1use crate::{
   2    rpc::{CLEANUP_TIMEOUT, RECONNECT_TIMEOUT},
   3    tests::{
   4        channel_id, following_tests::join_channel, room_participants, rust_lang, RoomParticipants,
   5        TestClient, TestServer,
   6    },
   7};
   8use anyhow::{anyhow, Result};
   9use assistant_context_editor::ContextStore;
  10use assistant_slash_command::SlashCommandWorkingSet;
  11use buffer_diff::{assert_hunks, DiffHunkSecondaryStatus, DiffHunkStatus};
  12use call::{room, ActiveCall, ParticipantLocation, Room};
  13use client::{User, RECEIVE_TIMEOUT};
  14use collections::{HashMap, HashSet};
  15use fs::{FakeFs, Fs as _, RemoveOptions};
  16use futures::{channel::mpsc, StreamExt as _};
  17use git::status::{FileStatus, StatusCode, TrackedStatus, UnmergedStatus, UnmergedStatusCode};
  18use gpui::{
  19    px, size, App, BackgroundExecutor, Entity, Modifiers, MouseButton, MouseDownEvent,
  20    TestAppContext, UpdateGlobal,
  21};
  22use language::{
  23    language_settings::{
  24        AllLanguageSettings, Formatter, FormatterList, PrettierSettings, SelectedFormatter,
  25    },
  26    tree_sitter_rust, tree_sitter_typescript, Diagnostic, DiagnosticEntry, FakeLspAdapter,
  27    Language, LanguageConfig, LanguageMatcher, LineEnding, OffsetRangeExt, Point, Rope,
  28};
  29use lsp::LanguageServerId;
  30use parking_lot::Mutex;
  31use pretty_assertions::assert_eq;
  32use project::{
  33    lsp_store::{FormatTrigger, LspFormatTarget},
  34    search::{SearchQuery, SearchResult},
  35    DiagnosticSummary, HoverBlockKind, Project, ProjectPath,
  36};
  37use prompt_store::PromptBuilder;
  38use rand::prelude::*;
  39use serde_json::json;
  40use settings::SettingsStore;
  41use std::{
  42    cell::{Cell, RefCell},
  43    env, future, mem,
  44    path::{Path, PathBuf},
  45    rc::Rc,
  46    sync::{
  47        atomic::{AtomicBool, Ordering::SeqCst},
  48        Arc,
  49    },
  50    time::Duration,
  51};
  52use unindent::Unindent as _;
  53use workspace::Pane;
  54
  55#[ctor::ctor]
  56fn init_logger() {
  57    if std::env::var("RUST_LOG").is_ok() {
  58        env_logger::init();
  59    }
  60}
  61
  62#[gpui::test(iterations = 10)]
  63async fn test_basic_calls(
  64    executor: BackgroundExecutor,
  65    cx_a: &mut TestAppContext,
  66    cx_b: &mut TestAppContext,
  67    cx_b2: &mut TestAppContext,
  68    cx_c: &mut TestAppContext,
  69) {
  70    let mut server = TestServer::start(executor.clone()).await;
  71
  72    let client_a = server.create_client(cx_a, "user_a").await;
  73    let client_b = server.create_client(cx_b, "user_b").await;
  74    let client_c = server.create_client(cx_c, "user_c").await;
  75    server
  76        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
  77        .await;
  78
  79    let active_call_a = cx_a.read(ActiveCall::global);
  80    let active_call_b = cx_b.read(ActiveCall::global);
  81    let active_call_c = cx_c.read(ActiveCall::global);
  82
  83    // Call user B from client A.
  84    active_call_a
  85        .update(cx_a, |call, cx| {
  86            call.invite(client_b.user_id().unwrap(), None, cx)
  87        })
  88        .await
  89        .unwrap();
  90    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
  91    executor.run_until_parked();
  92    assert_eq!(
  93        room_participants(&room_a, cx_a),
  94        RoomParticipants {
  95            remote: Default::default(),
  96            pending: vec!["user_b".to_string()]
  97        }
  98    );
  99
 100    // User B receives the call.
 101
 102    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 103    let call_b = incoming_call_b.next().await.unwrap().unwrap();
 104    assert_eq!(call_b.calling_user.github_login, "user_a");
 105
 106    // User B connects via another client and also receives a ring on the newly-connected client.
 107    let _client_b2 = server.create_client(cx_b2, "user_b").await;
 108    let active_call_b2 = cx_b2.read(ActiveCall::global);
 109
 110    let mut incoming_call_b2 = active_call_b2.read_with(cx_b2, |call, _| call.incoming());
 111    executor.run_until_parked();
 112    let call_b2 = incoming_call_b2.next().await.unwrap().unwrap();
 113    assert_eq!(call_b2.calling_user.github_login, "user_a");
 114
 115    // User B joins the room using the first client.
 116    active_call_b
 117        .update(cx_b, |call, cx| call.accept_incoming(cx))
 118        .await
 119        .unwrap();
 120
 121    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 122    assert!(incoming_call_b.next().await.unwrap().is_none());
 123
 124    executor.run_until_parked();
 125    assert_eq!(
 126        room_participants(&room_a, cx_a),
 127        RoomParticipants {
 128            remote: vec!["user_b".to_string()],
 129            pending: Default::default()
 130        }
 131    );
 132    assert_eq!(
 133        room_participants(&room_b, cx_b),
 134        RoomParticipants {
 135            remote: vec!["user_a".to_string()],
 136            pending: Default::default()
 137        }
 138    );
 139
 140    // Call user C from client B.
 141
 142    let mut incoming_call_c = active_call_c.read_with(cx_c, |call, _| call.incoming());
 143    active_call_b
 144        .update(cx_b, |call, cx| {
 145            call.invite(client_c.user_id().unwrap(), None, cx)
 146        })
 147        .await
 148        .unwrap();
 149
 150    executor.run_until_parked();
 151    assert_eq!(
 152        room_participants(&room_a, cx_a),
 153        RoomParticipants {
 154            remote: vec!["user_b".to_string()],
 155            pending: vec!["user_c".to_string()]
 156        }
 157    );
 158    assert_eq!(
 159        room_participants(&room_b, cx_b),
 160        RoomParticipants {
 161            remote: vec!["user_a".to_string()],
 162            pending: vec!["user_c".to_string()]
 163        }
 164    );
 165
 166    // User C receives the call, but declines it.
 167    let call_c = incoming_call_c.next().await.unwrap().unwrap();
 168    assert_eq!(call_c.calling_user.github_login, "user_b");
 169    active_call_c.update(cx_c, |call, cx| call.decline_incoming(cx).unwrap());
 170    assert!(incoming_call_c.next().await.unwrap().is_none());
 171
 172    executor.run_until_parked();
 173    assert_eq!(
 174        room_participants(&room_a, cx_a),
 175        RoomParticipants {
 176            remote: vec!["user_b".to_string()],
 177            pending: Default::default()
 178        }
 179    );
 180    assert_eq!(
 181        room_participants(&room_b, cx_b),
 182        RoomParticipants {
 183            remote: vec!["user_a".to_string()],
 184            pending: Default::default()
 185        }
 186    );
 187
 188    // Call user C again from user A.
 189    active_call_a
 190        .update(cx_a, |call, cx| {
 191            call.invite(client_c.user_id().unwrap(), None, cx)
 192        })
 193        .await
 194        .unwrap();
 195
 196    executor.run_until_parked();
 197    assert_eq!(
 198        room_participants(&room_a, cx_a),
 199        RoomParticipants {
 200            remote: vec!["user_b".to_string()],
 201            pending: vec!["user_c".to_string()]
 202        }
 203    );
 204    assert_eq!(
 205        room_participants(&room_b, cx_b),
 206        RoomParticipants {
 207            remote: vec!["user_a".to_string()],
 208            pending: vec!["user_c".to_string()]
 209        }
 210    );
 211
 212    // User C accepts the call.
 213    let call_c = incoming_call_c.next().await.unwrap().unwrap();
 214    assert_eq!(call_c.calling_user.github_login, "user_a");
 215    active_call_c
 216        .update(cx_c, |call, cx| call.accept_incoming(cx))
 217        .await
 218        .unwrap();
 219    assert!(incoming_call_c.next().await.unwrap().is_none());
 220
 221    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 222
 223    executor.run_until_parked();
 224    assert_eq!(
 225        room_participants(&room_a, cx_a),
 226        RoomParticipants {
 227            remote: vec!["user_b".to_string(), "user_c".to_string()],
 228            pending: Default::default()
 229        }
 230    );
 231    assert_eq!(
 232        room_participants(&room_b, cx_b),
 233        RoomParticipants {
 234            remote: vec!["user_a".to_string(), "user_c".to_string()],
 235            pending: Default::default()
 236        }
 237    );
 238    assert_eq!(
 239        room_participants(&room_c, cx_c),
 240        RoomParticipants {
 241            remote: vec!["user_a".to_string(), "user_b".to_string()],
 242            pending: Default::default()
 243        }
 244    );
 245
 246    // TODO: Re-enable this test once we can replace our swift Livekit SDK with the rust SDK
 247    #[cfg(not(target_os = "macos"))]
 248    {
 249        // User A shares their screen
 250        let display = gpui::TestScreenCaptureSource::new();
 251        let events_b = active_call_events(cx_b);
 252        let events_c = active_call_events(cx_c);
 253        cx_a.set_screen_capture_sources(vec![display]);
 254        active_call_a
 255            .update(cx_a, |call, cx| {
 256                call.room()
 257                    .unwrap()
 258                    .update(cx, |room, cx| room.share_screen(cx))
 259            })
 260            .await
 261            .unwrap();
 262
 263        executor.run_until_parked();
 264
 265        // User B observes the remote screen sharing track.
 266        assert_eq!(events_b.borrow().len(), 1);
 267        let event_b = events_b.borrow().first().unwrap().clone();
 268        if let call::room::Event::RemoteVideoTracksChanged { participant_id } = event_b {
 269            assert_eq!(participant_id, client_a.peer_id().unwrap());
 270
 271            room_b.read_with(cx_b, |room, _| {
 272                assert_eq!(
 273                    room.remote_participants()[&client_a.user_id().unwrap()]
 274                        .video_tracks
 275                        .len(),
 276                    1
 277                );
 278            });
 279        } else {
 280            panic!("unexpected event")
 281        }
 282
 283        // User C observes the remote screen sharing track.
 284        assert_eq!(events_c.borrow().len(), 1);
 285        let event_c = events_c.borrow().first().unwrap().clone();
 286        if let call::room::Event::RemoteVideoTracksChanged { participant_id } = event_c {
 287            assert_eq!(participant_id, client_a.peer_id().unwrap());
 288
 289            room_c.read_with(cx_c, |room, _| {
 290                assert_eq!(
 291                    room.remote_participants()[&client_a.user_id().unwrap()]
 292                        .video_tracks
 293                        .len(),
 294                    1
 295                );
 296            });
 297        } else {
 298            panic!("unexpected event")
 299        }
 300    }
 301
 302    // User A leaves the room.
 303    active_call_a
 304        .update(cx_a, |call, cx| {
 305            let hang_up = call.hang_up(cx);
 306            assert!(call.room().is_none());
 307            hang_up
 308        })
 309        .await
 310        .unwrap();
 311    executor.run_until_parked();
 312    assert_eq!(
 313        room_participants(&room_a, cx_a),
 314        RoomParticipants {
 315            remote: Default::default(),
 316            pending: Default::default()
 317        }
 318    );
 319    assert_eq!(
 320        room_participants(&room_b, cx_b),
 321        RoomParticipants {
 322            remote: vec!["user_c".to_string()],
 323            pending: Default::default()
 324        }
 325    );
 326    assert_eq!(
 327        room_participants(&room_c, cx_c),
 328        RoomParticipants {
 329            remote: vec!["user_b".to_string()],
 330            pending: Default::default()
 331        }
 332    );
 333
 334    // User B gets disconnected from the LiveKit server, which causes them
 335    // to automatically leave the room. User C leaves the room as well because
 336    // nobody else is in there.
 337    server
 338        .test_livekit_server
 339        .disconnect_client(client_b.user_id().unwrap().to_string())
 340        .await;
 341    executor.run_until_parked();
 342
 343    active_call_b.read_with(cx_b, |call, _| assert!(call.room().is_none()));
 344
 345    active_call_c.read_with(cx_c, |call, _| assert!(call.room().is_none()));
 346    assert_eq!(
 347        room_participants(&room_a, cx_a),
 348        RoomParticipants {
 349            remote: Default::default(),
 350            pending: Default::default()
 351        }
 352    );
 353    assert_eq!(
 354        room_participants(&room_b, cx_b),
 355        RoomParticipants {
 356            remote: Default::default(),
 357            pending: Default::default()
 358        }
 359    );
 360    assert_eq!(
 361        room_participants(&room_c, cx_c),
 362        RoomParticipants {
 363            remote: Default::default(),
 364            pending: Default::default()
 365        }
 366    );
 367}
 368
 369#[gpui::test(iterations = 10)]
 370async fn test_calling_multiple_users_simultaneously(
 371    executor: BackgroundExecutor,
 372    cx_a: &mut TestAppContext,
 373    cx_b: &mut TestAppContext,
 374    cx_c: &mut TestAppContext,
 375    cx_d: &mut TestAppContext,
 376) {
 377    let mut server = TestServer::start(executor.clone()).await;
 378
 379    let client_a = server.create_client(cx_a, "user_a").await;
 380    let client_b = server.create_client(cx_b, "user_b").await;
 381    let client_c = server.create_client(cx_c, "user_c").await;
 382    let client_d = server.create_client(cx_d, "user_d").await;
 383    server
 384        .make_contacts(&mut [
 385            (&client_a, cx_a),
 386            (&client_b, cx_b),
 387            (&client_c, cx_c),
 388            (&client_d, cx_d),
 389        ])
 390        .await;
 391
 392    let active_call_a = cx_a.read(ActiveCall::global);
 393    let active_call_b = cx_b.read(ActiveCall::global);
 394    let active_call_c = cx_c.read(ActiveCall::global);
 395    let active_call_d = cx_d.read(ActiveCall::global);
 396
 397    // Simultaneously call user B and user C from client A.
 398    let b_invite = active_call_a.update(cx_a, |call, cx| {
 399        call.invite(client_b.user_id().unwrap(), None, cx)
 400    });
 401    let c_invite = active_call_a.update(cx_a, |call, cx| {
 402        call.invite(client_c.user_id().unwrap(), None, cx)
 403    });
 404    b_invite.await.unwrap();
 405    c_invite.await.unwrap();
 406
 407    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 408    executor.run_until_parked();
 409    assert_eq!(
 410        room_participants(&room_a, cx_a),
 411        RoomParticipants {
 412            remote: Default::default(),
 413            pending: vec!["user_b".to_string(), "user_c".to_string()]
 414        }
 415    );
 416
 417    // Call client D from client A.
 418    active_call_a
 419        .update(cx_a, |call, cx| {
 420            call.invite(client_d.user_id().unwrap(), None, cx)
 421        })
 422        .await
 423        .unwrap();
 424    executor.run_until_parked();
 425    assert_eq!(
 426        room_participants(&room_a, cx_a),
 427        RoomParticipants {
 428            remote: Default::default(),
 429            pending: vec![
 430                "user_b".to_string(),
 431                "user_c".to_string(),
 432                "user_d".to_string()
 433            ]
 434        }
 435    );
 436
 437    // Accept the call on all clients simultaneously.
 438    let accept_b = active_call_b.update(cx_b, |call, cx| call.accept_incoming(cx));
 439    let accept_c = active_call_c.update(cx_c, |call, cx| call.accept_incoming(cx));
 440    let accept_d = active_call_d.update(cx_d, |call, cx| call.accept_incoming(cx));
 441    accept_b.await.unwrap();
 442    accept_c.await.unwrap();
 443    accept_d.await.unwrap();
 444
 445    executor.run_until_parked();
 446
 447    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 448
 449    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 450
 451    let room_d = active_call_d.read_with(cx_d, |call, _| call.room().unwrap().clone());
 452    assert_eq!(
 453        room_participants(&room_a, cx_a),
 454        RoomParticipants {
 455            remote: vec![
 456                "user_b".to_string(),
 457                "user_c".to_string(),
 458                "user_d".to_string(),
 459            ],
 460            pending: Default::default()
 461        }
 462    );
 463    assert_eq!(
 464        room_participants(&room_b, cx_b),
 465        RoomParticipants {
 466            remote: vec![
 467                "user_a".to_string(),
 468                "user_c".to_string(),
 469                "user_d".to_string(),
 470            ],
 471            pending: Default::default()
 472        }
 473    );
 474    assert_eq!(
 475        room_participants(&room_c, cx_c),
 476        RoomParticipants {
 477            remote: vec![
 478                "user_a".to_string(),
 479                "user_b".to_string(),
 480                "user_d".to_string(),
 481            ],
 482            pending: Default::default()
 483        }
 484    );
 485    assert_eq!(
 486        room_participants(&room_d, cx_d),
 487        RoomParticipants {
 488            remote: vec![
 489                "user_a".to_string(),
 490                "user_b".to_string(),
 491                "user_c".to_string(),
 492            ],
 493            pending: Default::default()
 494        }
 495    );
 496}
 497
 498#[gpui::test(iterations = 10)]
 499async fn test_joining_channels_and_calling_multiple_users_simultaneously(
 500    executor: BackgroundExecutor,
 501    cx_a: &mut TestAppContext,
 502    cx_b: &mut TestAppContext,
 503    cx_c: &mut TestAppContext,
 504) {
 505    let mut server = TestServer::start(executor.clone()).await;
 506
 507    let client_a = server.create_client(cx_a, "user_a").await;
 508    let client_b = server.create_client(cx_b, "user_b").await;
 509    let client_c = server.create_client(cx_c, "user_c").await;
 510    server
 511        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
 512        .await;
 513
 514    let channel_1 = server
 515        .make_channel(
 516            "channel1",
 517            None,
 518            (&client_a, cx_a),
 519            &mut [(&client_b, cx_b), (&client_c, cx_c)],
 520        )
 521        .await;
 522
 523    let channel_2 = server
 524        .make_channel(
 525            "channel2",
 526            None,
 527            (&client_a, cx_a),
 528            &mut [(&client_b, cx_b), (&client_c, cx_c)],
 529        )
 530        .await;
 531
 532    let active_call_a = cx_a.read(ActiveCall::global);
 533
 534    // Simultaneously join channel 1 and then channel 2
 535    active_call_a
 536        .update(cx_a, |call, cx| call.join_channel(channel_1, cx))
 537        .detach();
 538    let join_channel_2 = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_2, cx));
 539
 540    join_channel_2.await.unwrap();
 541
 542    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 543    executor.run_until_parked();
 544
 545    assert_eq!(channel_id(&room_a, cx_a), Some(channel_2));
 546
 547    // Leave the room
 548    active_call_a
 549        .update(cx_a, |call, cx| call.hang_up(cx))
 550        .await
 551        .unwrap();
 552
 553    // Initiating invites and then joining a channel should fail gracefully
 554    let b_invite = active_call_a.update(cx_a, |call, cx| {
 555        call.invite(client_b.user_id().unwrap(), None, cx)
 556    });
 557    let c_invite = active_call_a.update(cx_a, |call, cx| {
 558        call.invite(client_c.user_id().unwrap(), None, cx)
 559    });
 560
 561    let join_channel = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_1, cx));
 562
 563    b_invite.await.unwrap();
 564    c_invite.await.unwrap();
 565    join_channel.await.unwrap();
 566
 567    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 568    executor.run_until_parked();
 569
 570    assert_eq!(
 571        room_participants(&room_a, cx_a),
 572        RoomParticipants {
 573            remote: Default::default(),
 574            pending: vec!["user_b".to_string(), "user_c".to_string()]
 575        }
 576    );
 577
 578    assert_eq!(channel_id(&room_a, cx_a), None);
 579
 580    // Leave the room
 581    active_call_a
 582        .update(cx_a, |call, cx| call.hang_up(cx))
 583        .await
 584        .unwrap();
 585
 586    // Simultaneously join channel 1 and call user B and user C from client A.
 587    let join_channel = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_1, cx));
 588
 589    let b_invite = active_call_a.update(cx_a, |call, cx| {
 590        call.invite(client_b.user_id().unwrap(), None, cx)
 591    });
 592    let c_invite = active_call_a.update(cx_a, |call, cx| {
 593        call.invite(client_c.user_id().unwrap(), None, cx)
 594    });
 595
 596    join_channel.await.unwrap();
 597    b_invite.await.unwrap();
 598    c_invite.await.unwrap();
 599
 600    active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 601    executor.run_until_parked();
 602}
 603
 604#[gpui::test(iterations = 10)]
 605async fn test_room_uniqueness(
 606    executor: BackgroundExecutor,
 607    cx_a: &mut TestAppContext,
 608    cx_a2: &mut TestAppContext,
 609    cx_b: &mut TestAppContext,
 610    cx_b2: &mut TestAppContext,
 611    cx_c: &mut TestAppContext,
 612) {
 613    let mut server = TestServer::start(executor.clone()).await;
 614    let client_a = server.create_client(cx_a, "user_a").await;
 615    let _client_a2 = server.create_client(cx_a2, "user_a").await;
 616    let client_b = server.create_client(cx_b, "user_b").await;
 617    let _client_b2 = server.create_client(cx_b2, "user_b").await;
 618    let client_c = server.create_client(cx_c, "user_c").await;
 619    server
 620        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
 621        .await;
 622
 623    let active_call_a = cx_a.read(ActiveCall::global);
 624    let active_call_a2 = cx_a2.read(ActiveCall::global);
 625    let active_call_b = cx_b.read(ActiveCall::global);
 626    let active_call_b2 = cx_b2.read(ActiveCall::global);
 627    let active_call_c = cx_c.read(ActiveCall::global);
 628
 629    // Call user B from client A.
 630    active_call_a
 631        .update(cx_a, |call, cx| {
 632            call.invite(client_b.user_id().unwrap(), None, cx)
 633        })
 634        .await
 635        .unwrap();
 636
 637    // Ensure a new room can't be created given user A just created one.
 638    active_call_a2
 639        .update(cx_a2, |call, cx| {
 640            call.invite(client_c.user_id().unwrap(), None, cx)
 641        })
 642        .await
 643        .unwrap_err();
 644
 645    active_call_a2.read_with(cx_a2, |call, _| assert!(call.room().is_none()));
 646
 647    // User B receives the call from user A.
 648
 649    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 650    let call_b1 = incoming_call_b.next().await.unwrap().unwrap();
 651    assert_eq!(call_b1.calling_user.github_login, "user_a");
 652
 653    // Ensure calling users A and B from client C fails.
 654    active_call_c
 655        .update(cx_c, |call, cx| {
 656            call.invite(client_a.user_id().unwrap(), None, cx)
 657        })
 658        .await
 659        .unwrap_err();
 660    active_call_c
 661        .update(cx_c, |call, cx| {
 662            call.invite(client_b.user_id().unwrap(), None, cx)
 663        })
 664        .await
 665        .unwrap_err();
 666
 667    // Ensure User B can't create a room while they still have an incoming call.
 668    active_call_b2
 669        .update(cx_b2, |call, cx| {
 670            call.invite(client_c.user_id().unwrap(), None, cx)
 671        })
 672        .await
 673        .unwrap_err();
 674
 675    active_call_b2.read_with(cx_b2, |call, _| assert!(call.room().is_none()));
 676
 677    // User B joins the room and calling them after they've joined still fails.
 678    active_call_b
 679        .update(cx_b, |call, cx| call.accept_incoming(cx))
 680        .await
 681        .unwrap();
 682    active_call_c
 683        .update(cx_c, |call, cx| {
 684            call.invite(client_b.user_id().unwrap(), None, cx)
 685        })
 686        .await
 687        .unwrap_err();
 688
 689    // Ensure User B can't create a room while they belong to another room.
 690    active_call_b2
 691        .update(cx_b2, |call, cx| {
 692            call.invite(client_c.user_id().unwrap(), None, cx)
 693        })
 694        .await
 695        .unwrap_err();
 696
 697    active_call_b2.read_with(cx_b2, |call, _| assert!(call.room().is_none()));
 698
 699    // Client C can successfully call client B after client B leaves the room.
 700    active_call_b
 701        .update(cx_b, |call, cx| call.hang_up(cx))
 702        .await
 703        .unwrap();
 704    executor.run_until_parked();
 705    active_call_c
 706        .update(cx_c, |call, cx| {
 707            call.invite(client_b.user_id().unwrap(), None, cx)
 708        })
 709        .await
 710        .unwrap();
 711    executor.run_until_parked();
 712    let call_b2 = incoming_call_b.next().await.unwrap().unwrap();
 713    assert_eq!(call_b2.calling_user.github_login, "user_c");
 714}
 715
 716#[gpui::test(iterations = 10)]
 717async fn test_client_disconnecting_from_room(
 718    executor: BackgroundExecutor,
 719    cx_a: &mut TestAppContext,
 720    cx_b: &mut TestAppContext,
 721) {
 722    let mut server = TestServer::start(executor.clone()).await;
 723    let client_a = server.create_client(cx_a, "user_a").await;
 724    let client_b = server.create_client(cx_b, "user_b").await;
 725    server
 726        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
 727        .await;
 728
 729    let active_call_a = cx_a.read(ActiveCall::global);
 730    let active_call_b = cx_b.read(ActiveCall::global);
 731
 732    // Call user B from client A.
 733    active_call_a
 734        .update(cx_a, |call, cx| {
 735            call.invite(client_b.user_id().unwrap(), None, cx)
 736        })
 737        .await
 738        .unwrap();
 739
 740    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 741
 742    // User B receives the call and joins the room.
 743
 744    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 745    incoming_call_b.next().await.unwrap().unwrap();
 746    active_call_b
 747        .update(cx_b, |call, cx| call.accept_incoming(cx))
 748        .await
 749        .unwrap();
 750
 751    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 752    executor.run_until_parked();
 753    assert_eq!(
 754        room_participants(&room_a, cx_a),
 755        RoomParticipants {
 756            remote: vec!["user_b".to_string()],
 757            pending: Default::default()
 758        }
 759    );
 760    assert_eq!(
 761        room_participants(&room_b, cx_b),
 762        RoomParticipants {
 763            remote: vec!["user_a".to_string()],
 764            pending: Default::default()
 765        }
 766    );
 767
 768    // User A automatically reconnects to the room upon disconnection.
 769    server.disconnect_client(client_a.peer_id().unwrap());
 770    executor.advance_clock(RECEIVE_TIMEOUT);
 771    executor.run_until_parked();
 772    assert_eq!(
 773        room_participants(&room_a, cx_a),
 774        RoomParticipants {
 775            remote: vec!["user_b".to_string()],
 776            pending: Default::default()
 777        }
 778    );
 779    assert_eq!(
 780        room_participants(&room_b, cx_b),
 781        RoomParticipants {
 782            remote: vec!["user_a".to_string()],
 783            pending: Default::default()
 784        }
 785    );
 786
 787    // When user A disconnects, both client A and B clear their room on the active call.
 788    server.forbid_connections();
 789    server.disconnect_client(client_a.peer_id().unwrap());
 790    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
 791
 792    active_call_a.read_with(cx_a, |call, _| assert!(call.room().is_none()));
 793
 794    active_call_b.read_with(cx_b, |call, _| assert!(call.room().is_none()));
 795    assert_eq!(
 796        room_participants(&room_a, cx_a),
 797        RoomParticipants {
 798            remote: Default::default(),
 799            pending: Default::default()
 800        }
 801    );
 802    assert_eq!(
 803        room_participants(&room_b, cx_b),
 804        RoomParticipants {
 805            remote: Default::default(),
 806            pending: Default::default()
 807        }
 808    );
 809
 810    // Allow user A to reconnect to the server.
 811    server.allow_connections();
 812    executor.advance_clock(RECEIVE_TIMEOUT);
 813
 814    // Call user B again from client A.
 815    active_call_a
 816        .update(cx_a, |call, cx| {
 817            call.invite(client_b.user_id().unwrap(), None, cx)
 818        })
 819        .await
 820        .unwrap();
 821
 822    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 823
 824    // User B receives the call and joins the room.
 825
 826    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 827    incoming_call_b.next().await.unwrap().unwrap();
 828    active_call_b
 829        .update(cx_b, |call, cx| call.accept_incoming(cx))
 830        .await
 831        .unwrap();
 832
 833    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 834    executor.run_until_parked();
 835    assert_eq!(
 836        room_participants(&room_a, cx_a),
 837        RoomParticipants {
 838            remote: vec!["user_b".to_string()],
 839            pending: Default::default()
 840        }
 841    );
 842    assert_eq!(
 843        room_participants(&room_b, cx_b),
 844        RoomParticipants {
 845            remote: vec!["user_a".to_string()],
 846            pending: Default::default()
 847        }
 848    );
 849
 850    // User B gets disconnected from the LiveKit server, which causes it
 851    // to automatically leave the room.
 852    server
 853        .test_livekit_server
 854        .disconnect_client(client_b.user_id().unwrap().to_string())
 855        .await;
 856    executor.run_until_parked();
 857    active_call_a.update(cx_a, |call, _| assert!(call.room().is_none()));
 858    active_call_b.update(cx_b, |call, _| assert!(call.room().is_none()));
 859    assert_eq!(
 860        room_participants(&room_a, cx_a),
 861        RoomParticipants {
 862            remote: Default::default(),
 863            pending: Default::default()
 864        }
 865    );
 866    assert_eq!(
 867        room_participants(&room_b, cx_b),
 868        RoomParticipants {
 869            remote: Default::default(),
 870            pending: Default::default()
 871        }
 872    );
 873}
 874
 875#[gpui::test(iterations = 10)]
 876async fn test_server_restarts(
 877    executor: BackgroundExecutor,
 878    cx_a: &mut TestAppContext,
 879    cx_b: &mut TestAppContext,
 880    cx_c: &mut TestAppContext,
 881    cx_d: &mut TestAppContext,
 882) {
 883    let mut server = TestServer::start(executor.clone()).await;
 884    let client_a = server.create_client(cx_a, "user_a").await;
 885    client_a
 886        .fs()
 887        .insert_tree("/a", json!({ "a.txt": "a-contents" }))
 888        .await;
 889
 890    // Invite client B to collaborate on a project
 891    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
 892
 893    let client_b = server.create_client(cx_b, "user_b").await;
 894    let client_c = server.create_client(cx_c, "user_c").await;
 895    let client_d = server.create_client(cx_d, "user_d").await;
 896    server
 897        .make_contacts(&mut [
 898            (&client_a, cx_a),
 899            (&client_b, cx_b),
 900            (&client_c, cx_c),
 901            (&client_d, cx_d),
 902        ])
 903        .await;
 904
 905    let active_call_a = cx_a.read(ActiveCall::global);
 906    let active_call_b = cx_b.read(ActiveCall::global);
 907    let active_call_c = cx_c.read(ActiveCall::global);
 908    let active_call_d = cx_d.read(ActiveCall::global);
 909
 910    // User A calls users B, C, and D.
 911    active_call_a
 912        .update(cx_a, |call, cx| {
 913            call.invite(client_b.user_id().unwrap(), Some(project_a.clone()), cx)
 914        })
 915        .await
 916        .unwrap();
 917    active_call_a
 918        .update(cx_a, |call, cx| {
 919            call.invite(client_c.user_id().unwrap(), Some(project_a.clone()), cx)
 920        })
 921        .await
 922        .unwrap();
 923    active_call_a
 924        .update(cx_a, |call, cx| {
 925            call.invite(client_d.user_id().unwrap(), Some(project_a.clone()), cx)
 926        })
 927        .await
 928        .unwrap();
 929
 930    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 931
 932    // User B receives the call and joins the room.
 933
 934    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 935    assert!(incoming_call_b.next().await.unwrap().is_some());
 936    active_call_b
 937        .update(cx_b, |call, cx| call.accept_incoming(cx))
 938        .await
 939        .unwrap();
 940
 941    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 942
 943    // User C receives the call and joins the room.
 944
 945    let mut incoming_call_c = active_call_c.read_with(cx_c, |call, _| call.incoming());
 946    assert!(incoming_call_c.next().await.unwrap().is_some());
 947    active_call_c
 948        .update(cx_c, |call, cx| call.accept_incoming(cx))
 949        .await
 950        .unwrap();
 951
 952    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 953
 954    // User D receives the call but doesn't join the room yet.
 955
 956    let mut incoming_call_d = active_call_d.read_with(cx_d, |call, _| call.incoming());
 957    assert!(incoming_call_d.next().await.unwrap().is_some());
 958
 959    executor.run_until_parked();
 960    assert_eq!(
 961        room_participants(&room_a, cx_a),
 962        RoomParticipants {
 963            remote: vec!["user_b".to_string(), "user_c".to_string()],
 964            pending: vec!["user_d".to_string()]
 965        }
 966    );
 967    assert_eq!(
 968        room_participants(&room_b, cx_b),
 969        RoomParticipants {
 970            remote: vec!["user_a".to_string(), "user_c".to_string()],
 971            pending: vec!["user_d".to_string()]
 972        }
 973    );
 974    assert_eq!(
 975        room_participants(&room_c, cx_c),
 976        RoomParticipants {
 977            remote: vec!["user_a".to_string(), "user_b".to_string()],
 978            pending: vec!["user_d".to_string()]
 979        }
 980    );
 981
 982    // The server is torn down.
 983    server.reset().await;
 984
 985    // Users A and B reconnect to the call. User C has troubles reconnecting, so it leaves the room.
 986    client_c.override_establish_connection(|_, cx| cx.spawn(async |_| future::pending().await));
 987    executor.advance_clock(RECONNECT_TIMEOUT);
 988    assert_eq!(
 989        room_participants(&room_a, cx_a),
 990        RoomParticipants {
 991            remote: vec!["user_b".to_string(), "user_c".to_string()],
 992            pending: vec!["user_d".to_string()]
 993        }
 994    );
 995    assert_eq!(
 996        room_participants(&room_b, cx_b),
 997        RoomParticipants {
 998            remote: vec!["user_a".to_string(), "user_c".to_string()],
 999            pending: vec!["user_d".to_string()]
1000        }
1001    );
1002    assert_eq!(
1003        room_participants(&room_c, cx_c),
1004        RoomParticipants {
1005            remote: vec![],
1006            pending: vec![]
1007        }
1008    );
1009
1010    // User D is notified again of the incoming call and accepts it.
1011    assert!(incoming_call_d.next().await.unwrap().is_some());
1012    active_call_d
1013        .update(cx_d, |call, cx| call.accept_incoming(cx))
1014        .await
1015        .unwrap();
1016    executor.run_until_parked();
1017
1018    let room_d = active_call_d.read_with(cx_d, |call, _| call.room().unwrap().clone());
1019    assert_eq!(
1020        room_participants(&room_a, cx_a),
1021        RoomParticipants {
1022            remote: vec![
1023                "user_b".to_string(),
1024                "user_c".to_string(),
1025                "user_d".to_string(),
1026            ],
1027            pending: vec![]
1028        }
1029    );
1030    assert_eq!(
1031        room_participants(&room_b, cx_b),
1032        RoomParticipants {
1033            remote: vec![
1034                "user_a".to_string(),
1035                "user_c".to_string(),
1036                "user_d".to_string(),
1037            ],
1038            pending: vec![]
1039        }
1040    );
1041    assert_eq!(
1042        room_participants(&room_c, cx_c),
1043        RoomParticipants {
1044            remote: vec![],
1045            pending: vec![]
1046        }
1047    );
1048    assert_eq!(
1049        room_participants(&room_d, cx_d),
1050        RoomParticipants {
1051            remote: vec![
1052                "user_a".to_string(),
1053                "user_b".to_string(),
1054                "user_c".to_string(),
1055            ],
1056            pending: vec![]
1057        }
1058    );
1059
1060    // The server finishes restarting, cleaning up stale connections.
1061    server.start().await.unwrap();
1062    executor.advance_clock(CLEANUP_TIMEOUT);
1063    assert_eq!(
1064        room_participants(&room_a, cx_a),
1065        RoomParticipants {
1066            remote: vec!["user_b".to_string(), "user_d".to_string()],
1067            pending: vec![]
1068        }
1069    );
1070    assert_eq!(
1071        room_participants(&room_b, cx_b),
1072        RoomParticipants {
1073            remote: vec!["user_a".to_string(), "user_d".to_string()],
1074            pending: vec![]
1075        }
1076    );
1077    assert_eq!(
1078        room_participants(&room_c, cx_c),
1079        RoomParticipants {
1080            remote: vec![],
1081            pending: vec![]
1082        }
1083    );
1084    assert_eq!(
1085        room_participants(&room_d, cx_d),
1086        RoomParticipants {
1087            remote: vec!["user_a".to_string(), "user_b".to_string()],
1088            pending: vec![]
1089        }
1090    );
1091
1092    // User D hangs up.
1093    active_call_d
1094        .update(cx_d, |call, cx| call.hang_up(cx))
1095        .await
1096        .unwrap();
1097    executor.run_until_parked();
1098    assert_eq!(
1099        room_participants(&room_a, cx_a),
1100        RoomParticipants {
1101            remote: vec!["user_b".to_string()],
1102            pending: vec![]
1103        }
1104    );
1105    assert_eq!(
1106        room_participants(&room_b, cx_b),
1107        RoomParticipants {
1108            remote: vec!["user_a".to_string()],
1109            pending: vec![]
1110        }
1111    );
1112    assert_eq!(
1113        room_participants(&room_c, cx_c),
1114        RoomParticipants {
1115            remote: vec![],
1116            pending: vec![]
1117        }
1118    );
1119    assert_eq!(
1120        room_participants(&room_d, cx_d),
1121        RoomParticipants {
1122            remote: vec![],
1123            pending: vec![]
1124        }
1125    );
1126
1127    // User B calls user D again.
1128    active_call_b
1129        .update(cx_b, |call, cx| {
1130            call.invite(client_d.user_id().unwrap(), None, cx)
1131        })
1132        .await
1133        .unwrap();
1134
1135    // User D receives the call but doesn't join the room yet.
1136
1137    let mut incoming_call_d = active_call_d.read_with(cx_d, |call, _| call.incoming());
1138    assert!(incoming_call_d.next().await.unwrap().is_some());
1139    executor.run_until_parked();
1140    assert_eq!(
1141        room_participants(&room_a, cx_a),
1142        RoomParticipants {
1143            remote: vec!["user_b".to_string()],
1144            pending: vec!["user_d".to_string()]
1145        }
1146    );
1147    assert_eq!(
1148        room_participants(&room_b, cx_b),
1149        RoomParticipants {
1150            remote: vec!["user_a".to_string()],
1151            pending: vec!["user_d".to_string()]
1152        }
1153    );
1154
1155    // The server is torn down.
1156    server.reset().await;
1157
1158    // Users A and B have troubles reconnecting, so they leave the room.
1159    client_a.override_establish_connection(|_, cx| cx.spawn(async |_| future::pending().await));
1160    client_b.override_establish_connection(|_, cx| cx.spawn(async |_| future::pending().await));
1161    client_c.override_establish_connection(|_, cx| cx.spawn(async |_| future::pending().await));
1162    executor.advance_clock(RECONNECT_TIMEOUT);
1163    assert_eq!(
1164        room_participants(&room_a, cx_a),
1165        RoomParticipants {
1166            remote: vec![],
1167            pending: vec![]
1168        }
1169    );
1170    assert_eq!(
1171        room_participants(&room_b, cx_b),
1172        RoomParticipants {
1173            remote: vec![],
1174            pending: vec![]
1175        }
1176    );
1177
1178    // User D is notified again of the incoming call but doesn't accept it.
1179    assert!(incoming_call_d.next().await.unwrap().is_some());
1180
1181    // The server finishes restarting, cleaning up stale connections and canceling the
1182    // call to user D because the room has become empty.
1183    server.start().await.unwrap();
1184    executor.advance_clock(CLEANUP_TIMEOUT);
1185    assert!(incoming_call_d.next().await.unwrap().is_none());
1186}
1187
1188#[gpui::test(iterations = 10)]
1189async fn test_calls_on_multiple_connections(
1190    executor: BackgroundExecutor,
1191    cx_a: &mut TestAppContext,
1192    cx_b1: &mut TestAppContext,
1193    cx_b2: &mut TestAppContext,
1194) {
1195    let mut server = TestServer::start(executor.clone()).await;
1196    let client_a = server.create_client(cx_a, "user_a").await;
1197    let client_b1 = server.create_client(cx_b1, "user_b").await;
1198    let client_b2 = server.create_client(cx_b2, "user_b").await;
1199    server
1200        .make_contacts(&mut [(&client_a, cx_a), (&client_b1, cx_b1)])
1201        .await;
1202
1203    let active_call_a = cx_a.read(ActiveCall::global);
1204    let active_call_b1 = cx_b1.read(ActiveCall::global);
1205    let active_call_b2 = cx_b2.read(ActiveCall::global);
1206
1207    let mut incoming_call_b1 = active_call_b1.read_with(cx_b1, |call, _| call.incoming());
1208
1209    let mut incoming_call_b2 = active_call_b2.read_with(cx_b2, |call, _| call.incoming());
1210    assert!(incoming_call_b1.next().await.unwrap().is_none());
1211    assert!(incoming_call_b2.next().await.unwrap().is_none());
1212
1213    // Call user B from client A, ensuring both clients for user B ring.
1214    active_call_a
1215        .update(cx_a, |call, cx| {
1216            call.invite(client_b1.user_id().unwrap(), None, cx)
1217        })
1218        .await
1219        .unwrap();
1220    executor.run_until_parked();
1221    assert!(incoming_call_b1.next().await.unwrap().is_some());
1222    assert!(incoming_call_b2.next().await.unwrap().is_some());
1223
1224    // User B declines the call on one of the two connections, causing both connections
1225    // to stop ringing.
1226    active_call_b2.update(cx_b2, |call, cx| call.decline_incoming(cx).unwrap());
1227    executor.run_until_parked();
1228    assert!(incoming_call_b1.next().await.unwrap().is_none());
1229    assert!(incoming_call_b2.next().await.unwrap().is_none());
1230
1231    // Call user B again from client A.
1232    active_call_a
1233        .update(cx_a, |call, cx| {
1234            call.invite(client_b1.user_id().unwrap(), None, cx)
1235        })
1236        .await
1237        .unwrap();
1238    executor.run_until_parked();
1239    assert!(incoming_call_b1.next().await.unwrap().is_some());
1240    assert!(incoming_call_b2.next().await.unwrap().is_some());
1241
1242    // User B accepts the call on one of the two connections, causing both connections
1243    // to stop ringing.
1244    active_call_b2
1245        .update(cx_b2, |call, cx| call.accept_incoming(cx))
1246        .await
1247        .unwrap();
1248    executor.run_until_parked();
1249    assert!(incoming_call_b1.next().await.unwrap().is_none());
1250    assert!(incoming_call_b2.next().await.unwrap().is_none());
1251
1252    // User B disconnects the client that is not on the call. Everything should be fine.
1253    client_b1.disconnect(&cx_b1.to_async());
1254    executor.advance_clock(RECEIVE_TIMEOUT);
1255    client_b1
1256        .authenticate_and_connect(false, &cx_b1.to_async())
1257        .await
1258        .unwrap();
1259
1260    // User B hangs up, and user A calls them again.
1261    active_call_b2
1262        .update(cx_b2, |call, cx| call.hang_up(cx))
1263        .await
1264        .unwrap();
1265    executor.run_until_parked();
1266    active_call_a
1267        .update(cx_a, |call, cx| {
1268            call.invite(client_b1.user_id().unwrap(), None, cx)
1269        })
1270        .await
1271        .unwrap();
1272    executor.run_until_parked();
1273    assert!(incoming_call_b1.next().await.unwrap().is_some());
1274    assert!(incoming_call_b2.next().await.unwrap().is_some());
1275
1276    // User A cancels the call, causing both connections to stop ringing.
1277    active_call_a
1278        .update(cx_a, |call, cx| {
1279            call.cancel_invite(client_b1.user_id().unwrap(), cx)
1280        })
1281        .await
1282        .unwrap();
1283    executor.run_until_parked();
1284    assert!(incoming_call_b1.next().await.unwrap().is_none());
1285    assert!(incoming_call_b2.next().await.unwrap().is_none());
1286
1287    // User A calls user B again.
1288    active_call_a
1289        .update(cx_a, |call, cx| {
1290            call.invite(client_b1.user_id().unwrap(), None, cx)
1291        })
1292        .await
1293        .unwrap();
1294    executor.run_until_parked();
1295    assert!(incoming_call_b1.next().await.unwrap().is_some());
1296    assert!(incoming_call_b2.next().await.unwrap().is_some());
1297
1298    // User A hangs up, causing both connections to stop ringing.
1299    active_call_a
1300        .update(cx_a, |call, cx| call.hang_up(cx))
1301        .await
1302        .unwrap();
1303    executor.run_until_parked();
1304    assert!(incoming_call_b1.next().await.unwrap().is_none());
1305    assert!(incoming_call_b2.next().await.unwrap().is_none());
1306
1307    // User A calls user B again.
1308    active_call_a
1309        .update(cx_a, |call, cx| {
1310            call.invite(client_b1.user_id().unwrap(), None, cx)
1311        })
1312        .await
1313        .unwrap();
1314    executor.run_until_parked();
1315    assert!(incoming_call_b1.next().await.unwrap().is_some());
1316    assert!(incoming_call_b2.next().await.unwrap().is_some());
1317
1318    // User A disconnects, causing both connections to stop ringing.
1319    server.forbid_connections();
1320    server.disconnect_client(client_a.peer_id().unwrap());
1321    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
1322    assert!(incoming_call_b1.next().await.unwrap().is_none());
1323    assert!(incoming_call_b2.next().await.unwrap().is_none());
1324
1325    // User A reconnects automatically, then calls user B again.
1326    server.allow_connections();
1327    executor.advance_clock(RECEIVE_TIMEOUT);
1328    active_call_a
1329        .update(cx_a, |call, cx| {
1330            call.invite(client_b1.user_id().unwrap(), None, cx)
1331        })
1332        .await
1333        .unwrap();
1334    executor.run_until_parked();
1335    assert!(incoming_call_b1.next().await.unwrap().is_some());
1336    assert!(incoming_call_b2.next().await.unwrap().is_some());
1337
1338    // User B disconnects all clients, causing user A to no longer see a pending call for them.
1339    server.forbid_connections();
1340    server.disconnect_client(client_b1.peer_id().unwrap());
1341    server.disconnect_client(client_b2.peer_id().unwrap());
1342    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
1343
1344    active_call_a.read_with(cx_a, |call, _| assert!(call.room().is_none()));
1345}
1346
1347#[gpui::test(iterations = 10)]
1348async fn test_unshare_project(
1349    executor: BackgroundExecutor,
1350    cx_a: &mut TestAppContext,
1351    cx_b: &mut TestAppContext,
1352    cx_c: &mut TestAppContext,
1353) {
1354    let mut server = TestServer::start(executor.clone()).await;
1355    let client_a = server.create_client(cx_a, "user_a").await;
1356    let client_b = server.create_client(cx_b, "user_b").await;
1357    let client_c = server.create_client(cx_c, "user_c").await;
1358    server
1359        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
1360        .await;
1361
1362    let active_call_a = cx_a.read(ActiveCall::global);
1363    let active_call_b = cx_b.read(ActiveCall::global);
1364
1365    client_a
1366        .fs()
1367        .insert_tree(
1368            "/a",
1369            json!({
1370                "a.txt": "a-contents",
1371                "b.txt": "b-contents",
1372            }),
1373        )
1374        .await;
1375
1376    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
1377    let project_id = active_call_a
1378        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1379        .await
1380        .unwrap();
1381
1382    let worktree_a = project_a.read_with(cx_a, |project, cx| project.worktrees(cx).next().unwrap());
1383    let project_b = client_b.join_remote_project(project_id, cx_b).await;
1384    executor.run_until_parked();
1385
1386    assert!(worktree_a.read_with(cx_a, |tree, _| tree.has_update_observer()));
1387
1388    project_b
1389        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
1390        .await
1391        .unwrap();
1392
1393    // When client B leaves the room, the project becomes read-only.
1394    active_call_b
1395        .update(cx_b, |call, cx| call.hang_up(cx))
1396        .await
1397        .unwrap();
1398    executor.run_until_parked();
1399
1400    assert!(project_b.read_with(cx_b, |project, cx| project.is_disconnected(cx)));
1401
1402    // Client C opens the project.
1403    let project_c = client_c.join_remote_project(project_id, cx_c).await;
1404
1405    // When client A unshares the project, client C's project becomes read-only.
1406    project_a
1407        .update(cx_a, |project, cx| project.unshare(cx))
1408        .unwrap();
1409    executor.run_until_parked();
1410
1411    assert!(worktree_a.read_with(cx_a, |tree, _| !tree.has_update_observer()));
1412
1413    assert!(project_c.read_with(cx_c, |project, cx| project.is_disconnected(cx)));
1414
1415    // Client C can open the project again after client A re-shares.
1416    let project_id = active_call_a
1417        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1418        .await
1419        .unwrap();
1420    let project_c2 = client_c.join_remote_project(project_id, cx_c).await;
1421    executor.run_until_parked();
1422
1423    assert!(worktree_a.read_with(cx_a, |tree, _| tree.has_update_observer()));
1424    project_c2
1425        .update(cx_c, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
1426        .await
1427        .unwrap();
1428
1429    // When client A (the host) leaves the room, the project gets unshared and guests are notified.
1430    active_call_a
1431        .update(cx_a, |call, cx| call.hang_up(cx))
1432        .await
1433        .unwrap();
1434    executor.run_until_parked();
1435
1436    project_a.read_with(cx_a, |project, _| assert!(!project.is_shared()));
1437
1438    project_c2.read_with(cx_c, |project, cx| {
1439        assert!(project.is_disconnected(cx));
1440        assert!(project.collaborators().is_empty());
1441    });
1442}
1443
1444#[gpui::test(iterations = 10)]
1445async fn test_project_reconnect(
1446    executor: BackgroundExecutor,
1447    cx_a: &mut TestAppContext,
1448    cx_b: &mut TestAppContext,
1449) {
1450    let mut server = TestServer::start(executor.clone()).await;
1451    let client_a = server.create_client(cx_a, "user_a").await;
1452    let client_b = server.create_client(cx_b, "user_b").await;
1453    server
1454        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
1455        .await;
1456
1457    cx_b.update(editor::init);
1458
1459    client_a
1460        .fs()
1461        .insert_tree(
1462            "/root-1",
1463            json!({
1464                "dir1": {
1465                    "a.txt": "a",
1466                    "b.txt": "b",
1467                    "subdir1": {
1468                        "c.txt": "c",
1469                        "d.txt": "d",
1470                        "e.txt": "e",
1471                    }
1472                },
1473                "dir2": {
1474                    "v.txt": "v",
1475                },
1476                "dir3": {
1477                    "w.txt": "w",
1478                    "x.txt": "x",
1479                    "y.txt": "y",
1480                },
1481                "dir4": {
1482                    "z.txt": "z",
1483                },
1484            }),
1485        )
1486        .await;
1487    client_a
1488        .fs()
1489        .insert_tree(
1490            "/root-2",
1491            json!({
1492                "2.txt": "2",
1493            }),
1494        )
1495        .await;
1496    client_a
1497        .fs()
1498        .insert_tree(
1499            "/root-3",
1500            json!({
1501                "3.txt": "3",
1502            }),
1503        )
1504        .await;
1505
1506    let active_call_a = cx_a.read(ActiveCall::global);
1507    let (project_a1, _) = client_a.build_local_project("/root-1/dir1", cx_a).await;
1508    let (project_a2, _) = client_a.build_local_project("/root-2", cx_a).await;
1509    let (project_a3, _) = client_a.build_local_project("/root-3", cx_a).await;
1510    let worktree_a1 =
1511        project_a1.read_with(cx_a, |project, cx| project.worktrees(cx).next().unwrap());
1512    let project1_id = active_call_a
1513        .update(cx_a, |call, cx| call.share_project(project_a1.clone(), cx))
1514        .await
1515        .unwrap();
1516    let project2_id = active_call_a
1517        .update(cx_a, |call, cx| call.share_project(project_a2.clone(), cx))
1518        .await
1519        .unwrap();
1520    let project3_id = active_call_a
1521        .update(cx_a, |call, cx| call.share_project(project_a3.clone(), cx))
1522        .await
1523        .unwrap();
1524
1525    let project_b1 = client_b.join_remote_project(project1_id, cx_b).await;
1526    let project_b2 = client_b.join_remote_project(project2_id, cx_b).await;
1527    let project_b3 = client_b.join_remote_project(project3_id, cx_b).await;
1528    executor.run_until_parked();
1529
1530    let worktree1_id = worktree_a1.read_with(cx_a, |worktree, _| {
1531        assert!(worktree.has_update_observer());
1532        worktree.id()
1533    });
1534    let (worktree_a2, _) = project_a1
1535        .update(cx_a, |p, cx| {
1536            p.find_or_create_worktree("/root-1/dir2", true, cx)
1537        })
1538        .await
1539        .unwrap();
1540    executor.run_until_parked();
1541
1542    let worktree2_id = worktree_a2.read_with(cx_a, |tree, _| {
1543        assert!(tree.has_update_observer());
1544        tree.id()
1545    });
1546    executor.run_until_parked();
1547
1548    project_b1.read_with(cx_b, |project, cx| {
1549        assert!(project.worktree_for_id(worktree2_id, cx).is_some())
1550    });
1551
1552    let buffer_a1 = project_a1
1553        .update(cx_a, |p, cx| p.open_buffer((worktree1_id, "a.txt"), cx))
1554        .await
1555        .unwrap();
1556    let buffer_b1 = project_b1
1557        .update(cx_b, |p, cx| p.open_buffer((worktree1_id, "a.txt"), cx))
1558        .await
1559        .unwrap();
1560
1561    // Drop client A's connection.
1562    server.forbid_connections();
1563    server.disconnect_client(client_a.peer_id().unwrap());
1564    executor.advance_clock(RECEIVE_TIMEOUT);
1565
1566    project_a1.read_with(cx_a, |project, _| {
1567        assert!(project.is_shared());
1568        assert_eq!(project.collaborators().len(), 1);
1569    });
1570
1571    project_b1.read_with(cx_b, |project, cx| {
1572        assert!(!project.is_disconnected(cx));
1573        assert_eq!(project.collaborators().len(), 1);
1574    });
1575
1576    worktree_a1.read_with(cx_a, |tree, _| assert!(tree.has_update_observer()));
1577
1578    // While client A is disconnected, add and remove files from client A's project.
1579    client_a
1580        .fs()
1581        .insert_tree(
1582            "/root-1/dir1/subdir2",
1583            json!({
1584                "f.txt": "f-contents",
1585                "g.txt": "g-contents",
1586                "h.txt": "h-contents",
1587                "i.txt": "i-contents",
1588            }),
1589        )
1590        .await;
1591    client_a
1592        .fs()
1593        .remove_dir(
1594            "/root-1/dir1/subdir1".as_ref(),
1595            RemoveOptions {
1596                recursive: true,
1597                ..Default::default()
1598            },
1599        )
1600        .await
1601        .unwrap();
1602
1603    // While client A is disconnected, add and remove worktrees from client A's project.
1604    project_a1.update(cx_a, |project, cx| {
1605        project.remove_worktree(worktree2_id, cx)
1606    });
1607    let (worktree_a3, _) = project_a1
1608        .update(cx_a, |p, cx| {
1609            p.find_or_create_worktree("/root-1/dir3", true, cx)
1610        })
1611        .await
1612        .unwrap();
1613    worktree_a3
1614        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1615        .await;
1616
1617    let worktree3_id = worktree_a3.read_with(cx_a, |tree, _| {
1618        assert!(!tree.has_update_observer());
1619        tree.id()
1620    });
1621    executor.run_until_parked();
1622
1623    // While client A is disconnected, close project 2
1624    cx_a.update(|_| drop(project_a2));
1625
1626    // While client A is disconnected, mutate a buffer on both the host and the guest.
1627    buffer_a1.update(cx_a, |buf, cx| buf.edit([(0..0, "W")], None, cx));
1628    buffer_b1.update(cx_b, |buf, cx| buf.edit([(1..1, "Z")], None, cx));
1629    executor.run_until_parked();
1630
1631    // Client A reconnects. Their project is re-shared, and client B re-joins it.
1632    server.allow_connections();
1633    client_a
1634        .authenticate_and_connect(false, &cx_a.to_async())
1635        .await
1636        .unwrap();
1637    executor.run_until_parked();
1638
1639    project_a1.read_with(cx_a, |project, cx| {
1640        assert!(project.is_shared());
1641        assert!(worktree_a1.read(cx).has_update_observer());
1642        assert_eq!(
1643            worktree_a1
1644                .read(cx)
1645                .snapshot()
1646                .paths()
1647                .map(|p| p.to_str().unwrap())
1648                .collect::<Vec<_>>(),
1649            vec![
1650                "a.txt",
1651                "b.txt",
1652                "subdir2",
1653                "subdir2/f.txt",
1654                "subdir2/g.txt",
1655                "subdir2/h.txt",
1656                "subdir2/i.txt"
1657            ]
1658        );
1659        assert!(worktree_a3.read(cx).has_update_observer());
1660        assert_eq!(
1661            worktree_a3
1662                .read(cx)
1663                .snapshot()
1664                .paths()
1665                .map(|p| p.to_str().unwrap())
1666                .collect::<Vec<_>>(),
1667            vec!["w.txt", "x.txt", "y.txt"]
1668        );
1669    });
1670
1671    project_b1.read_with(cx_b, |project, cx| {
1672        assert!(!project.is_disconnected(cx));
1673        assert_eq!(
1674            project
1675                .worktree_for_id(worktree1_id, cx)
1676                .unwrap()
1677                .read(cx)
1678                .snapshot()
1679                .paths()
1680                .map(|p| p.to_str().unwrap())
1681                .collect::<Vec<_>>(),
1682            vec![
1683                "a.txt",
1684                "b.txt",
1685                "subdir2",
1686                "subdir2/f.txt",
1687                "subdir2/g.txt",
1688                "subdir2/h.txt",
1689                "subdir2/i.txt"
1690            ]
1691        );
1692        assert!(project.worktree_for_id(worktree2_id, cx).is_none());
1693        assert_eq!(
1694            project
1695                .worktree_for_id(worktree3_id, cx)
1696                .unwrap()
1697                .read(cx)
1698                .snapshot()
1699                .paths()
1700                .map(|p| p.to_str().unwrap())
1701                .collect::<Vec<_>>(),
1702            vec!["w.txt", "x.txt", "y.txt"]
1703        );
1704    });
1705
1706    project_b2.read_with(cx_b, |project, cx| assert!(project.is_disconnected(cx)));
1707
1708    project_b3.read_with(cx_b, |project, cx| assert!(!project.is_disconnected(cx)));
1709
1710    buffer_a1.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "WaZ"));
1711
1712    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "WaZ"));
1713
1714    // Drop client B's connection.
1715    server.forbid_connections();
1716    server.disconnect_client(client_b.peer_id().unwrap());
1717    executor.advance_clock(RECEIVE_TIMEOUT);
1718
1719    // While client B is disconnected, add and remove files from client A's project
1720    client_a
1721        .fs()
1722        .insert_file("/root-1/dir1/subdir2/j.txt", "j-contents".into())
1723        .await;
1724    client_a
1725        .fs()
1726        .remove_file("/root-1/dir1/subdir2/i.txt".as_ref(), Default::default())
1727        .await
1728        .unwrap();
1729
1730    // While client B is disconnected, add and remove worktrees from client A's project.
1731    let (worktree_a4, _) = project_a1
1732        .update(cx_a, |p, cx| {
1733            p.find_or_create_worktree("/root-1/dir4", true, cx)
1734        })
1735        .await
1736        .unwrap();
1737    executor.run_until_parked();
1738
1739    let worktree4_id = worktree_a4.read_with(cx_a, |tree, _| {
1740        assert!(tree.has_update_observer());
1741        tree.id()
1742    });
1743    project_a1.update(cx_a, |project, cx| {
1744        project.remove_worktree(worktree3_id, cx)
1745    });
1746    executor.run_until_parked();
1747
1748    // While client B is disconnected, mutate a buffer on both the host and the guest.
1749    buffer_a1.update(cx_a, |buf, cx| buf.edit([(1..1, "X")], None, cx));
1750    buffer_b1.update(cx_b, |buf, cx| buf.edit([(2..2, "Y")], None, cx));
1751    executor.run_until_parked();
1752
1753    // While disconnected, close project 3
1754    cx_a.update(|_| drop(project_a3));
1755
1756    // Client B reconnects. They re-join the room and the remaining shared project.
1757    server.allow_connections();
1758    client_b
1759        .authenticate_and_connect(false, &cx_b.to_async())
1760        .await
1761        .unwrap();
1762    executor.run_until_parked();
1763
1764    project_b1.read_with(cx_b, |project, cx| {
1765        assert!(!project.is_disconnected(cx));
1766        assert_eq!(
1767            project
1768                .worktree_for_id(worktree1_id, cx)
1769                .unwrap()
1770                .read(cx)
1771                .snapshot()
1772                .paths()
1773                .map(|p| p.to_str().unwrap())
1774                .collect::<Vec<_>>(),
1775            vec![
1776                "a.txt",
1777                "b.txt",
1778                "subdir2",
1779                "subdir2/f.txt",
1780                "subdir2/g.txt",
1781                "subdir2/h.txt",
1782                "subdir2/j.txt"
1783            ]
1784        );
1785        assert!(project.worktree_for_id(worktree2_id, cx).is_none());
1786        assert_eq!(
1787            project
1788                .worktree_for_id(worktree4_id, cx)
1789                .unwrap()
1790                .read(cx)
1791                .snapshot()
1792                .paths()
1793                .map(|p| p.to_str().unwrap())
1794                .collect::<Vec<_>>(),
1795            vec!["z.txt"]
1796        );
1797    });
1798
1799    project_b3.read_with(cx_b, |project, cx| assert!(project.is_disconnected(cx)));
1800
1801    buffer_a1.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "WXaYZ"));
1802
1803    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "WXaYZ"));
1804}
1805
1806#[gpui::test(iterations = 10)]
1807async fn test_active_call_events(
1808    executor: BackgroundExecutor,
1809    cx_a: &mut TestAppContext,
1810    cx_b: &mut TestAppContext,
1811) {
1812    let mut server = TestServer::start(executor.clone()).await;
1813    let client_a = server.create_client(cx_a, "user_a").await;
1814    let client_b = server.create_client(cx_b, "user_b").await;
1815    client_a.fs().insert_tree("/a", json!({})).await;
1816    client_b.fs().insert_tree("/b", json!({})).await;
1817
1818    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
1819    let (project_b, _) = client_b.build_local_project("/b", cx_b).await;
1820
1821    server
1822        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
1823        .await;
1824    let active_call_a = cx_a.read(ActiveCall::global);
1825    let active_call_b = cx_b.read(ActiveCall::global);
1826
1827    let events_a = active_call_events(cx_a);
1828    let events_b = active_call_events(cx_b);
1829
1830    let project_a_id = active_call_a
1831        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1832        .await
1833        .unwrap();
1834    executor.run_until_parked();
1835    assert_eq!(mem::take(&mut *events_a.borrow_mut()), vec![]);
1836    assert_eq!(
1837        mem::take(&mut *events_b.borrow_mut()),
1838        vec![room::Event::RemoteProjectShared {
1839            owner: Arc::new(User {
1840                id: client_a.user_id().unwrap(),
1841                github_login: "user_a".to_string(),
1842                avatar_uri: "avatar_a".into(),
1843                name: None,
1844                email: None,
1845            }),
1846            project_id: project_a_id,
1847            worktree_root_names: vec!["a".to_string()],
1848        }]
1849    );
1850
1851    let project_b_id = active_call_b
1852        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
1853        .await
1854        .unwrap();
1855    executor.run_until_parked();
1856    assert_eq!(
1857        mem::take(&mut *events_a.borrow_mut()),
1858        vec![room::Event::RemoteProjectShared {
1859            owner: Arc::new(User {
1860                id: client_b.user_id().unwrap(),
1861                github_login: "user_b".to_string(),
1862                avatar_uri: "avatar_b".into(),
1863                name: None,
1864                email: None,
1865            }),
1866            project_id: project_b_id,
1867            worktree_root_names: vec!["b".to_string()]
1868        }]
1869    );
1870    assert_eq!(mem::take(&mut *events_b.borrow_mut()), vec![]);
1871
1872    // Sharing a project twice is idempotent.
1873    let project_b_id_2 = active_call_b
1874        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
1875        .await
1876        .unwrap();
1877    assert_eq!(project_b_id_2, project_b_id);
1878    executor.run_until_parked();
1879    assert_eq!(mem::take(&mut *events_a.borrow_mut()), vec![]);
1880    assert_eq!(mem::take(&mut *events_b.borrow_mut()), vec![]);
1881
1882    // Unsharing a project should dispatch the RemoteProjectUnshared event.
1883    active_call_a
1884        .update(cx_a, |call, cx| call.hang_up(cx))
1885        .await
1886        .unwrap();
1887    executor.run_until_parked();
1888
1889    assert_eq!(
1890        mem::take(&mut *events_a.borrow_mut()),
1891        vec![room::Event::RoomLeft { channel_id: None }]
1892    );
1893    assert_eq!(
1894        mem::take(&mut *events_b.borrow_mut()),
1895        vec![room::Event::RemoteProjectUnshared {
1896            project_id: project_a_id,
1897        }]
1898    );
1899}
1900
1901fn active_call_events(cx: &mut TestAppContext) -> Rc<RefCell<Vec<room::Event>>> {
1902    let events = Rc::new(RefCell::new(Vec::new()));
1903    let active_call = cx.read(ActiveCall::global);
1904    cx.update({
1905        let events = events.clone();
1906        |cx| {
1907            cx.subscribe(&active_call, move |_, event, _| {
1908                events.borrow_mut().push(event.clone())
1909            })
1910            .detach()
1911        }
1912    });
1913    events
1914}
1915
1916#[gpui::test]
1917async fn test_mute_deafen(
1918    executor: BackgroundExecutor,
1919    cx_a: &mut TestAppContext,
1920    cx_b: &mut TestAppContext,
1921    cx_c: &mut TestAppContext,
1922) {
1923    let mut server = TestServer::start(executor.clone()).await;
1924    let client_a = server.create_client(cx_a, "user_a").await;
1925    let client_b = server.create_client(cx_b, "user_b").await;
1926    let client_c = server.create_client(cx_c, "user_c").await;
1927
1928    server
1929        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
1930        .await;
1931
1932    let active_call_a = cx_a.read(ActiveCall::global);
1933    let active_call_b = cx_b.read(ActiveCall::global);
1934    let active_call_c = cx_c.read(ActiveCall::global);
1935
1936    // User A calls user B, B answers.
1937    active_call_a
1938        .update(cx_a, |call, cx| {
1939            call.invite(client_b.user_id().unwrap(), None, cx)
1940        })
1941        .await
1942        .unwrap();
1943    executor.run_until_parked();
1944    active_call_b
1945        .update(cx_b, |call, cx| call.accept_incoming(cx))
1946        .await
1947        .unwrap();
1948    executor.run_until_parked();
1949
1950    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
1951    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
1952
1953    room_a.read_with(cx_a, |room, _| assert!(!room.is_muted()));
1954    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
1955
1956    // Users A and B are both unmuted.
1957    assert_eq!(
1958        participant_audio_state(&room_a, cx_a),
1959        &[ParticipantAudioState {
1960            user_id: client_b.user_id().unwrap(),
1961            is_muted: false,
1962            audio_tracks_playing: vec![true],
1963        }]
1964    );
1965    assert_eq!(
1966        participant_audio_state(&room_b, cx_b),
1967        &[ParticipantAudioState {
1968            user_id: client_a.user_id().unwrap(),
1969            is_muted: false,
1970            audio_tracks_playing: vec![true],
1971        }]
1972    );
1973
1974    // User A mutes
1975    room_a.update(cx_a, |room, cx| room.toggle_mute(cx));
1976    executor.run_until_parked();
1977
1978    // User A hears user B, but B doesn't hear A.
1979    room_a.read_with(cx_a, |room, _| assert!(room.is_muted()));
1980    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
1981    assert_eq!(
1982        participant_audio_state(&room_a, cx_a),
1983        &[ParticipantAudioState {
1984            user_id: client_b.user_id().unwrap(),
1985            is_muted: false,
1986            audio_tracks_playing: vec![true],
1987        }]
1988    );
1989    assert_eq!(
1990        participant_audio_state(&room_b, cx_b),
1991        &[ParticipantAudioState {
1992            user_id: client_a.user_id().unwrap(),
1993            is_muted: true,
1994            audio_tracks_playing: vec![true],
1995        }]
1996    );
1997
1998    // User A deafens
1999    room_a.update(cx_a, |room, cx| room.toggle_deafen(cx));
2000    executor.run_until_parked();
2001
2002    // User A does not hear user B.
2003    room_a.read_with(cx_a, |room, _| assert!(room.is_muted()));
2004    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
2005    assert_eq!(
2006        participant_audio_state(&room_a, cx_a),
2007        &[ParticipantAudioState {
2008            user_id: client_b.user_id().unwrap(),
2009            is_muted: false,
2010            audio_tracks_playing: vec![false],
2011        }]
2012    );
2013    assert_eq!(
2014        participant_audio_state(&room_b, cx_b),
2015        &[ParticipantAudioState {
2016            user_id: client_a.user_id().unwrap(),
2017            is_muted: true,
2018            audio_tracks_playing: vec![true],
2019        }]
2020    );
2021
2022    // User B calls user C, C joins.
2023    active_call_b
2024        .update(cx_b, |call, cx| {
2025            call.invite(client_c.user_id().unwrap(), None, cx)
2026        })
2027        .await
2028        .unwrap();
2029    executor.run_until_parked();
2030    active_call_c
2031        .update(cx_c, |call, cx| call.accept_incoming(cx))
2032        .await
2033        .unwrap();
2034    executor.run_until_parked();
2035
2036    // User A does not hear users B or C.
2037    assert_eq!(
2038        participant_audio_state(&room_a, cx_a),
2039        &[
2040            ParticipantAudioState {
2041                user_id: client_b.user_id().unwrap(),
2042                is_muted: false,
2043                audio_tracks_playing: vec![false],
2044            },
2045            ParticipantAudioState {
2046                user_id: client_c.user_id().unwrap(),
2047                is_muted: false,
2048                audio_tracks_playing: vec![false],
2049            }
2050        ]
2051    );
2052    assert_eq!(
2053        participant_audio_state(&room_b, cx_b),
2054        &[
2055            ParticipantAudioState {
2056                user_id: client_a.user_id().unwrap(),
2057                is_muted: true,
2058                audio_tracks_playing: vec![true],
2059            },
2060            ParticipantAudioState {
2061                user_id: client_c.user_id().unwrap(),
2062                is_muted: false,
2063                audio_tracks_playing: vec![true],
2064            }
2065        ]
2066    );
2067
2068    #[derive(PartialEq, Eq, Debug)]
2069    struct ParticipantAudioState {
2070        user_id: u64,
2071        is_muted: bool,
2072        audio_tracks_playing: Vec<bool>,
2073    }
2074
2075    fn participant_audio_state(
2076        room: &Entity<Room>,
2077        cx: &TestAppContext,
2078    ) -> Vec<ParticipantAudioState> {
2079        room.read_with(cx, |room, _| {
2080            room.remote_participants()
2081                .iter()
2082                .map(|(user_id, participant)| ParticipantAudioState {
2083                    user_id: *user_id,
2084                    is_muted: participant.muted,
2085                    audio_tracks_playing: participant
2086                        .audio_tracks
2087                        .values()
2088                        .map({
2089                            #[cfg(target_os = "macos")]
2090                            {
2091                                |track| track.is_playing()
2092                            }
2093
2094                            #[cfg(not(target_os = "macos"))]
2095                            {
2096                                |(track, _)| track.rtc_track().enabled()
2097                            }
2098                        })
2099                        .collect(),
2100                })
2101                .collect::<Vec<_>>()
2102        })
2103    }
2104}
2105
2106#[gpui::test(iterations = 10)]
2107async fn test_room_location(
2108    executor: BackgroundExecutor,
2109    cx_a: &mut TestAppContext,
2110    cx_b: &mut TestAppContext,
2111) {
2112    let mut server = TestServer::start(executor.clone()).await;
2113    let client_a = server.create_client(cx_a, "user_a").await;
2114    let client_b = server.create_client(cx_b, "user_b").await;
2115    client_a.fs().insert_tree("/a", json!({})).await;
2116    client_b.fs().insert_tree("/b", json!({})).await;
2117
2118    let active_call_a = cx_a.read(ActiveCall::global);
2119    let active_call_b = cx_b.read(ActiveCall::global);
2120
2121    let a_notified = Rc::new(Cell::new(false));
2122    cx_a.update({
2123        let notified = a_notified.clone();
2124        |cx| {
2125            cx.observe(&active_call_a, move |_, _| notified.set(true))
2126                .detach()
2127        }
2128    });
2129
2130    let b_notified = Rc::new(Cell::new(false));
2131    cx_b.update({
2132        let b_notified = b_notified.clone();
2133        |cx| {
2134            cx.observe(&active_call_b, move |_, _| b_notified.set(true))
2135                .detach()
2136        }
2137    });
2138
2139    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
2140    active_call_a
2141        .update(cx_a, |call, cx| call.set_location(Some(&project_a), cx))
2142        .await
2143        .unwrap();
2144    let (project_b, _) = client_b.build_local_project("/b", cx_b).await;
2145
2146    server
2147        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
2148        .await;
2149
2150    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
2151
2152    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
2153    executor.run_until_parked();
2154    assert!(a_notified.take());
2155    assert_eq!(
2156        participant_locations(&room_a, cx_a),
2157        vec![("user_b".to_string(), ParticipantLocation::External)]
2158    );
2159    assert!(b_notified.take());
2160    assert_eq!(
2161        participant_locations(&room_b, cx_b),
2162        vec![("user_a".to_string(), ParticipantLocation::UnsharedProject)]
2163    );
2164
2165    let project_a_id = active_call_a
2166        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
2167        .await
2168        .unwrap();
2169    executor.run_until_parked();
2170    assert!(a_notified.take());
2171    assert_eq!(
2172        participant_locations(&room_a, cx_a),
2173        vec![("user_b".to_string(), ParticipantLocation::External)]
2174    );
2175    assert!(b_notified.take());
2176    assert_eq!(
2177        participant_locations(&room_b, cx_b),
2178        vec![(
2179            "user_a".to_string(),
2180            ParticipantLocation::SharedProject {
2181                project_id: project_a_id
2182            }
2183        )]
2184    );
2185
2186    let project_b_id = active_call_b
2187        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
2188        .await
2189        .unwrap();
2190    executor.run_until_parked();
2191    assert!(a_notified.take());
2192    assert_eq!(
2193        participant_locations(&room_a, cx_a),
2194        vec![("user_b".to_string(), ParticipantLocation::External)]
2195    );
2196    assert!(b_notified.take());
2197    assert_eq!(
2198        participant_locations(&room_b, cx_b),
2199        vec![(
2200            "user_a".to_string(),
2201            ParticipantLocation::SharedProject {
2202                project_id: project_a_id
2203            }
2204        )]
2205    );
2206
2207    active_call_b
2208        .update(cx_b, |call, cx| call.set_location(Some(&project_b), cx))
2209        .await
2210        .unwrap();
2211    executor.run_until_parked();
2212    assert!(a_notified.take());
2213    assert_eq!(
2214        participant_locations(&room_a, cx_a),
2215        vec![(
2216            "user_b".to_string(),
2217            ParticipantLocation::SharedProject {
2218                project_id: project_b_id
2219            }
2220        )]
2221    );
2222    assert!(b_notified.take());
2223    assert_eq!(
2224        participant_locations(&room_b, cx_b),
2225        vec![(
2226            "user_a".to_string(),
2227            ParticipantLocation::SharedProject {
2228                project_id: project_a_id
2229            }
2230        )]
2231    );
2232
2233    active_call_b
2234        .update(cx_b, |call, cx| call.set_location(None, cx))
2235        .await
2236        .unwrap();
2237    executor.run_until_parked();
2238    assert!(a_notified.take());
2239    assert_eq!(
2240        participant_locations(&room_a, cx_a),
2241        vec![("user_b".to_string(), ParticipantLocation::External)]
2242    );
2243    assert!(b_notified.take());
2244    assert_eq!(
2245        participant_locations(&room_b, cx_b),
2246        vec![(
2247            "user_a".to_string(),
2248            ParticipantLocation::SharedProject {
2249                project_id: project_a_id
2250            }
2251        )]
2252    );
2253
2254    fn participant_locations(
2255        room: &Entity<Room>,
2256        cx: &TestAppContext,
2257    ) -> Vec<(String, ParticipantLocation)> {
2258        room.read_with(cx, |room, _| {
2259            room.remote_participants()
2260                .values()
2261                .map(|participant| {
2262                    (
2263                        participant.user.github_login.to_string(),
2264                        participant.location,
2265                    )
2266                })
2267                .collect()
2268        })
2269    }
2270}
2271
2272#[gpui::test(iterations = 10)]
2273async fn test_propagate_saves_and_fs_changes(
2274    executor: BackgroundExecutor,
2275    cx_a: &mut TestAppContext,
2276    cx_b: &mut TestAppContext,
2277    cx_c: &mut TestAppContext,
2278) {
2279    let mut server = TestServer::start(executor.clone()).await;
2280    let client_a = server.create_client(cx_a, "user_a").await;
2281    let client_b = server.create_client(cx_b, "user_b").await;
2282    let client_c = server.create_client(cx_c, "user_c").await;
2283
2284    server
2285        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2286        .await;
2287    let active_call_a = cx_a.read(ActiveCall::global);
2288
2289    let rust = Arc::new(Language::new(
2290        LanguageConfig {
2291            name: "Rust".into(),
2292            matcher: LanguageMatcher {
2293                path_suffixes: vec!["rs".to_string()],
2294                ..Default::default()
2295            },
2296            ..Default::default()
2297        },
2298        Some(tree_sitter_rust::LANGUAGE.into()),
2299    ));
2300    let javascript = Arc::new(Language::new(
2301        LanguageConfig {
2302            name: "JavaScript".into(),
2303            matcher: LanguageMatcher {
2304                path_suffixes: vec!["js".to_string()],
2305                ..Default::default()
2306            },
2307            ..Default::default()
2308        },
2309        Some(tree_sitter_rust::LANGUAGE.into()),
2310    ));
2311    for client in [&client_a, &client_b, &client_c] {
2312        client.language_registry().add(rust.clone());
2313        client.language_registry().add(javascript.clone());
2314    }
2315
2316    client_a
2317        .fs()
2318        .insert_tree(
2319            "/a",
2320            json!({
2321                "file1.rs": "",
2322                "file2": ""
2323            }),
2324        )
2325        .await;
2326    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
2327
2328    let worktree_a = project_a.read_with(cx_a, |p, cx| p.worktrees(cx).next().unwrap());
2329    let project_id = active_call_a
2330        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
2331        .await
2332        .unwrap();
2333
2334    // Join that worktree as clients B and C.
2335    let project_b = client_b.join_remote_project(project_id, cx_b).await;
2336    let project_c = client_c.join_remote_project(project_id, cx_c).await;
2337
2338    let worktree_b = project_b.read_with(cx_b, |p, cx| p.worktrees(cx).next().unwrap());
2339
2340    let worktree_c = project_c.read_with(cx_c, |p, cx| p.worktrees(cx).next().unwrap());
2341
2342    // Open and edit a buffer as both guests B and C.
2343    let buffer_b = project_b
2344        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2345        .await
2346        .unwrap();
2347    let buffer_c = project_c
2348        .update(cx_c, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2349        .await
2350        .unwrap();
2351
2352    buffer_b.read_with(cx_b, |buffer, _| {
2353        assert_eq!(buffer.language().unwrap().name(), "Rust".into());
2354    });
2355
2356    buffer_c.read_with(cx_c, |buffer, _| {
2357        assert_eq!(buffer.language().unwrap().name(), "Rust".into());
2358    });
2359    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "i-am-b, ")], None, cx));
2360    buffer_c.update(cx_c, |buf, cx| buf.edit([(0..0, "i-am-c, ")], None, cx));
2361
2362    // Open and edit that buffer as the host.
2363    let buffer_a = project_a
2364        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2365        .await
2366        .unwrap();
2367
2368    executor.run_until_parked();
2369
2370    buffer_a.read_with(cx_a, |buf, _| assert_eq!(buf.text(), "i-am-c, i-am-b, "));
2371    buffer_a.update(cx_a, |buf, cx| {
2372        buf.edit([(buf.len()..buf.len(), "i-am-a")], None, cx)
2373    });
2374
2375    executor.run_until_parked();
2376
2377    buffer_a.read_with(cx_a, |buf, _| {
2378        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2379    });
2380
2381    buffer_b.read_with(cx_b, |buf, _| {
2382        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2383    });
2384
2385    buffer_c.read_with(cx_c, |buf, _| {
2386        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2387    });
2388
2389    // Edit the buffer as the host and concurrently save as guest B.
2390    let save_b = project_b.update(cx_b, |project, cx| {
2391        project.save_buffer(buffer_b.clone(), cx)
2392    });
2393    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "hi-a, ")], None, cx));
2394    save_b.await.unwrap();
2395    assert_eq!(
2396        client_a.fs().load("/a/file1.rs".as_ref()).await.unwrap(),
2397        "hi-a, i-am-c, i-am-b, i-am-a"
2398    );
2399
2400    executor.run_until_parked();
2401
2402    buffer_a.read_with(cx_a, |buf, _| assert!(!buf.is_dirty()));
2403
2404    buffer_b.read_with(cx_b, |buf, _| assert!(!buf.is_dirty()));
2405
2406    buffer_c.read_with(cx_c, |buf, _| assert!(!buf.is_dirty()));
2407
2408    // Make changes on host's file system, see those changes on guest worktrees.
2409    client_a
2410        .fs()
2411        .rename(
2412            "/a/file1.rs".as_ref(),
2413            "/a/file1.js".as_ref(),
2414            Default::default(),
2415        )
2416        .await
2417        .unwrap();
2418    client_a
2419        .fs()
2420        .rename("/a/file2".as_ref(), "/a/file3".as_ref(), Default::default())
2421        .await
2422        .unwrap();
2423    client_a.fs().insert_file("/a/file4", "4".into()).await;
2424    executor.run_until_parked();
2425
2426    worktree_a.read_with(cx_a, |tree, _| {
2427        assert_eq!(
2428            tree.paths()
2429                .map(|p| p.to_string_lossy())
2430                .collect::<Vec<_>>(),
2431            ["file1.js", "file3", "file4"]
2432        )
2433    });
2434
2435    worktree_b.read_with(cx_b, |tree, _| {
2436        assert_eq!(
2437            tree.paths()
2438                .map(|p| p.to_string_lossy())
2439                .collect::<Vec<_>>(),
2440            ["file1.js", "file3", "file4"]
2441        )
2442    });
2443
2444    worktree_c.read_with(cx_c, |tree, _| {
2445        assert_eq!(
2446            tree.paths()
2447                .map(|p| p.to_string_lossy())
2448                .collect::<Vec<_>>(),
2449            ["file1.js", "file3", "file4"]
2450        )
2451    });
2452
2453    // Ensure buffer files are updated as well.
2454
2455    buffer_a.read_with(cx_a, |buffer, _| {
2456        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2457        assert_eq!(buffer.language().unwrap().name(), "JavaScript".into());
2458    });
2459
2460    buffer_b.read_with(cx_b, |buffer, _| {
2461        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2462        assert_eq!(buffer.language().unwrap().name(), "JavaScript".into());
2463    });
2464
2465    buffer_c.read_with(cx_c, |buffer, _| {
2466        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2467        assert_eq!(buffer.language().unwrap().name(), "JavaScript".into());
2468    });
2469
2470    let new_buffer_a = project_a
2471        .update(cx_a, |p, cx| p.create_buffer(cx))
2472        .await
2473        .unwrap();
2474
2475    let new_buffer_id = new_buffer_a.read_with(cx_a, |buffer, _| buffer.remote_id());
2476    let new_buffer_b = project_b
2477        .update(cx_b, |p, cx| p.open_buffer_by_id(new_buffer_id, cx))
2478        .await
2479        .unwrap();
2480
2481    new_buffer_b.read_with(cx_b, |buffer, _| {
2482        assert!(buffer.file().is_none());
2483    });
2484
2485    new_buffer_a.update(cx_a, |buffer, cx| {
2486        buffer.edit([(0..0, "ok")], None, cx);
2487    });
2488    project_a
2489        .update(cx_a, |project, cx| {
2490            let path = ProjectPath {
2491                path: Arc::from(Path::new("file3.rs")),
2492                worktree_id: worktree_a.read(cx).id(),
2493            };
2494
2495            project.save_buffer_as(new_buffer_a.clone(), path, cx)
2496        })
2497        .await
2498        .unwrap();
2499
2500    executor.run_until_parked();
2501
2502    new_buffer_b.read_with(cx_b, |buffer_b, _| {
2503        assert_eq!(
2504            buffer_b.file().unwrap().path().as_ref(),
2505            Path::new("file3.rs")
2506        );
2507
2508        new_buffer_a.read_with(cx_a, |buffer_a, _| {
2509            assert_eq!(buffer_b.saved_mtime(), buffer_a.saved_mtime());
2510            assert_eq!(buffer_b.saved_version(), buffer_a.saved_version());
2511        });
2512    });
2513}
2514
2515#[gpui::test(iterations = 10)]
2516async fn test_git_diff_base_change(
2517    executor: BackgroundExecutor,
2518    cx_a: &mut TestAppContext,
2519    cx_b: &mut TestAppContext,
2520) {
2521    let mut server = TestServer::start(executor.clone()).await;
2522    let client_a = server.create_client(cx_a, "user_a").await;
2523    let client_b = server.create_client(cx_b, "user_b").await;
2524    server
2525        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
2526        .await;
2527    let active_call_a = cx_a.read(ActiveCall::global);
2528
2529    client_a
2530        .fs()
2531        .insert_tree(
2532            "/dir",
2533            json!({
2534            ".git": {},
2535            "sub": {
2536                ".git": {},
2537                "b.txt": "
2538                    one
2539                    two
2540                    three
2541                ".unindent(),
2542            },
2543            "a.txt": "
2544                    one
2545                    two
2546                    three
2547                ".unindent(),
2548            }),
2549        )
2550        .await;
2551
2552    let (project_local, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2553    let project_id = active_call_a
2554        .update(cx_a, |call, cx| {
2555            call.share_project(project_local.clone(), cx)
2556        })
2557        .await
2558        .unwrap();
2559
2560    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
2561
2562    let staged_text = "
2563        one
2564        three
2565    "
2566    .unindent();
2567
2568    let committed_text = "
2569        one
2570        TWO
2571        three
2572    "
2573    .unindent();
2574
2575    let new_committed_text = "
2576        one
2577        TWO_HUNDRED
2578        three
2579    "
2580    .unindent();
2581
2582    let new_staged_text = "
2583        one
2584        two
2585    "
2586    .unindent();
2587
2588    client_a.fs().set_index_for_repo(
2589        Path::new("/dir/.git"),
2590        &[("a.txt".into(), staged_text.clone())],
2591    );
2592    client_a.fs().set_head_for_repo(
2593        Path::new("/dir/.git"),
2594        &[("a.txt".into(), committed_text.clone())],
2595    );
2596
2597    // Create the buffer
2598    let buffer_local_a = project_local
2599        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
2600        .await
2601        .unwrap();
2602    let local_unstaged_diff_a = project_local
2603        .update(cx_a, |p, cx| {
2604            p.open_unstaged_diff(buffer_local_a.clone(), cx)
2605        })
2606        .await
2607        .unwrap();
2608
2609    // Wait for it to catch up to the new diff
2610    executor.run_until_parked();
2611    local_unstaged_diff_a.read_with(cx_a, |diff, cx| {
2612        let buffer = buffer_local_a.read(cx);
2613        assert_eq!(
2614            diff.base_text_string().as_deref(),
2615            Some(staged_text.as_str())
2616        );
2617        assert_hunks(
2618            diff.hunks_in_row_range(0..4, buffer, cx),
2619            buffer,
2620            &diff.base_text_string().unwrap(),
2621            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2622        );
2623    });
2624
2625    // Create remote buffer
2626    let remote_buffer_a = project_remote
2627        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
2628        .await
2629        .unwrap();
2630    let remote_unstaged_diff_a = project_remote
2631        .update(cx_b, |p, cx| {
2632            p.open_unstaged_diff(remote_buffer_a.clone(), cx)
2633        })
2634        .await
2635        .unwrap();
2636
2637    // Wait remote buffer to catch up to the new diff
2638    executor.run_until_parked();
2639    remote_unstaged_diff_a.read_with(cx_b, |diff, cx| {
2640        let buffer = remote_buffer_a.read(cx);
2641        assert_eq!(
2642            diff.base_text_string().as_deref(),
2643            Some(staged_text.as_str())
2644        );
2645        assert_hunks(
2646            diff.hunks_in_row_range(0..4, buffer, cx),
2647            buffer,
2648            &diff.base_text_string().unwrap(),
2649            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2650        );
2651    });
2652
2653    // Open uncommitted changes on the guest, without opening them on the host first
2654    let remote_uncommitted_diff_a = project_remote
2655        .update(cx_b, |p, cx| {
2656            p.open_uncommitted_diff(remote_buffer_a.clone(), cx)
2657        })
2658        .await
2659        .unwrap();
2660    executor.run_until_parked();
2661    remote_uncommitted_diff_a.read_with(cx_b, |diff, cx| {
2662        let buffer = remote_buffer_a.read(cx);
2663        assert_eq!(
2664            diff.base_text_string().as_deref(),
2665            Some(committed_text.as_str())
2666        );
2667        assert_hunks(
2668            diff.hunks_in_row_range(0..4, buffer, cx),
2669            buffer,
2670            &diff.base_text_string().unwrap(),
2671            &[(
2672                1..2,
2673                "TWO\n",
2674                "two\n",
2675                DiffHunkStatus::modified(DiffHunkSecondaryStatus::HasSecondaryHunk),
2676            )],
2677        );
2678    });
2679
2680    // Update the index text of the open buffer
2681    client_a.fs().set_index_for_repo(
2682        Path::new("/dir/.git"),
2683        &[("a.txt".into(), new_staged_text.clone())],
2684    );
2685    client_a.fs().set_head_for_repo(
2686        Path::new("/dir/.git"),
2687        &[("a.txt".into(), new_committed_text.clone())],
2688    );
2689
2690    // Wait for buffer_local_a to receive it
2691    executor.run_until_parked();
2692    local_unstaged_diff_a.read_with(cx_a, |diff, cx| {
2693        let buffer = buffer_local_a.read(cx);
2694        assert_eq!(
2695            diff.base_text_string().as_deref(),
2696            Some(new_staged_text.as_str())
2697        );
2698        assert_hunks(
2699            diff.hunks_in_row_range(0..4, buffer, cx),
2700            buffer,
2701            &diff.base_text_string().unwrap(),
2702            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2703        );
2704    });
2705
2706    // Guest receives index text update
2707    remote_unstaged_diff_a.read_with(cx_b, |diff, cx| {
2708        let buffer = remote_buffer_a.read(cx);
2709        assert_eq!(
2710            diff.base_text_string().as_deref(),
2711            Some(new_staged_text.as_str())
2712        );
2713        assert_hunks(
2714            diff.hunks_in_row_range(0..4, buffer, cx),
2715            buffer,
2716            &diff.base_text_string().unwrap(),
2717            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2718        );
2719    });
2720
2721    remote_uncommitted_diff_a.read_with(cx_b, |diff, cx| {
2722        let buffer = remote_buffer_a.read(cx);
2723        assert_eq!(
2724            diff.base_text_string().as_deref(),
2725            Some(new_committed_text.as_str())
2726        );
2727        assert_hunks(
2728            diff.hunks_in_row_range(0..4, buffer, cx),
2729            buffer,
2730            &diff.base_text_string().unwrap(),
2731            &[(
2732                1..2,
2733                "TWO_HUNDRED\n",
2734                "two\n",
2735                DiffHunkStatus::modified(DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk),
2736            )],
2737        );
2738    });
2739
2740    // Nested git dir
2741    let staged_text = "
2742        one
2743        three
2744    "
2745    .unindent();
2746
2747    let new_staged_text = "
2748        one
2749        two
2750    "
2751    .unindent();
2752
2753    client_a.fs().set_index_for_repo(
2754        Path::new("/dir/sub/.git"),
2755        &[("b.txt".into(), staged_text.clone())],
2756    );
2757
2758    // Create the buffer
2759    let buffer_local_b = project_local
2760        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2761        .await
2762        .unwrap();
2763    let local_unstaged_diff_b = project_local
2764        .update(cx_a, |p, cx| {
2765            p.open_unstaged_diff(buffer_local_b.clone(), cx)
2766        })
2767        .await
2768        .unwrap();
2769
2770    // Wait for it to catch up to the new diff
2771    executor.run_until_parked();
2772    local_unstaged_diff_b.read_with(cx_a, |diff, cx| {
2773        let buffer = buffer_local_b.read(cx);
2774        assert_eq!(
2775            diff.base_text_string().as_deref(),
2776            Some(staged_text.as_str())
2777        );
2778        assert_hunks(
2779            diff.hunks_in_row_range(0..4, buffer, cx),
2780            buffer,
2781            &diff.base_text_string().unwrap(),
2782            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2783        );
2784    });
2785
2786    // Create remote buffer
2787    let remote_buffer_b = project_remote
2788        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2789        .await
2790        .unwrap();
2791    let remote_unstaged_diff_b = project_remote
2792        .update(cx_b, |p, cx| {
2793            p.open_unstaged_diff(remote_buffer_b.clone(), cx)
2794        })
2795        .await
2796        .unwrap();
2797
2798    executor.run_until_parked();
2799    remote_unstaged_diff_b.read_with(cx_b, |diff, cx| {
2800        let buffer = remote_buffer_b.read(cx);
2801        assert_eq!(
2802            diff.base_text_string().as_deref(),
2803            Some(staged_text.as_str())
2804        );
2805        assert_hunks(
2806            diff.hunks_in_row_range(0..4, buffer, cx),
2807            buffer,
2808            &staged_text,
2809            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2810        );
2811    });
2812
2813    // Updatet the staged text
2814    client_a.fs().set_index_for_repo(
2815        Path::new("/dir/sub/.git"),
2816        &[("b.txt".into(), new_staged_text.clone())],
2817    );
2818
2819    // Wait for buffer_local_b to receive it
2820    executor.run_until_parked();
2821    local_unstaged_diff_b.read_with(cx_a, |diff, cx| {
2822        let buffer = buffer_local_b.read(cx);
2823        assert_eq!(
2824            diff.base_text_string().as_deref(),
2825            Some(new_staged_text.as_str())
2826        );
2827        assert_hunks(
2828            diff.hunks_in_row_range(0..4, buffer, cx),
2829            buffer,
2830            &new_staged_text,
2831            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2832        );
2833    });
2834
2835    remote_unstaged_diff_b.read_with(cx_b, |diff, cx| {
2836        let buffer = remote_buffer_b.read(cx);
2837        assert_eq!(
2838            diff.base_text_string().as_deref(),
2839            Some(new_staged_text.as_str())
2840        );
2841        assert_hunks(
2842            diff.hunks_in_row_range(0..4, buffer, cx),
2843            buffer,
2844            &new_staged_text,
2845            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2846        );
2847    });
2848}
2849
2850#[gpui::test(iterations = 10)]
2851async fn test_git_branch_name(
2852    executor: BackgroundExecutor,
2853    cx_a: &mut TestAppContext,
2854    cx_b: &mut TestAppContext,
2855    cx_c: &mut TestAppContext,
2856) {
2857    let mut server = TestServer::start(executor.clone()).await;
2858    let client_a = server.create_client(cx_a, "user_a").await;
2859    let client_b = server.create_client(cx_b, "user_b").await;
2860    let client_c = server.create_client(cx_c, "user_c").await;
2861    server
2862        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2863        .await;
2864    let active_call_a = cx_a.read(ActiveCall::global);
2865
2866    client_a
2867        .fs()
2868        .insert_tree(
2869            "/dir",
2870            json!({
2871            ".git": {},
2872            }),
2873        )
2874        .await;
2875
2876    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2877    let project_id = active_call_a
2878        .update(cx_a, |call, cx| {
2879            call.share_project(project_local.clone(), cx)
2880        })
2881        .await
2882        .unwrap();
2883
2884    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
2885    client_a
2886        .fs()
2887        .set_branch_name(Path::new("/dir/.git"), Some("branch-1"));
2888
2889    // Wait for it to catch up to the new branch
2890    executor.run_until_parked();
2891
2892    #[track_caller]
2893    fn assert_branch(branch_name: Option<impl Into<String>>, project: &Project, cx: &App) {
2894        let branch_name = branch_name.map(Into::into);
2895        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
2896        assert_eq!(worktrees.len(), 1);
2897        let worktree = worktrees[0].clone();
2898        let snapshot = worktree.read(cx).snapshot();
2899        let repo = snapshot.repositories().first().unwrap();
2900        assert_eq!(
2901            repo.branch().map(|branch| branch.name.to_string()),
2902            branch_name
2903        );
2904    }
2905
2906    // Smoke test branch reading
2907
2908    project_local.read_with(cx_a, |project, cx| {
2909        assert_branch(Some("branch-1"), project, cx)
2910    });
2911
2912    project_remote.read_with(cx_b, |project, cx| {
2913        assert_branch(Some("branch-1"), project, cx)
2914    });
2915
2916    client_a
2917        .fs()
2918        .set_branch_name(Path::new("/dir/.git"), Some("branch-2"));
2919
2920    // Wait for buffer_local_a to receive it
2921    executor.run_until_parked();
2922
2923    // Smoke test branch reading
2924
2925    project_local.read_with(cx_a, |project, cx| {
2926        assert_branch(Some("branch-2"), project, cx)
2927    });
2928
2929    project_remote.read_with(cx_b, |project, cx| {
2930        assert_branch(Some("branch-2"), project, cx)
2931    });
2932
2933    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
2934    executor.run_until_parked();
2935
2936    project_remote_c.read_with(cx_c, |project, cx| {
2937        assert_branch(Some("branch-2"), project, cx)
2938    });
2939}
2940
2941#[gpui::test]
2942async fn test_git_status_sync(
2943    executor: BackgroundExecutor,
2944    cx_a: &mut TestAppContext,
2945    cx_b: &mut TestAppContext,
2946    cx_c: &mut TestAppContext,
2947) {
2948    let mut server = TestServer::start(executor.clone()).await;
2949    let client_a = server.create_client(cx_a, "user_a").await;
2950    let client_b = server.create_client(cx_b, "user_b").await;
2951    let client_c = server.create_client(cx_c, "user_c").await;
2952    server
2953        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2954        .await;
2955    let active_call_a = cx_a.read(ActiveCall::global);
2956
2957    client_a
2958        .fs()
2959        .insert_tree(
2960            "/dir",
2961            json!({
2962                ".git": {},
2963                "a.txt": "a",
2964                "b.txt": "b",
2965                "c.txt": "c",
2966            }),
2967        )
2968        .await;
2969
2970    // Initially, a.txt is uncommitted, but present in the index,
2971    // and b.txt is unmerged.
2972    client_a.fs().set_head_for_repo(
2973        "/dir/.git".as_ref(),
2974        &[("b.txt".into(), "B".into()), ("c.txt".into(), "c".into())],
2975    );
2976    client_a.fs().set_index_for_repo(
2977        "/dir/.git".as_ref(),
2978        &[
2979            ("a.txt".into(), "".into()),
2980            ("b.txt".into(), "B".into()),
2981            ("c.txt".into(), "c".into()),
2982        ],
2983    );
2984    client_a.fs().set_unmerged_paths_for_repo(
2985        "/dir/.git".as_ref(),
2986        &[(
2987            "b.txt".into(),
2988            UnmergedStatus {
2989                first_head: UnmergedStatusCode::Updated,
2990                second_head: UnmergedStatusCode::Deleted,
2991            },
2992        )],
2993    );
2994
2995    const A_STATUS_START: FileStatus = FileStatus::Tracked(TrackedStatus {
2996        index_status: StatusCode::Added,
2997        worktree_status: StatusCode::Modified,
2998    });
2999    const B_STATUS_START: FileStatus = FileStatus::Unmerged(UnmergedStatus {
3000        first_head: UnmergedStatusCode::Updated,
3001        second_head: UnmergedStatusCode::Deleted,
3002    });
3003
3004    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3005    let project_id = active_call_a
3006        .update(cx_a, |call, cx| {
3007            call.share_project(project_local.clone(), cx)
3008        })
3009        .await
3010        .unwrap();
3011
3012    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
3013
3014    // Wait for it to catch up to the new status
3015    executor.run_until_parked();
3016
3017    #[track_caller]
3018    fn assert_status(
3019        file: impl AsRef<Path>,
3020        status: Option<FileStatus>,
3021        project: &Project,
3022        cx: &App,
3023    ) {
3024        let file = file.as_ref();
3025        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
3026        assert_eq!(worktrees.len(), 1);
3027        let worktree = worktrees[0].clone();
3028        let snapshot = worktree.read(cx).snapshot();
3029        assert_eq!(snapshot.status_for_file(file), status);
3030    }
3031
3032    project_local.read_with(cx_a, |project, cx| {
3033        assert_status("a.txt", Some(A_STATUS_START), project, cx);
3034        assert_status("b.txt", Some(B_STATUS_START), project, cx);
3035        assert_status("c.txt", None, project, cx);
3036    });
3037
3038    project_remote.read_with(cx_b, |project, cx| {
3039        assert_status("a.txt", Some(A_STATUS_START), project, cx);
3040        assert_status("b.txt", Some(B_STATUS_START), project, cx);
3041        assert_status("c.txt", None, project, cx);
3042    });
3043
3044    const A_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3045        index_status: StatusCode::Added,
3046        worktree_status: StatusCode::Unmodified,
3047    });
3048    const B_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3049        index_status: StatusCode::Deleted,
3050        worktree_status: StatusCode::Added,
3051    });
3052    const C_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3053        index_status: StatusCode::Unmodified,
3054        worktree_status: StatusCode::Modified,
3055    });
3056
3057    // Delete b.txt from the index, mark conflict as resolved,
3058    // and modify c.txt in the working copy.
3059    client_a.fs().set_index_for_repo(
3060        "/dir/.git".as_ref(),
3061        &[("a.txt".into(), "a".into()), ("c.txt".into(), "c".into())],
3062    );
3063    client_a
3064        .fs()
3065        .set_unmerged_paths_for_repo("/dir/.git".as_ref(), &[]);
3066    client_a
3067        .fs()
3068        .atomic_write("/dir/c.txt".into(), "CC".into())
3069        .await
3070        .unwrap();
3071
3072    // Wait for buffer_local_a to receive it
3073    executor.run_until_parked();
3074
3075    // Smoke test status reading
3076    project_local.read_with(cx_a, |project, cx| {
3077        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3078        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3079        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3080    });
3081
3082    project_remote.read_with(cx_b, |project, cx| {
3083        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3084        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3085        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3086    });
3087
3088    // And synchronization while joining
3089    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
3090    executor.run_until_parked();
3091
3092    project_remote_c.read_with(cx_c, |project, cx| {
3093        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3094        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3095        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3096    });
3097}
3098
3099#[gpui::test(iterations = 10)]
3100async fn test_fs_operations(
3101    executor: BackgroundExecutor,
3102    cx_a: &mut TestAppContext,
3103    cx_b: &mut TestAppContext,
3104) {
3105    let mut server = TestServer::start(executor.clone()).await;
3106    let client_a = server.create_client(cx_a, "user_a").await;
3107    let client_b = server.create_client(cx_b, "user_b").await;
3108    server
3109        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3110        .await;
3111    let active_call_a = cx_a.read(ActiveCall::global);
3112
3113    client_a
3114        .fs()
3115        .insert_tree(
3116            "/dir",
3117            json!({
3118                "a.txt": "a-contents",
3119                "b.txt": "b-contents",
3120            }),
3121        )
3122        .await;
3123    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3124    let project_id = active_call_a
3125        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3126        .await
3127        .unwrap();
3128    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3129
3130    let worktree_a = project_a.read_with(cx_a, |project, cx| project.worktrees(cx).next().unwrap());
3131    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3132
3133    let entry = project_b
3134        .update(cx_b, |project, cx| {
3135            project.create_entry((worktree_id, "c.txt"), false, cx)
3136        })
3137        .await
3138        .unwrap()
3139        .to_included()
3140        .unwrap();
3141
3142    worktree_a.read_with(cx_a, |worktree, _| {
3143        assert_eq!(
3144            worktree
3145                .paths()
3146                .map(|p| p.to_string_lossy())
3147                .collect::<Vec<_>>(),
3148            ["a.txt", "b.txt", "c.txt"]
3149        );
3150    });
3151
3152    worktree_b.read_with(cx_b, |worktree, _| {
3153        assert_eq!(
3154            worktree
3155                .paths()
3156                .map(|p| p.to_string_lossy())
3157                .collect::<Vec<_>>(),
3158            ["a.txt", "b.txt", "c.txt"]
3159        );
3160    });
3161
3162    project_b
3163        .update(cx_b, |project, cx| {
3164            project.rename_entry(entry.id, Path::new("d.txt"), cx)
3165        })
3166        .await
3167        .unwrap()
3168        .to_included()
3169        .unwrap();
3170
3171    worktree_a.read_with(cx_a, |worktree, _| {
3172        assert_eq!(
3173            worktree
3174                .paths()
3175                .map(|p| p.to_string_lossy())
3176                .collect::<Vec<_>>(),
3177            ["a.txt", "b.txt", "d.txt"]
3178        );
3179    });
3180
3181    worktree_b.read_with(cx_b, |worktree, _| {
3182        assert_eq!(
3183            worktree
3184                .paths()
3185                .map(|p| p.to_string_lossy())
3186                .collect::<Vec<_>>(),
3187            ["a.txt", "b.txt", "d.txt"]
3188        );
3189    });
3190
3191    let dir_entry = project_b
3192        .update(cx_b, |project, cx| {
3193            project.create_entry((worktree_id, "DIR"), true, cx)
3194        })
3195        .await
3196        .unwrap()
3197        .to_included()
3198        .unwrap();
3199
3200    worktree_a.read_with(cx_a, |worktree, _| {
3201        assert_eq!(
3202            worktree
3203                .paths()
3204                .map(|p| p.to_string_lossy())
3205                .collect::<Vec<_>>(),
3206            ["DIR", "a.txt", "b.txt", "d.txt"]
3207        );
3208    });
3209
3210    worktree_b.read_with(cx_b, |worktree, _| {
3211        assert_eq!(
3212            worktree
3213                .paths()
3214                .map(|p| p.to_string_lossy())
3215                .collect::<Vec<_>>(),
3216            ["DIR", "a.txt", "b.txt", "d.txt"]
3217        );
3218    });
3219
3220    project_b
3221        .update(cx_b, |project, cx| {
3222            project.create_entry((worktree_id, "DIR/e.txt"), false, cx)
3223        })
3224        .await
3225        .unwrap()
3226        .to_included()
3227        .unwrap();
3228
3229    project_b
3230        .update(cx_b, |project, cx| {
3231            project.create_entry((worktree_id, "DIR/SUBDIR"), true, cx)
3232        })
3233        .await
3234        .unwrap()
3235        .to_included()
3236        .unwrap();
3237
3238    project_b
3239        .update(cx_b, |project, cx| {
3240            project.create_entry((worktree_id, "DIR/SUBDIR/f.txt"), false, cx)
3241        })
3242        .await
3243        .unwrap()
3244        .to_included()
3245        .unwrap();
3246
3247    worktree_a.read_with(cx_a, |worktree, _| {
3248        assert_eq!(
3249            worktree
3250                .paths()
3251                .map(|p| p.to_string_lossy())
3252                .collect::<Vec<_>>(),
3253            [
3254                "DIR",
3255                "DIR/SUBDIR",
3256                "DIR/SUBDIR/f.txt",
3257                "DIR/e.txt",
3258                "a.txt",
3259                "b.txt",
3260                "d.txt"
3261            ]
3262        );
3263    });
3264
3265    worktree_b.read_with(cx_b, |worktree, _| {
3266        assert_eq!(
3267            worktree
3268                .paths()
3269                .map(|p| p.to_string_lossy())
3270                .collect::<Vec<_>>(),
3271            [
3272                "DIR",
3273                "DIR/SUBDIR",
3274                "DIR/SUBDIR/f.txt",
3275                "DIR/e.txt",
3276                "a.txt",
3277                "b.txt",
3278                "d.txt"
3279            ]
3280        );
3281    });
3282
3283    project_b
3284        .update(cx_b, |project, cx| {
3285            project.copy_entry(entry.id, None, Path::new("f.txt"), cx)
3286        })
3287        .await
3288        .unwrap()
3289        .unwrap();
3290
3291    worktree_a.read_with(cx_a, |worktree, _| {
3292        assert_eq!(
3293            worktree
3294                .paths()
3295                .map(|p| p.to_string_lossy())
3296                .collect::<Vec<_>>(),
3297            [
3298                "DIR",
3299                "DIR/SUBDIR",
3300                "DIR/SUBDIR/f.txt",
3301                "DIR/e.txt",
3302                "a.txt",
3303                "b.txt",
3304                "d.txt",
3305                "f.txt"
3306            ]
3307        );
3308    });
3309
3310    worktree_b.read_with(cx_b, |worktree, _| {
3311        assert_eq!(
3312            worktree
3313                .paths()
3314                .map(|p| p.to_string_lossy())
3315                .collect::<Vec<_>>(),
3316            [
3317                "DIR",
3318                "DIR/SUBDIR",
3319                "DIR/SUBDIR/f.txt",
3320                "DIR/e.txt",
3321                "a.txt",
3322                "b.txt",
3323                "d.txt",
3324                "f.txt"
3325            ]
3326        );
3327    });
3328
3329    project_b
3330        .update(cx_b, |project, cx| {
3331            project.delete_entry(dir_entry.id, false, cx).unwrap()
3332        })
3333        .await
3334        .unwrap();
3335    executor.run_until_parked();
3336
3337    worktree_a.read_with(cx_a, |worktree, _| {
3338        assert_eq!(
3339            worktree
3340                .paths()
3341                .map(|p| p.to_string_lossy())
3342                .collect::<Vec<_>>(),
3343            ["a.txt", "b.txt", "d.txt", "f.txt"]
3344        );
3345    });
3346
3347    worktree_b.read_with(cx_b, |worktree, _| {
3348        assert_eq!(
3349            worktree
3350                .paths()
3351                .map(|p| p.to_string_lossy())
3352                .collect::<Vec<_>>(),
3353            ["a.txt", "b.txt", "d.txt", "f.txt"]
3354        );
3355    });
3356
3357    project_b
3358        .update(cx_b, |project, cx| {
3359            project.delete_entry(entry.id, false, cx).unwrap()
3360        })
3361        .await
3362        .unwrap();
3363
3364    worktree_a.read_with(cx_a, |worktree, _| {
3365        assert_eq!(
3366            worktree
3367                .paths()
3368                .map(|p| p.to_string_lossy())
3369                .collect::<Vec<_>>(),
3370            ["a.txt", "b.txt", "f.txt"]
3371        );
3372    });
3373
3374    worktree_b.read_with(cx_b, |worktree, _| {
3375        assert_eq!(
3376            worktree
3377                .paths()
3378                .map(|p| p.to_string_lossy())
3379                .collect::<Vec<_>>(),
3380            ["a.txt", "b.txt", "f.txt"]
3381        );
3382    });
3383}
3384
3385#[gpui::test(iterations = 10)]
3386async fn test_local_settings(
3387    executor: BackgroundExecutor,
3388    cx_a: &mut TestAppContext,
3389    cx_b: &mut TestAppContext,
3390) {
3391    let mut server = TestServer::start(executor.clone()).await;
3392    let client_a = server.create_client(cx_a, "user_a").await;
3393    let client_b = server.create_client(cx_b, "user_b").await;
3394    server
3395        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3396        .await;
3397    let active_call_a = cx_a.read(ActiveCall::global);
3398
3399    // As client A, open a project that contains some local settings files
3400    client_a
3401        .fs()
3402        .insert_tree(
3403            "/dir",
3404            json!({
3405                ".zed": {
3406                    "settings.json": r#"{ "tab_size": 2 }"#
3407                },
3408                "a": {
3409                    ".zed": {
3410                        "settings.json": r#"{ "tab_size": 8 }"#
3411                    },
3412                    "a.txt": "a-contents",
3413                },
3414                "b": {
3415                    "b.txt": "b-contents",
3416                }
3417            }),
3418        )
3419        .await;
3420    let (project_a, _) = client_a.build_local_project("/dir", cx_a).await;
3421    executor.run_until_parked();
3422    let project_id = active_call_a
3423        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3424        .await
3425        .unwrap();
3426    executor.run_until_parked();
3427
3428    // As client B, join that project and observe the local settings.
3429    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3430
3431    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3432    executor.run_until_parked();
3433    cx_b.read(|cx| {
3434        let store = cx.global::<SettingsStore>();
3435        assert_eq!(
3436            store
3437                .local_settings(worktree_b.read(cx).id())
3438                .collect::<Vec<_>>(),
3439            &[
3440                (Path::new("").into(), r#"{"tab_size":2}"#.to_string()),
3441                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3442            ]
3443        )
3444    });
3445
3446    // As client A, update a settings file. As Client B, see the changed settings.
3447    client_a
3448        .fs()
3449        .insert_file("/dir/.zed/settings.json", r#"{}"#.into())
3450        .await;
3451    executor.run_until_parked();
3452    cx_b.read(|cx| {
3453        let store = cx.global::<SettingsStore>();
3454        assert_eq!(
3455            store
3456                .local_settings(worktree_b.read(cx).id())
3457                .collect::<Vec<_>>(),
3458            &[
3459                (Path::new("").into(), r#"{}"#.to_string()),
3460                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3461            ]
3462        )
3463    });
3464
3465    // As client A, create and remove some settings files. As client B, see the changed settings.
3466    client_a
3467        .fs()
3468        .remove_file("/dir/.zed/settings.json".as_ref(), Default::default())
3469        .await
3470        .unwrap();
3471    client_a
3472        .fs()
3473        .create_dir("/dir/b/.zed".as_ref())
3474        .await
3475        .unwrap();
3476    client_a
3477        .fs()
3478        .insert_file("/dir/b/.zed/settings.json", r#"{"tab_size": 4}"#.into())
3479        .await;
3480    executor.run_until_parked();
3481    cx_b.read(|cx| {
3482        let store = cx.global::<SettingsStore>();
3483        assert_eq!(
3484            store
3485                .local_settings(worktree_b.read(cx).id())
3486                .collect::<Vec<_>>(),
3487            &[
3488                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3489                (Path::new("b").into(), r#"{"tab_size":4}"#.to_string()),
3490            ]
3491        )
3492    });
3493
3494    // As client B, disconnect.
3495    server.forbid_connections();
3496    server.disconnect_client(client_b.peer_id().unwrap());
3497
3498    // As client A, change and remove settings files while client B is disconnected.
3499    client_a
3500        .fs()
3501        .insert_file("/dir/a/.zed/settings.json", r#"{"hard_tabs":true}"#.into())
3502        .await;
3503    client_a
3504        .fs()
3505        .remove_file("/dir/b/.zed/settings.json".as_ref(), Default::default())
3506        .await
3507        .unwrap();
3508    executor.run_until_parked();
3509
3510    // As client B, reconnect and see the changed settings.
3511    server.allow_connections();
3512    executor.advance_clock(RECEIVE_TIMEOUT);
3513    cx_b.read(|cx| {
3514        let store = cx.global::<SettingsStore>();
3515        assert_eq!(
3516            store
3517                .local_settings(worktree_b.read(cx).id())
3518                .collect::<Vec<_>>(),
3519            &[(Path::new("a").into(), r#"{"hard_tabs":true}"#.to_string()),]
3520        )
3521    });
3522}
3523
3524#[gpui::test(iterations = 10)]
3525async fn test_buffer_conflict_after_save(
3526    executor: BackgroundExecutor,
3527    cx_a: &mut TestAppContext,
3528    cx_b: &mut TestAppContext,
3529) {
3530    let mut server = TestServer::start(executor.clone()).await;
3531    let client_a = server.create_client(cx_a, "user_a").await;
3532    let client_b = server.create_client(cx_b, "user_b").await;
3533    server
3534        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3535        .await;
3536    let active_call_a = cx_a.read(ActiveCall::global);
3537
3538    client_a
3539        .fs()
3540        .insert_tree(
3541            "/dir",
3542            json!({
3543                "a.txt": "a-contents",
3544            }),
3545        )
3546        .await;
3547    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3548    let project_id = active_call_a
3549        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3550        .await
3551        .unwrap();
3552    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3553
3554    // Open a buffer as client B
3555    let buffer_b = project_b
3556        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3557        .await
3558        .unwrap();
3559
3560    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "world ")], None, cx));
3561
3562    buffer_b.read_with(cx_b, |buf, _| {
3563        assert!(buf.is_dirty());
3564        assert!(!buf.has_conflict());
3565    });
3566
3567    project_b
3568        .update(cx_b, |project, cx| {
3569            project.save_buffer(buffer_b.clone(), cx)
3570        })
3571        .await
3572        .unwrap();
3573
3574    buffer_b.read_with(cx_b, |buffer_b, _| assert!(!buffer_b.is_dirty()));
3575
3576    buffer_b.read_with(cx_b, |buf, _| {
3577        assert!(!buf.has_conflict());
3578    });
3579
3580    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "hello ")], None, cx));
3581
3582    buffer_b.read_with(cx_b, |buf, _| {
3583        assert!(buf.is_dirty());
3584        assert!(!buf.has_conflict());
3585    });
3586}
3587
3588#[gpui::test(iterations = 10)]
3589async fn test_buffer_reloading(
3590    executor: BackgroundExecutor,
3591    cx_a: &mut TestAppContext,
3592    cx_b: &mut TestAppContext,
3593) {
3594    let mut server = TestServer::start(executor.clone()).await;
3595    let client_a = server.create_client(cx_a, "user_a").await;
3596    let client_b = server.create_client(cx_b, "user_b").await;
3597    server
3598        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3599        .await;
3600    let active_call_a = cx_a.read(ActiveCall::global);
3601
3602    client_a
3603        .fs()
3604        .insert_tree(
3605            "/dir",
3606            json!({
3607                "a.txt": "a\nb\nc",
3608            }),
3609        )
3610        .await;
3611    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3612    let project_id = active_call_a
3613        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3614        .await
3615        .unwrap();
3616    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3617
3618    // Open a buffer as client B
3619    let buffer_b = project_b
3620        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3621        .await
3622        .unwrap();
3623
3624    buffer_b.read_with(cx_b, |buf, _| {
3625        assert!(!buf.is_dirty());
3626        assert!(!buf.has_conflict());
3627        assert_eq!(buf.line_ending(), LineEnding::Unix);
3628    });
3629
3630    let new_contents = Rope::from("d\ne\nf");
3631    client_a
3632        .fs()
3633        .save("/dir/a.txt".as_ref(), &new_contents, LineEnding::Windows)
3634        .await
3635        .unwrap();
3636
3637    executor.run_until_parked();
3638
3639    buffer_b.read_with(cx_b, |buf, _| {
3640        assert_eq!(buf.text(), new_contents.to_string());
3641        assert!(!buf.is_dirty());
3642        assert!(!buf.has_conflict());
3643        assert_eq!(buf.line_ending(), LineEnding::Windows);
3644    });
3645}
3646
3647#[gpui::test(iterations = 10)]
3648async fn test_editing_while_guest_opens_buffer(
3649    executor: BackgroundExecutor,
3650    cx_a: &mut TestAppContext,
3651    cx_b: &mut TestAppContext,
3652) {
3653    let mut server = TestServer::start(executor.clone()).await;
3654    let client_a = server.create_client(cx_a, "user_a").await;
3655    let client_b = server.create_client(cx_b, "user_b").await;
3656    server
3657        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3658        .await;
3659    let active_call_a = cx_a.read(ActiveCall::global);
3660
3661    client_a
3662        .fs()
3663        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3664        .await;
3665    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3666    let project_id = active_call_a
3667        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3668        .await
3669        .unwrap();
3670    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3671
3672    // Open a buffer as client A
3673    let buffer_a = project_a
3674        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3675        .await
3676        .unwrap();
3677
3678    // Start opening the same buffer as client B
3679    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3680    let buffer_b = cx_b.executor().spawn(open_buffer);
3681
3682    // Edit the buffer as client A while client B is still opening it.
3683    cx_b.executor().simulate_random_delay().await;
3684    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "X")], None, cx));
3685    cx_b.executor().simulate_random_delay().await;
3686    buffer_a.update(cx_a, |buf, cx| buf.edit([(1..1, "Y")], None, cx));
3687
3688    let text = buffer_a.read_with(cx_a, |buf, _| buf.text());
3689    let buffer_b = buffer_b.await.unwrap();
3690    executor.run_until_parked();
3691
3692    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), text));
3693}
3694
3695#[gpui::test(iterations = 10)]
3696async fn test_leaving_worktree_while_opening_buffer(
3697    executor: BackgroundExecutor,
3698    cx_a: &mut TestAppContext,
3699    cx_b: &mut TestAppContext,
3700) {
3701    let mut server = TestServer::start(executor.clone()).await;
3702    let client_a = server.create_client(cx_a, "user_a").await;
3703    let client_b = server.create_client(cx_b, "user_b").await;
3704    server
3705        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3706        .await;
3707    let active_call_a = cx_a.read(ActiveCall::global);
3708
3709    client_a
3710        .fs()
3711        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3712        .await;
3713    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3714    let project_id = active_call_a
3715        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3716        .await
3717        .unwrap();
3718    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3719
3720    // See that a guest has joined as client A.
3721    executor.run_until_parked();
3722
3723    project_a.read_with(cx_a, |p, _| assert_eq!(p.collaborators().len(), 1));
3724
3725    // Begin opening a buffer as client B, but leave the project before the open completes.
3726    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3727    let buffer_b = cx_b.executor().spawn(open_buffer);
3728    cx_b.update(|_| drop(project_b));
3729    drop(buffer_b);
3730
3731    // See that the guest has left.
3732    executor.run_until_parked();
3733
3734    project_a.read_with(cx_a, |p, _| assert!(p.collaborators().is_empty()));
3735}
3736
3737#[gpui::test(iterations = 10)]
3738async fn test_canceling_buffer_opening(
3739    executor: BackgroundExecutor,
3740    cx_a: &mut TestAppContext,
3741    cx_b: &mut TestAppContext,
3742) {
3743    let mut server = TestServer::start(executor.clone()).await;
3744    let client_a = server.create_client(cx_a, "user_a").await;
3745    let client_b = server.create_client(cx_b, "user_b").await;
3746    server
3747        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3748        .await;
3749    let active_call_a = cx_a.read(ActiveCall::global);
3750
3751    client_a
3752        .fs()
3753        .insert_tree(
3754            "/dir",
3755            json!({
3756                "a.txt": "abc",
3757            }),
3758        )
3759        .await;
3760    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3761    let project_id = active_call_a
3762        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3763        .await
3764        .unwrap();
3765    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3766
3767    let buffer_a = project_a
3768        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3769        .await
3770        .unwrap();
3771
3772    // Open a buffer as client B but cancel after a random amount of time.
3773    let buffer_b = project_b.update(cx_b, |p, cx| {
3774        p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3775    });
3776    executor.simulate_random_delay().await;
3777    drop(buffer_b);
3778
3779    // Try opening the same buffer again as client B, and ensure we can
3780    // still do it despite the cancellation above.
3781    let buffer_b = project_b
3782        .update(cx_b, |p, cx| {
3783            p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3784        })
3785        .await
3786        .unwrap();
3787
3788    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), "abc"));
3789}
3790
3791#[gpui::test(iterations = 10)]
3792async fn test_leaving_project(
3793    executor: BackgroundExecutor,
3794    cx_a: &mut TestAppContext,
3795    cx_b: &mut TestAppContext,
3796    cx_c: &mut TestAppContext,
3797) {
3798    let mut server = TestServer::start(executor.clone()).await;
3799    let client_a = server.create_client(cx_a, "user_a").await;
3800    let client_b = server.create_client(cx_b, "user_b").await;
3801    let client_c = server.create_client(cx_c, "user_c").await;
3802    server
3803        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3804        .await;
3805    let active_call_a = cx_a.read(ActiveCall::global);
3806
3807    client_a
3808        .fs()
3809        .insert_tree(
3810            "/a",
3811            json!({
3812                "a.txt": "a-contents",
3813                "b.txt": "b-contents",
3814            }),
3815        )
3816        .await;
3817    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
3818    let project_id = active_call_a
3819        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3820        .await
3821        .unwrap();
3822    let project_b1 = client_b.join_remote_project(project_id, cx_b).await;
3823    let project_c = client_c.join_remote_project(project_id, cx_c).await;
3824
3825    // Client A sees that a guest has joined.
3826    executor.run_until_parked();
3827
3828    project_a.read_with(cx_a, |project, _| {
3829        assert_eq!(project.collaborators().len(), 2);
3830    });
3831
3832    project_b1.read_with(cx_b, |project, _| {
3833        assert_eq!(project.collaborators().len(), 2);
3834    });
3835
3836    project_c.read_with(cx_c, |project, _| {
3837        assert_eq!(project.collaborators().len(), 2);
3838    });
3839
3840    // Client B opens a buffer.
3841    let buffer_b1 = project_b1
3842        .update(cx_b, |project, cx| {
3843            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3844            project.open_buffer((worktree_id, "a.txt"), cx)
3845        })
3846        .await
3847        .unwrap();
3848
3849    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3850
3851    // Drop client B's project and ensure client A and client C observe client B leaving.
3852    cx_b.update(|_| drop(project_b1));
3853    executor.run_until_parked();
3854
3855    project_a.read_with(cx_a, |project, _| {
3856        assert_eq!(project.collaborators().len(), 1);
3857    });
3858
3859    project_c.read_with(cx_c, |project, _| {
3860        assert_eq!(project.collaborators().len(), 1);
3861    });
3862
3863    // Client B re-joins the project and can open buffers as before.
3864    let project_b2 = client_b.join_remote_project(project_id, cx_b).await;
3865    executor.run_until_parked();
3866
3867    project_a.read_with(cx_a, |project, _| {
3868        assert_eq!(project.collaborators().len(), 2);
3869    });
3870
3871    project_b2.read_with(cx_b, |project, _| {
3872        assert_eq!(project.collaborators().len(), 2);
3873    });
3874
3875    project_c.read_with(cx_c, |project, _| {
3876        assert_eq!(project.collaborators().len(), 2);
3877    });
3878
3879    let buffer_b2 = project_b2
3880        .update(cx_b, |project, cx| {
3881            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3882            project.open_buffer((worktree_id, "a.txt"), cx)
3883        })
3884        .await
3885        .unwrap();
3886
3887    buffer_b2.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3888
3889    project_a.read_with(cx_a, |project, _| {
3890        assert_eq!(project.collaborators().len(), 2);
3891    });
3892
3893    // Drop client B's connection and ensure client A and client C observe client B leaving.
3894    client_b.disconnect(&cx_b.to_async());
3895    executor.advance_clock(RECONNECT_TIMEOUT);
3896
3897    project_a.read_with(cx_a, |project, _| {
3898        assert_eq!(project.collaborators().len(), 1);
3899    });
3900
3901    project_b2.read_with(cx_b, |project, cx| {
3902        assert!(project.is_disconnected(cx));
3903    });
3904
3905    project_c.read_with(cx_c, |project, _| {
3906        assert_eq!(project.collaborators().len(), 1);
3907    });
3908
3909    // Client B can't join the project, unless they re-join the room.
3910    cx_b.spawn(|cx| {
3911        Project::in_room(
3912            project_id,
3913            client_b.app_state.client.clone(),
3914            client_b.user_store().clone(),
3915            client_b.language_registry().clone(),
3916            FakeFs::new(cx.background_executor().clone()),
3917            cx,
3918        )
3919    })
3920    .await
3921    .unwrap_err();
3922
3923    // Simulate connection loss for client C and ensure client A observes client C leaving the project.
3924    client_c.wait_for_current_user(cx_c).await;
3925    server.forbid_connections();
3926    server.disconnect_client(client_c.peer_id().unwrap());
3927    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
3928    executor.run_until_parked();
3929
3930    project_a.read_with(cx_a, |project, _| {
3931        assert_eq!(project.collaborators().len(), 0);
3932    });
3933
3934    project_b2.read_with(cx_b, |project, cx| {
3935        assert!(project.is_disconnected(cx));
3936    });
3937
3938    project_c.read_with(cx_c, |project, cx| {
3939        assert!(project.is_disconnected(cx));
3940    });
3941}
3942
3943#[gpui::test(iterations = 10)]
3944async fn test_collaborating_with_diagnostics(
3945    executor: BackgroundExecutor,
3946    cx_a: &mut TestAppContext,
3947    cx_b: &mut TestAppContext,
3948    cx_c: &mut TestAppContext,
3949) {
3950    let mut server = TestServer::start(executor.clone()).await;
3951    let client_a = server.create_client(cx_a, "user_a").await;
3952    let client_b = server.create_client(cx_b, "user_b").await;
3953    let client_c = server.create_client(cx_c, "user_c").await;
3954    server
3955        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3956        .await;
3957    let active_call_a = cx_a.read(ActiveCall::global);
3958
3959    client_a.language_registry().add(Arc::new(Language::new(
3960        LanguageConfig {
3961            name: "Rust".into(),
3962            matcher: LanguageMatcher {
3963                path_suffixes: vec!["rs".to_string()],
3964                ..Default::default()
3965            },
3966            ..Default::default()
3967        },
3968        Some(tree_sitter_rust::LANGUAGE.into()),
3969    )));
3970    let mut fake_language_servers = client_a
3971        .language_registry()
3972        .register_fake_lsp("Rust", Default::default());
3973
3974    // Share a project as client A
3975    client_a
3976        .fs()
3977        .insert_tree(
3978            "/a",
3979            json!({
3980                "a.rs": "let one = two",
3981                "other.rs": "",
3982            }),
3983        )
3984        .await;
3985    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
3986
3987    // Cause the language server to start.
3988    let _buffer = project_a
3989        .update(cx_a, |project, cx| {
3990            project.open_local_buffer_with_lsp("/a/other.rs", cx)
3991        })
3992        .await
3993        .unwrap();
3994
3995    // Simulate a language server reporting errors for a file.
3996    let mut fake_language_server = fake_language_servers.next().await.unwrap();
3997    fake_language_server
3998        .receive_notification::<lsp::notification::DidOpenTextDocument>()
3999        .await;
4000    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4001        &lsp::PublishDiagnosticsParams {
4002            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4003            version: None,
4004            diagnostics: vec![lsp::Diagnostic {
4005                severity: Some(lsp::DiagnosticSeverity::WARNING),
4006                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4007                message: "message 0".to_string(),
4008                ..Default::default()
4009            }],
4010        },
4011    );
4012
4013    // Client A shares the project and, simultaneously, the language server
4014    // publishes a diagnostic. This is done to ensure that the server always
4015    // observes the latest diagnostics for a worktree.
4016    let project_id = active_call_a
4017        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4018        .await
4019        .unwrap();
4020    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4021        &lsp::PublishDiagnosticsParams {
4022            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4023            version: None,
4024            diagnostics: vec![lsp::Diagnostic {
4025                severity: Some(lsp::DiagnosticSeverity::ERROR),
4026                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4027                message: "message 1".to_string(),
4028                ..Default::default()
4029            }],
4030        },
4031    );
4032
4033    // Join the worktree as client B.
4034    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4035
4036    // Wait for server to see the diagnostics update.
4037    executor.run_until_parked();
4038
4039    // Ensure client B observes the new diagnostics.
4040
4041    project_b.read_with(cx_b, |project, cx| {
4042        assert_eq!(
4043            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4044            &[(
4045                ProjectPath {
4046                    worktree_id,
4047                    path: Arc::from(Path::new("a.rs")),
4048                },
4049                LanguageServerId(0),
4050                DiagnosticSummary {
4051                    error_count: 1,
4052                    warning_count: 0,
4053                },
4054            )]
4055        )
4056    });
4057
4058    // Join project as client C and observe the diagnostics.
4059    let project_c = client_c.join_remote_project(project_id, cx_c).await;
4060    executor.run_until_parked();
4061    let project_c_diagnostic_summaries =
4062        Rc::new(RefCell::new(project_c.read_with(cx_c, |project, cx| {
4063            project.diagnostic_summaries(false, cx).collect::<Vec<_>>()
4064        })));
4065    project_c.update(cx_c, |_, cx| {
4066        let summaries = project_c_diagnostic_summaries.clone();
4067        cx.subscribe(&project_c, {
4068            move |p, _, event, cx| {
4069                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4070                    *summaries.borrow_mut() = p.diagnostic_summaries(false, cx).collect();
4071                }
4072            }
4073        })
4074        .detach();
4075    });
4076
4077    executor.run_until_parked();
4078    assert_eq!(
4079        project_c_diagnostic_summaries.borrow().as_slice(),
4080        &[(
4081            ProjectPath {
4082                worktree_id,
4083                path: Arc::from(Path::new("a.rs")),
4084            },
4085            LanguageServerId(0),
4086            DiagnosticSummary {
4087                error_count: 1,
4088                warning_count: 0,
4089            },
4090        )]
4091    );
4092
4093    // Simulate a language server reporting more errors for a file.
4094    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4095        &lsp::PublishDiagnosticsParams {
4096            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4097            version: None,
4098            diagnostics: vec![
4099                lsp::Diagnostic {
4100                    severity: Some(lsp::DiagnosticSeverity::ERROR),
4101                    range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4102                    message: "message 1".to_string(),
4103                    ..Default::default()
4104                },
4105                lsp::Diagnostic {
4106                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4107                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 13)),
4108                    message: "message 2".to_string(),
4109                    ..Default::default()
4110                },
4111            ],
4112        },
4113    );
4114
4115    // Clients B and C get the updated summaries
4116    executor.run_until_parked();
4117
4118    project_b.read_with(cx_b, |project, cx| {
4119        assert_eq!(
4120            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4121            [(
4122                ProjectPath {
4123                    worktree_id,
4124                    path: Arc::from(Path::new("a.rs")),
4125                },
4126                LanguageServerId(0),
4127                DiagnosticSummary {
4128                    error_count: 1,
4129                    warning_count: 1,
4130                },
4131            )]
4132        );
4133    });
4134
4135    project_c.read_with(cx_c, |project, cx| {
4136        assert_eq!(
4137            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4138            [(
4139                ProjectPath {
4140                    worktree_id,
4141                    path: Arc::from(Path::new("a.rs")),
4142                },
4143                LanguageServerId(0),
4144                DiagnosticSummary {
4145                    error_count: 1,
4146                    warning_count: 1,
4147                },
4148            )]
4149        );
4150    });
4151
4152    // Open the file with the errors on client B. They should be present.
4153    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4154    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4155
4156    buffer_b.read_with(cx_b, |buffer, _| {
4157        assert_eq!(
4158            buffer
4159                .snapshot()
4160                .diagnostics_in_range::<_, Point>(0..buffer.len(), false)
4161                .collect::<Vec<_>>(),
4162            &[
4163                DiagnosticEntry {
4164                    range: Point::new(0, 4)..Point::new(0, 7),
4165                    diagnostic: Diagnostic {
4166                        group_id: 2,
4167                        message: "message 1".to_string(),
4168                        severity: lsp::DiagnosticSeverity::ERROR,
4169                        is_primary: true,
4170                        ..Default::default()
4171                    }
4172                },
4173                DiagnosticEntry {
4174                    range: Point::new(0, 10)..Point::new(0, 13),
4175                    diagnostic: Diagnostic {
4176                        group_id: 3,
4177                        severity: lsp::DiagnosticSeverity::WARNING,
4178                        message: "message 2".to_string(),
4179                        is_primary: true,
4180                        ..Default::default()
4181                    }
4182                }
4183            ]
4184        );
4185    });
4186
4187    // Simulate a language server reporting no errors for a file.
4188    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4189        &lsp::PublishDiagnosticsParams {
4190            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4191            version: None,
4192            diagnostics: vec![],
4193        },
4194    );
4195    executor.run_until_parked();
4196
4197    project_a.read_with(cx_a, |project, cx| {
4198        assert_eq!(
4199            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4200            []
4201        )
4202    });
4203
4204    project_b.read_with(cx_b, |project, cx| {
4205        assert_eq!(
4206            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4207            []
4208        )
4209    });
4210
4211    project_c.read_with(cx_c, |project, cx| {
4212        assert_eq!(
4213            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4214            []
4215        )
4216    });
4217}
4218
4219#[gpui::test(iterations = 10)]
4220async fn test_collaborating_with_lsp_progress_updates_and_diagnostics_ordering(
4221    executor: BackgroundExecutor,
4222    cx_a: &mut TestAppContext,
4223    cx_b: &mut TestAppContext,
4224) {
4225    let mut server = TestServer::start(executor.clone()).await;
4226    let client_a = server.create_client(cx_a, "user_a").await;
4227    let client_b = server.create_client(cx_b, "user_b").await;
4228    server
4229        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4230        .await;
4231
4232    client_a.language_registry().add(rust_lang());
4233    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4234        "Rust",
4235        FakeLspAdapter {
4236            disk_based_diagnostics_progress_token: Some("the-disk-based-token".into()),
4237            disk_based_diagnostics_sources: vec!["the-disk-based-diagnostics-source".into()],
4238            ..Default::default()
4239        },
4240    );
4241
4242    let file_names = &["one.rs", "two.rs", "three.rs", "four.rs", "five.rs"];
4243    client_a
4244        .fs()
4245        .insert_tree(
4246            "/test",
4247            json!({
4248                "one.rs": "const ONE: usize = 1;",
4249                "two.rs": "const TWO: usize = 2;",
4250                "three.rs": "const THREE: usize = 3;",
4251                "four.rs": "const FOUR: usize = 3;",
4252                "five.rs": "const FIVE: usize = 3;",
4253            }),
4254        )
4255        .await;
4256
4257    let (project_a, worktree_id) = client_a.build_local_project("/test", cx_a).await;
4258
4259    // Share a project as client A
4260    let active_call_a = cx_a.read(ActiveCall::global);
4261    let project_id = active_call_a
4262        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4263        .await
4264        .unwrap();
4265
4266    // Join the project as client B and open all three files.
4267    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4268    let guest_buffers = futures::future::try_join_all(file_names.iter().map(|file_name| {
4269        project_b.update(cx_b, |p, cx| {
4270            p.open_buffer_with_lsp((worktree_id, file_name), cx)
4271        })
4272    }))
4273    .await
4274    .unwrap();
4275
4276    // Simulate a language server reporting errors for a file.
4277    let fake_language_server = fake_language_servers.next().await.unwrap();
4278    fake_language_server
4279        .request::<lsp::request::WorkDoneProgressCreate>(lsp::WorkDoneProgressCreateParams {
4280            token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4281        })
4282        .await
4283        .unwrap();
4284    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4285        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4286        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::Begin(
4287            lsp::WorkDoneProgressBegin {
4288                title: "Progress Began".into(),
4289                ..Default::default()
4290            },
4291        )),
4292    });
4293    for file_name in file_names {
4294        fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4295            &lsp::PublishDiagnosticsParams {
4296                uri: lsp::Url::from_file_path(Path::new("/test").join(file_name)).unwrap(),
4297                version: None,
4298                diagnostics: vec![lsp::Diagnostic {
4299                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4300                    source: Some("the-disk-based-diagnostics-source".into()),
4301                    range: lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
4302                    message: "message one".to_string(),
4303                    ..Default::default()
4304                }],
4305            },
4306        );
4307    }
4308    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4309        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4310        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::End(
4311            lsp::WorkDoneProgressEnd { message: None },
4312        )),
4313    });
4314
4315    // When the "disk base diagnostics finished" message is received, the buffers'
4316    // diagnostics are expected to be present.
4317    let disk_based_diagnostics_finished = Arc::new(AtomicBool::new(false));
4318    project_b.update(cx_b, {
4319        let project_b = project_b.clone();
4320        let disk_based_diagnostics_finished = disk_based_diagnostics_finished.clone();
4321        move |_, cx| {
4322            cx.subscribe(&project_b, move |_, _, event, cx| {
4323                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4324                    disk_based_diagnostics_finished.store(true, SeqCst);
4325                    for (buffer, _) in &guest_buffers {
4326                        assert_eq!(
4327                            buffer
4328                                .read(cx)
4329                                .snapshot()
4330                                .diagnostics_in_range::<_, usize>(0..5, false)
4331                                .count(),
4332                            1,
4333                            "expected a diagnostic for buffer {:?}",
4334                            buffer.read(cx).file().unwrap().path(),
4335                        );
4336                    }
4337                }
4338            })
4339            .detach();
4340        }
4341    });
4342
4343    executor.run_until_parked();
4344    assert!(disk_based_diagnostics_finished.load(SeqCst));
4345}
4346
4347#[gpui::test(iterations = 10)]
4348async fn test_reloading_buffer_manually(
4349    executor: BackgroundExecutor,
4350    cx_a: &mut TestAppContext,
4351    cx_b: &mut TestAppContext,
4352) {
4353    let mut server = TestServer::start(executor.clone()).await;
4354    let client_a = server.create_client(cx_a, "user_a").await;
4355    let client_b = server.create_client(cx_b, "user_b").await;
4356    server
4357        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4358        .await;
4359    let active_call_a = cx_a.read(ActiveCall::global);
4360
4361    client_a
4362        .fs()
4363        .insert_tree("/a", json!({ "a.rs": "let one = 1;" }))
4364        .await;
4365    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
4366    let buffer_a = project_a
4367        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4368        .await
4369        .unwrap();
4370    let project_id = active_call_a
4371        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4372        .await
4373        .unwrap();
4374
4375    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4376
4377    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4378    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4379    buffer_b.update(cx_b, |buffer, cx| {
4380        buffer.edit([(4..7, "six")], None, cx);
4381        buffer.edit([(10..11, "6")], None, cx);
4382        assert_eq!(buffer.text(), "let six = 6;");
4383        assert!(buffer.is_dirty());
4384        assert!(!buffer.has_conflict());
4385    });
4386    executor.run_until_parked();
4387
4388    buffer_a.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "let six = 6;"));
4389
4390    client_a
4391        .fs()
4392        .save(
4393            "/a/a.rs".as_ref(),
4394            &Rope::from("let seven = 7;"),
4395            LineEnding::Unix,
4396        )
4397        .await
4398        .unwrap();
4399    executor.run_until_parked();
4400
4401    buffer_a.read_with(cx_a, |buffer, _| assert!(buffer.has_conflict()));
4402
4403    buffer_b.read_with(cx_b, |buffer, _| assert!(buffer.has_conflict()));
4404
4405    project_b
4406        .update(cx_b, |project, cx| {
4407            project.reload_buffers(HashSet::from_iter([buffer_b.clone()]), true, cx)
4408        })
4409        .await
4410        .unwrap();
4411
4412    buffer_a.read_with(cx_a, |buffer, _| {
4413        assert_eq!(buffer.text(), "let seven = 7;");
4414        assert!(!buffer.is_dirty());
4415        assert!(!buffer.has_conflict());
4416    });
4417
4418    buffer_b.read_with(cx_b, |buffer, _| {
4419        assert_eq!(buffer.text(), "let seven = 7;");
4420        assert!(!buffer.is_dirty());
4421        assert!(!buffer.has_conflict());
4422    });
4423
4424    buffer_a.update(cx_a, |buffer, cx| {
4425        // Undoing on the host is a no-op when the reload was initiated by the guest.
4426        buffer.undo(cx);
4427        assert_eq!(buffer.text(), "let seven = 7;");
4428        assert!(!buffer.is_dirty());
4429        assert!(!buffer.has_conflict());
4430    });
4431    buffer_b.update(cx_b, |buffer, cx| {
4432        // Undoing on the guest rolls back the buffer to before it was reloaded but the conflict gets cleared.
4433        buffer.undo(cx);
4434        assert_eq!(buffer.text(), "let six = 6;");
4435        assert!(buffer.is_dirty());
4436        assert!(!buffer.has_conflict());
4437    });
4438}
4439
4440#[gpui::test(iterations = 10)]
4441async fn test_formatting_buffer(
4442    executor: BackgroundExecutor,
4443    cx_a: &mut TestAppContext,
4444    cx_b: &mut TestAppContext,
4445) {
4446    let mut server = TestServer::start(executor.clone()).await;
4447    let client_a = server.create_client(cx_a, "user_a").await;
4448    let client_b = server.create_client(cx_b, "user_b").await;
4449    server
4450        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4451        .await;
4452    let active_call_a = cx_a.read(ActiveCall::global);
4453
4454    client_a.language_registry().add(rust_lang());
4455    let mut fake_language_servers = client_a
4456        .language_registry()
4457        .register_fake_lsp("Rust", FakeLspAdapter::default());
4458
4459    // Here we insert a fake tree with a directory that exists on disk. This is needed
4460    // because later we'll invoke a command, which requires passing a working directory
4461    // that points to a valid location on disk.
4462    let directory = env::current_dir().unwrap();
4463    client_a
4464        .fs()
4465        .insert_tree(&directory, json!({ "a.rs": "let one = \"two\"" }))
4466        .await;
4467    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4468    let project_id = active_call_a
4469        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4470        .await
4471        .unwrap();
4472    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4473
4474    let buffer_b = project_b
4475        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4476        .await
4477        .unwrap();
4478
4479    let _handle = project_b.update(cx_b, |project, cx| {
4480        project.register_buffer_with_language_servers(&buffer_b, cx)
4481    });
4482    let fake_language_server = fake_language_servers.next().await.unwrap();
4483    fake_language_server.set_request_handler::<lsp::request::Formatting, _, _>(|_, _| async move {
4484        Ok(Some(vec![
4485            lsp::TextEdit {
4486                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
4487                new_text: "h".to_string(),
4488            },
4489            lsp::TextEdit {
4490                range: lsp::Range::new(lsp::Position::new(0, 7), lsp::Position::new(0, 7)),
4491                new_text: "y".to_string(),
4492            },
4493        ]))
4494    });
4495
4496    project_b
4497        .update(cx_b, |project, cx| {
4498            project.format(
4499                HashSet::from_iter([buffer_b.clone()]),
4500                LspFormatTarget::Buffers,
4501                true,
4502                FormatTrigger::Save,
4503                cx,
4504            )
4505        })
4506        .await
4507        .unwrap();
4508
4509    // The edits from the LSP are applied, and a final newline is added.
4510    assert_eq!(
4511        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4512        "let honey = \"two\"\n"
4513    );
4514
4515    // Ensure buffer can be formatted using an external command. Notice how the
4516    // host's configuration is honored as opposed to using the guest's settings.
4517    cx_a.update(|cx| {
4518        SettingsStore::update_global(cx, |store, cx| {
4519            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4520                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4521                    vec![Formatter::External {
4522                        command: "awk".into(),
4523                        arguments: Some(vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into()),
4524                    }]
4525                    .into(),
4526                )));
4527            });
4528        });
4529    });
4530
4531    executor.allow_parking();
4532    project_b
4533        .update(cx_b, |project, cx| {
4534            project.format(
4535                HashSet::from_iter([buffer_b.clone()]),
4536                LspFormatTarget::Buffers,
4537                true,
4538                FormatTrigger::Save,
4539                cx,
4540            )
4541        })
4542        .await
4543        .unwrap();
4544    assert_eq!(
4545        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4546        format!("let honey = \"{}/a.rs\"\n", directory.to_str().unwrap())
4547    );
4548}
4549
4550#[gpui::test(iterations = 10)]
4551async fn test_prettier_formatting_buffer(
4552    executor: BackgroundExecutor,
4553    cx_a: &mut TestAppContext,
4554    cx_b: &mut TestAppContext,
4555) {
4556    let mut server = TestServer::start(executor.clone()).await;
4557    let client_a = server.create_client(cx_a, "user_a").await;
4558    let client_b = server.create_client(cx_b, "user_b").await;
4559    server
4560        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4561        .await;
4562    let active_call_a = cx_a.read(ActiveCall::global);
4563
4564    let test_plugin = "test_plugin";
4565
4566    client_a.language_registry().add(Arc::new(Language::new(
4567        LanguageConfig {
4568            name: "TypeScript".into(),
4569            matcher: LanguageMatcher {
4570                path_suffixes: vec!["ts".to_string()],
4571                ..Default::default()
4572            },
4573            ..Default::default()
4574        },
4575        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
4576    )));
4577    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4578        "TypeScript",
4579        FakeLspAdapter {
4580            prettier_plugins: vec![test_plugin],
4581            ..Default::default()
4582        },
4583    );
4584
4585    // Here we insert a fake tree with a directory that exists on disk. This is needed
4586    // because later we'll invoke a command, which requires passing a working directory
4587    // that points to a valid location on disk.
4588    let directory = env::current_dir().unwrap();
4589    let buffer_text = "let one = \"two\"";
4590    client_a
4591        .fs()
4592        .insert_tree(&directory, json!({ "a.ts": buffer_text }))
4593        .await;
4594    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4595    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
4596    let open_buffer = project_a.update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.ts"), cx));
4597    let buffer_a = cx_a.executor().spawn(open_buffer).await.unwrap();
4598
4599    let project_id = active_call_a
4600        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4601        .await
4602        .unwrap();
4603    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4604    let (buffer_b, _) = project_b
4605        .update(cx_b, |p, cx| {
4606            p.open_buffer_with_lsp((worktree_id, "a.ts"), cx)
4607        })
4608        .await
4609        .unwrap();
4610
4611    cx_a.update(|cx| {
4612        SettingsStore::update_global(cx, |store, cx| {
4613            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4614                file.defaults.formatter = Some(SelectedFormatter::Auto);
4615                file.defaults.prettier = Some(PrettierSettings {
4616                    allowed: true,
4617                    ..PrettierSettings::default()
4618                });
4619            });
4620        });
4621    });
4622    cx_b.update(|cx| {
4623        SettingsStore::update_global(cx, |store, cx| {
4624            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4625                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4626                    vec![Formatter::LanguageServer { name: None }].into(),
4627                )));
4628                file.defaults.prettier = Some(PrettierSettings {
4629                    allowed: true,
4630                    ..PrettierSettings::default()
4631                });
4632            });
4633        });
4634    });
4635    let fake_language_server = fake_language_servers.next().await.unwrap();
4636    fake_language_server.set_request_handler::<lsp::request::Formatting, _, _>(|_, _| async move {
4637        panic!(
4638            "Unexpected: prettier should be preferred since it's enabled and language supports it"
4639        )
4640    });
4641
4642    project_b
4643        .update(cx_b, |project, cx| {
4644            project.format(
4645                HashSet::from_iter([buffer_b.clone()]),
4646                LspFormatTarget::Buffers,
4647                true,
4648                FormatTrigger::Save,
4649                cx,
4650            )
4651        })
4652        .await
4653        .unwrap();
4654
4655    executor.run_until_parked();
4656    assert_eq!(
4657        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4658        buffer_text.to_string() + "\n" + prettier_format_suffix,
4659        "Prettier formatting was not applied to client buffer after client's request"
4660    );
4661
4662    project_a
4663        .update(cx_a, |project, cx| {
4664            project.format(
4665                HashSet::from_iter([buffer_a.clone()]),
4666                LspFormatTarget::Buffers,
4667                true,
4668                FormatTrigger::Manual,
4669                cx,
4670            )
4671        })
4672        .await
4673        .unwrap();
4674
4675    executor.run_until_parked();
4676    assert_eq!(
4677        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4678        buffer_text.to_string() + "\n" + prettier_format_suffix + "\n" + prettier_format_suffix,
4679        "Prettier formatting was not applied to client buffer after host's request"
4680    );
4681}
4682
4683#[gpui::test(iterations = 10)]
4684async fn test_definition(
4685    executor: BackgroundExecutor,
4686    cx_a: &mut TestAppContext,
4687    cx_b: &mut TestAppContext,
4688) {
4689    let mut server = TestServer::start(executor.clone()).await;
4690    let client_a = server.create_client(cx_a, "user_a").await;
4691    let client_b = server.create_client(cx_b, "user_b").await;
4692    server
4693        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4694        .await;
4695    let active_call_a = cx_a.read(ActiveCall::global);
4696
4697    let mut fake_language_servers = client_a
4698        .language_registry()
4699        .register_fake_lsp("Rust", Default::default());
4700    client_a.language_registry().add(rust_lang());
4701
4702    client_a
4703        .fs()
4704        .insert_tree(
4705            "/root",
4706            json!({
4707                "dir-1": {
4708                    "a.rs": "const ONE: usize = b::TWO + b::THREE;",
4709                },
4710                "dir-2": {
4711                    "b.rs": "const TWO: c::T2 = 2;\nconst THREE: usize = 3;",
4712                    "c.rs": "type T2 = usize;",
4713                }
4714            }),
4715        )
4716        .await;
4717    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4718    let project_id = active_call_a
4719        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4720        .await
4721        .unwrap();
4722    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4723
4724    // Open the file on client B.
4725    let (buffer_b, _handle) = project_b
4726        .update(cx_b, |p, cx| {
4727            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
4728        })
4729        .await
4730        .unwrap();
4731
4732    // Request the definition of a symbol as the guest.
4733    let fake_language_server = fake_language_servers.next().await.unwrap();
4734    fake_language_server.set_request_handler::<lsp::request::GotoDefinition, _, _>(
4735        |_, _| async move {
4736            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4737                lsp::Location::new(
4738                    lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4739                    lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
4740                ),
4741            )))
4742        },
4743    );
4744
4745    let definitions_1 = project_b
4746        .update(cx_b, |p, cx| p.definition(&buffer_b, 23, cx))
4747        .await
4748        .unwrap();
4749    cx_b.read(|cx| {
4750        assert_eq!(definitions_1.len(), 1);
4751        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4752        let target_buffer = definitions_1[0].target.buffer.read(cx);
4753        assert_eq!(
4754            target_buffer.text(),
4755            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4756        );
4757        assert_eq!(
4758            definitions_1[0].target.range.to_point(target_buffer),
4759            Point::new(0, 6)..Point::new(0, 9)
4760        );
4761    });
4762
4763    // Try getting more definitions for the same buffer, ensuring the buffer gets reused from
4764    // the previous call to `definition`.
4765    fake_language_server.set_request_handler::<lsp::request::GotoDefinition, _, _>(
4766        |_, _| async move {
4767            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4768                lsp::Location::new(
4769                    lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4770                    lsp::Range::new(lsp::Position::new(1, 6), lsp::Position::new(1, 11)),
4771                ),
4772            )))
4773        },
4774    );
4775
4776    let definitions_2 = project_b
4777        .update(cx_b, |p, cx| p.definition(&buffer_b, 33, cx))
4778        .await
4779        .unwrap();
4780    cx_b.read(|cx| {
4781        assert_eq!(definitions_2.len(), 1);
4782        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4783        let target_buffer = definitions_2[0].target.buffer.read(cx);
4784        assert_eq!(
4785            target_buffer.text(),
4786            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4787        );
4788        assert_eq!(
4789            definitions_2[0].target.range.to_point(target_buffer),
4790            Point::new(1, 6)..Point::new(1, 11)
4791        );
4792    });
4793    assert_eq!(
4794        definitions_1[0].target.buffer,
4795        definitions_2[0].target.buffer
4796    );
4797
4798    fake_language_server.set_request_handler::<lsp::request::GotoTypeDefinition, _, _>(
4799        |req, _| async move {
4800            assert_eq!(
4801                req.text_document_position_params.position,
4802                lsp::Position::new(0, 7)
4803            );
4804            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4805                lsp::Location::new(
4806                    lsp::Url::from_file_path("/root/dir-2/c.rs").unwrap(),
4807                    lsp::Range::new(lsp::Position::new(0, 5), lsp::Position::new(0, 7)),
4808                ),
4809            )))
4810        },
4811    );
4812
4813    let type_definitions = project_b
4814        .update(cx_b, |p, cx| p.type_definition(&buffer_b, 7, cx))
4815        .await
4816        .unwrap();
4817    cx_b.read(|cx| {
4818        assert_eq!(type_definitions.len(), 1);
4819        let target_buffer = type_definitions[0].target.buffer.read(cx);
4820        assert_eq!(target_buffer.text(), "type T2 = usize;");
4821        assert_eq!(
4822            type_definitions[0].target.range.to_point(target_buffer),
4823            Point::new(0, 5)..Point::new(0, 7)
4824        );
4825    });
4826}
4827
4828#[gpui::test(iterations = 10)]
4829async fn test_references(
4830    executor: BackgroundExecutor,
4831    cx_a: &mut TestAppContext,
4832    cx_b: &mut TestAppContext,
4833) {
4834    let mut server = TestServer::start(executor.clone()).await;
4835    let client_a = server.create_client(cx_a, "user_a").await;
4836    let client_b = server.create_client(cx_b, "user_b").await;
4837    server
4838        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4839        .await;
4840    let active_call_a = cx_a.read(ActiveCall::global);
4841
4842    client_a.language_registry().add(rust_lang());
4843    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4844        "Rust",
4845        FakeLspAdapter {
4846            name: "my-fake-lsp-adapter",
4847            capabilities: lsp::ServerCapabilities {
4848                references_provider: Some(lsp::OneOf::Left(true)),
4849                ..Default::default()
4850            },
4851            ..Default::default()
4852        },
4853    );
4854
4855    client_a
4856        .fs()
4857        .insert_tree(
4858            "/root",
4859            json!({
4860                "dir-1": {
4861                    "one.rs": "const ONE: usize = 1;",
4862                    "two.rs": "const TWO: usize = one::ONE + one::ONE;",
4863                },
4864                "dir-2": {
4865                    "three.rs": "const THREE: usize = two::TWO + one::ONE;",
4866                }
4867            }),
4868        )
4869        .await;
4870    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4871    let project_id = active_call_a
4872        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4873        .await
4874        .unwrap();
4875    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4876
4877    // Open the file on client B.
4878    let (buffer_b, _handle) = project_b
4879        .update(cx_b, |p, cx| {
4880            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
4881        })
4882        .await
4883        .unwrap();
4884
4885    // Request references to a symbol as the guest.
4886    let fake_language_server = fake_language_servers.next().await.unwrap();
4887    let (lsp_response_tx, rx) = mpsc::unbounded::<Result<Option<Vec<lsp::Location>>>>();
4888    fake_language_server.set_request_handler::<lsp::request::References, _, _>({
4889        let rx = Arc::new(Mutex::new(Some(rx)));
4890        move |params, _| {
4891            assert_eq!(
4892                params.text_document_position.text_document.uri.as_str(),
4893                "file:///root/dir-1/one.rs"
4894            );
4895            let rx = rx.clone();
4896            async move {
4897                let mut response_rx = rx.lock().take().unwrap();
4898                let result = response_rx.next().await.unwrap();
4899                *rx.lock() = Some(response_rx);
4900                result
4901            }
4902        }
4903    });
4904
4905    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4906
4907    // User is informed that a request is pending.
4908    executor.run_until_parked();
4909    project_b.read_with(cx_b, |project, cx| {
4910        let status = project.language_server_statuses(cx).next().unwrap().1;
4911        assert_eq!(status.name, "my-fake-lsp-adapter");
4912        assert_eq!(
4913            status.pending_work.values().next().unwrap().message,
4914            Some("Finding references...".into())
4915        );
4916    });
4917
4918    // Cause the language server to respond.
4919    lsp_response_tx
4920        .unbounded_send(Ok(Some(vec![
4921            lsp::Location {
4922                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4923                range: lsp::Range::new(lsp::Position::new(0, 24), lsp::Position::new(0, 27)),
4924            },
4925            lsp::Location {
4926                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4927                range: lsp::Range::new(lsp::Position::new(0, 35), lsp::Position::new(0, 38)),
4928            },
4929            lsp::Location {
4930                uri: lsp::Url::from_file_path("/root/dir-2/three.rs").unwrap(),
4931                range: lsp::Range::new(lsp::Position::new(0, 37), lsp::Position::new(0, 40)),
4932            },
4933        ])))
4934        .unwrap();
4935
4936    let references = references.await.unwrap();
4937    executor.run_until_parked();
4938    project_b.read_with(cx_b, |project, cx| {
4939        // User is informed that a request is no longer pending.
4940        let status = project.language_server_statuses(cx).next().unwrap().1;
4941        assert!(status.pending_work.is_empty());
4942
4943        assert_eq!(references.len(), 3);
4944        assert_eq!(project.worktrees(cx).count(), 2);
4945
4946        let two_buffer = references[0].buffer.read(cx);
4947        let three_buffer = references[2].buffer.read(cx);
4948        assert_eq!(
4949            two_buffer.file().unwrap().path().as_ref(),
4950            Path::new("two.rs")
4951        );
4952        assert_eq!(references[1].buffer, references[0].buffer);
4953        assert_eq!(
4954            three_buffer.file().unwrap().full_path(cx),
4955            Path::new("/root/dir-2/three.rs")
4956        );
4957
4958        assert_eq!(references[0].range.to_offset(two_buffer), 24..27);
4959        assert_eq!(references[1].range.to_offset(two_buffer), 35..38);
4960        assert_eq!(references[2].range.to_offset(three_buffer), 37..40);
4961    });
4962
4963    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4964
4965    // User is informed that a request is pending.
4966    executor.run_until_parked();
4967    project_b.read_with(cx_b, |project, cx| {
4968        let status = project.language_server_statuses(cx).next().unwrap().1;
4969        assert_eq!(status.name, "my-fake-lsp-adapter");
4970        assert_eq!(
4971            status.pending_work.values().next().unwrap().message,
4972            Some("Finding references...".into())
4973        );
4974    });
4975
4976    // Cause the LSP request to fail.
4977    lsp_response_tx
4978        .unbounded_send(Err(anyhow!("can't find references")))
4979        .unwrap();
4980    references.await.unwrap_err();
4981
4982    // User is informed that the request is no longer pending.
4983    executor.run_until_parked();
4984    project_b.read_with(cx_b, |project, cx| {
4985        let status = project.language_server_statuses(cx).next().unwrap().1;
4986        assert!(status.pending_work.is_empty());
4987    });
4988}
4989
4990#[gpui::test(iterations = 10)]
4991async fn test_project_search(
4992    executor: BackgroundExecutor,
4993    cx_a: &mut TestAppContext,
4994    cx_b: &mut TestAppContext,
4995) {
4996    let mut server = TestServer::start(executor.clone()).await;
4997    let client_a = server.create_client(cx_a, "user_a").await;
4998    let client_b = server.create_client(cx_b, "user_b").await;
4999    server
5000        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5001        .await;
5002    let active_call_a = cx_a.read(ActiveCall::global);
5003
5004    client_a
5005        .fs()
5006        .insert_tree(
5007            "/root",
5008            json!({
5009                "dir-1": {
5010                    "a": "hello world",
5011                    "b": "goodnight moon",
5012                    "c": "a world of goo",
5013                    "d": "world champion of clown world",
5014                },
5015                "dir-2": {
5016                    "e": "disney world is fun",
5017                }
5018            }),
5019        )
5020        .await;
5021    let (project_a, _) = client_a.build_local_project("/root/dir-1", cx_a).await;
5022    let (worktree_2, _) = project_a
5023        .update(cx_a, |p, cx| {
5024            p.find_or_create_worktree("/root/dir-2", true, cx)
5025        })
5026        .await
5027        .unwrap();
5028    worktree_2
5029        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
5030        .await;
5031    let project_id = active_call_a
5032        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5033        .await
5034        .unwrap();
5035
5036    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5037
5038    // Perform a search as the guest.
5039    let mut results = HashMap::default();
5040    let search_rx = project_b.update(cx_b, |project, cx| {
5041        project.search(
5042            SearchQuery::text(
5043                "world",
5044                false,
5045                false,
5046                false,
5047                Default::default(),
5048                Default::default(),
5049                None,
5050            )
5051            .unwrap(),
5052            cx,
5053        )
5054    });
5055    while let Ok(result) = search_rx.recv().await {
5056        match result {
5057            SearchResult::Buffer { buffer, ranges } => {
5058                results.entry(buffer).or_insert(ranges);
5059            }
5060            SearchResult::LimitReached => {
5061                panic!("Unexpectedly reached search limit in tests. If you do want to assert limit-reached, change this panic call.")
5062            }
5063        };
5064    }
5065
5066    let mut ranges_by_path = results
5067        .into_iter()
5068        .map(|(buffer, ranges)| {
5069            buffer.read_with(cx_b, |buffer, cx| {
5070                let path = buffer.file().unwrap().full_path(cx);
5071                let offset_ranges = ranges
5072                    .into_iter()
5073                    .map(|range| range.to_offset(buffer))
5074                    .collect::<Vec<_>>();
5075                (path, offset_ranges)
5076            })
5077        })
5078        .collect::<Vec<_>>();
5079    ranges_by_path.sort_by_key(|(path, _)| path.clone());
5080
5081    assert_eq!(
5082        ranges_by_path,
5083        &[
5084            (PathBuf::from("dir-1/a"), vec![6..11]),
5085            (PathBuf::from("dir-1/c"), vec![2..7]),
5086            (PathBuf::from("dir-1/d"), vec![0..5, 24..29]),
5087            (PathBuf::from("dir-2/e"), vec![7..12]),
5088        ]
5089    );
5090}
5091
5092#[gpui::test(iterations = 10)]
5093async fn test_document_highlights(
5094    executor: BackgroundExecutor,
5095    cx_a: &mut TestAppContext,
5096    cx_b: &mut TestAppContext,
5097) {
5098    let mut server = TestServer::start(executor.clone()).await;
5099    let client_a = server.create_client(cx_a, "user_a").await;
5100    let client_b = server.create_client(cx_b, "user_b").await;
5101    server
5102        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5103        .await;
5104    let active_call_a = cx_a.read(ActiveCall::global);
5105
5106    client_a
5107        .fs()
5108        .insert_tree(
5109            "/root-1",
5110            json!({
5111                "main.rs": "fn double(number: i32) -> i32 { number + number }",
5112            }),
5113        )
5114        .await;
5115
5116    let mut fake_language_servers = client_a
5117        .language_registry()
5118        .register_fake_lsp("Rust", Default::default());
5119    client_a.language_registry().add(rust_lang());
5120
5121    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5122    let project_id = active_call_a
5123        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5124        .await
5125        .unwrap();
5126    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5127
5128    // Open the file on client B.
5129    let (buffer_b, _handle) = project_b
5130        .update(cx_b, |p, cx| {
5131            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5132        })
5133        .await
5134        .unwrap();
5135
5136    // Request document highlights as the guest.
5137    let fake_language_server = fake_language_servers.next().await.unwrap();
5138    fake_language_server.set_request_handler::<lsp::request::DocumentHighlightRequest, _, _>(
5139        |params, _| async move {
5140            assert_eq!(
5141                params
5142                    .text_document_position_params
5143                    .text_document
5144                    .uri
5145                    .as_str(),
5146                "file:///root-1/main.rs"
5147            );
5148            assert_eq!(
5149                params.text_document_position_params.position,
5150                lsp::Position::new(0, 34)
5151            );
5152            Ok(Some(vec![
5153                lsp::DocumentHighlight {
5154                    kind: Some(lsp::DocumentHighlightKind::WRITE),
5155                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 16)),
5156                },
5157                lsp::DocumentHighlight {
5158                    kind: Some(lsp::DocumentHighlightKind::READ),
5159                    range: lsp::Range::new(lsp::Position::new(0, 32), lsp::Position::new(0, 38)),
5160                },
5161                lsp::DocumentHighlight {
5162                    kind: Some(lsp::DocumentHighlightKind::READ),
5163                    range: lsp::Range::new(lsp::Position::new(0, 41), lsp::Position::new(0, 47)),
5164                },
5165            ]))
5166        },
5167    );
5168
5169    let highlights = project_b
5170        .update(cx_b, |p, cx| p.document_highlights(&buffer_b, 34, cx))
5171        .await
5172        .unwrap();
5173
5174    buffer_b.read_with(cx_b, |buffer, _| {
5175        let snapshot = buffer.snapshot();
5176
5177        let highlights = highlights
5178            .into_iter()
5179            .map(|highlight| (highlight.kind, highlight.range.to_offset(&snapshot)))
5180            .collect::<Vec<_>>();
5181        assert_eq!(
5182            highlights,
5183            &[
5184                (lsp::DocumentHighlightKind::WRITE, 10..16),
5185                (lsp::DocumentHighlightKind::READ, 32..38),
5186                (lsp::DocumentHighlightKind::READ, 41..47)
5187            ]
5188        )
5189    });
5190}
5191
5192#[gpui::test(iterations = 10)]
5193async fn test_lsp_hover(
5194    executor: BackgroundExecutor,
5195    cx_a: &mut TestAppContext,
5196    cx_b: &mut TestAppContext,
5197) {
5198    let mut server = TestServer::start(executor.clone()).await;
5199    let client_a = server.create_client(cx_a, "user_a").await;
5200    let client_b = server.create_client(cx_b, "user_b").await;
5201    server
5202        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5203        .await;
5204    let active_call_a = cx_a.read(ActiveCall::global);
5205
5206    client_a
5207        .fs()
5208        .insert_tree(
5209            "/root-1",
5210            json!({
5211                "main.rs": "use std::collections::HashMap;",
5212            }),
5213        )
5214        .await;
5215
5216    client_a.language_registry().add(rust_lang());
5217    let language_server_names = ["rust-analyzer", "CrabLang-ls"];
5218    let mut language_servers = [
5219        client_a.language_registry().register_fake_lsp(
5220            "Rust",
5221            FakeLspAdapter {
5222                name: "rust-analyzer",
5223                capabilities: lsp::ServerCapabilities {
5224                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5225                    ..lsp::ServerCapabilities::default()
5226                },
5227                ..FakeLspAdapter::default()
5228            },
5229        ),
5230        client_a.language_registry().register_fake_lsp(
5231            "Rust",
5232            FakeLspAdapter {
5233                name: "CrabLang-ls",
5234                capabilities: lsp::ServerCapabilities {
5235                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5236                    ..lsp::ServerCapabilities::default()
5237                },
5238                ..FakeLspAdapter::default()
5239            },
5240        ),
5241    ];
5242
5243    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5244    let project_id = active_call_a
5245        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5246        .await
5247        .unwrap();
5248    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5249
5250    // Open the file as the guest
5251    let (buffer_b, _handle) = project_b
5252        .update(cx_b, |p, cx| {
5253            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5254        })
5255        .await
5256        .unwrap();
5257
5258    let mut servers_with_hover_requests = HashMap::default();
5259    for i in 0..language_server_names.len() {
5260        let new_server = language_servers[i].next().await.unwrap_or_else(|| {
5261            panic!(
5262                "Failed to get language server #{i} with name {}",
5263                &language_server_names[i]
5264            )
5265        });
5266        let new_server_name = new_server.server.name();
5267        assert!(
5268            !servers_with_hover_requests.contains_key(&new_server_name),
5269            "Unexpected: initialized server with the same name twice. Name: `{new_server_name}`"
5270        );
5271        match new_server_name.as_ref() {
5272            "CrabLang-ls" => {
5273                servers_with_hover_requests.insert(
5274                    new_server_name.clone(),
5275                    new_server.set_request_handler::<lsp::request::HoverRequest, _, _>(
5276                        move |params, _| {
5277                            assert_eq!(
5278                                params
5279                                    .text_document_position_params
5280                                    .text_document
5281                                    .uri
5282                                    .as_str(),
5283                                "file:///root-1/main.rs"
5284                            );
5285                            let name = new_server_name.clone();
5286                            async move {
5287                                Ok(Some(lsp::Hover {
5288                                    contents: lsp::HoverContents::Scalar(
5289                                        lsp::MarkedString::String(format!("{name} hover")),
5290                                    ),
5291                                    range: None,
5292                                }))
5293                            }
5294                        },
5295                    ),
5296                );
5297            }
5298            "rust-analyzer" => {
5299                servers_with_hover_requests.insert(
5300                    new_server_name.clone(),
5301                    new_server.set_request_handler::<lsp::request::HoverRequest, _, _>(
5302                        |params, _| async move {
5303                            assert_eq!(
5304                                params
5305                                    .text_document_position_params
5306                                    .text_document
5307                                    .uri
5308                                    .as_str(),
5309                                "file:///root-1/main.rs"
5310                            );
5311                            assert_eq!(
5312                                params.text_document_position_params.position,
5313                                lsp::Position::new(0, 22)
5314                            );
5315                            Ok(Some(lsp::Hover {
5316                                contents: lsp::HoverContents::Array(vec![
5317                                    lsp::MarkedString::String("Test hover content.".to_string()),
5318                                    lsp::MarkedString::LanguageString(lsp::LanguageString {
5319                                        language: "Rust".to_string(),
5320                                        value: "let foo = 42;".to_string(),
5321                                    }),
5322                                ]),
5323                                range: Some(lsp::Range::new(
5324                                    lsp::Position::new(0, 22),
5325                                    lsp::Position::new(0, 29),
5326                                )),
5327                            }))
5328                        },
5329                    ),
5330                );
5331            }
5332            unexpected => panic!("Unexpected server name: {unexpected}"),
5333        }
5334    }
5335
5336    // Request hover information as the guest.
5337    let mut hovers = project_b
5338        .update(cx_b, |p, cx| p.hover(&buffer_b, 22, cx))
5339        .await;
5340    assert_eq!(
5341        hovers.len(),
5342        2,
5343        "Expected two hovers from both language servers, but got: {hovers:?}"
5344    );
5345
5346    let _: Vec<()> = futures::future::join_all(servers_with_hover_requests.into_values().map(
5347        |mut hover_request| async move {
5348            hover_request
5349                .next()
5350                .await
5351                .expect("All hover requests should have been triggered")
5352        },
5353    ))
5354    .await;
5355
5356    hovers.sort_by_key(|hover| hover.contents.len());
5357    let first_hover = hovers.first().cloned().unwrap();
5358    assert_eq!(
5359        first_hover.contents,
5360        vec![project::HoverBlock {
5361            text: "CrabLang-ls hover".to_string(),
5362            kind: HoverBlockKind::Markdown,
5363        },]
5364    );
5365    let second_hover = hovers.last().cloned().unwrap();
5366    assert_eq!(
5367        second_hover.contents,
5368        vec![
5369            project::HoverBlock {
5370                text: "Test hover content.".to_string(),
5371                kind: HoverBlockKind::Markdown,
5372            },
5373            project::HoverBlock {
5374                text: "let foo = 42;".to_string(),
5375                kind: HoverBlockKind::Code {
5376                    language: "Rust".to_string()
5377                },
5378            }
5379        ]
5380    );
5381    buffer_b.read_with(cx_b, |buffer, _| {
5382        let snapshot = buffer.snapshot();
5383        assert_eq!(second_hover.range.unwrap().to_offset(&snapshot), 22..29);
5384    });
5385}
5386
5387#[gpui::test(iterations = 10)]
5388async fn test_project_symbols(
5389    executor: BackgroundExecutor,
5390    cx_a: &mut TestAppContext,
5391    cx_b: &mut TestAppContext,
5392) {
5393    let mut server = TestServer::start(executor.clone()).await;
5394    let client_a = server.create_client(cx_a, "user_a").await;
5395    let client_b = server.create_client(cx_b, "user_b").await;
5396    server
5397        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5398        .await;
5399    let active_call_a = cx_a.read(ActiveCall::global);
5400
5401    client_a.language_registry().add(rust_lang());
5402    let mut fake_language_servers = client_a
5403        .language_registry()
5404        .register_fake_lsp("Rust", Default::default());
5405
5406    client_a
5407        .fs()
5408        .insert_tree(
5409            "/code",
5410            json!({
5411                "crate-1": {
5412                    "one.rs": "const ONE: usize = 1;",
5413                },
5414                "crate-2": {
5415                    "two.rs": "const TWO: usize = 2; const THREE: usize = 3;",
5416                },
5417                "private": {
5418                    "passwords.txt": "the-password",
5419                }
5420            }),
5421        )
5422        .await;
5423    let (project_a, worktree_id) = client_a.build_local_project("/code/crate-1", cx_a).await;
5424    let project_id = active_call_a
5425        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5426        .await
5427        .unwrap();
5428    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5429
5430    // Cause the language server to start.
5431    let _buffer = project_b
5432        .update(cx_b, |p, cx| {
5433            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
5434        })
5435        .await
5436        .unwrap();
5437
5438    let fake_language_server = fake_language_servers.next().await.unwrap();
5439    fake_language_server.set_request_handler::<lsp::WorkspaceSymbolRequest, _, _>(
5440        |_, _| async move {
5441            Ok(Some(lsp::WorkspaceSymbolResponse::Flat(vec![
5442                #[allow(deprecated)]
5443                lsp::SymbolInformation {
5444                    name: "TWO".into(),
5445                    location: lsp::Location {
5446                        uri: lsp::Url::from_file_path("/code/crate-2/two.rs").unwrap(),
5447                        range: lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5448                    },
5449                    kind: lsp::SymbolKind::CONSTANT,
5450                    tags: None,
5451                    container_name: None,
5452                    deprecated: None,
5453                },
5454            ])))
5455        },
5456    );
5457
5458    // Request the definition of a symbol as the guest.
5459    let symbols = project_b
5460        .update(cx_b, |p, cx| p.symbols("two", cx))
5461        .await
5462        .unwrap();
5463    assert_eq!(symbols.len(), 1);
5464    assert_eq!(symbols[0].name, "TWO");
5465
5466    // Open one of the returned symbols.
5467    let buffer_b_2 = project_b
5468        .update(cx_b, |project, cx| {
5469            project.open_buffer_for_symbol(&symbols[0], cx)
5470        })
5471        .await
5472        .unwrap();
5473
5474    buffer_b_2.read_with(cx_b, |buffer, cx| {
5475        assert_eq!(
5476            buffer.file().unwrap().full_path(cx),
5477            Path::new("/code/crate-2/two.rs")
5478        );
5479    });
5480
5481    // Attempt to craft a symbol and violate host's privacy by opening an arbitrary file.
5482    let mut fake_symbol = symbols[0].clone();
5483    fake_symbol.path.path = Path::new("/code/secrets").into();
5484    let error = project_b
5485        .update(cx_b, |project, cx| {
5486            project.open_buffer_for_symbol(&fake_symbol, cx)
5487        })
5488        .await
5489        .unwrap_err();
5490    assert!(error.to_string().contains("invalid symbol signature"));
5491}
5492
5493#[gpui::test(iterations = 10)]
5494async fn test_open_buffer_while_getting_definition_pointing_to_it(
5495    executor: BackgroundExecutor,
5496    cx_a: &mut TestAppContext,
5497    cx_b: &mut TestAppContext,
5498    mut rng: StdRng,
5499) {
5500    let mut server = TestServer::start(executor.clone()).await;
5501    let client_a = server.create_client(cx_a, "user_a").await;
5502    let client_b = server.create_client(cx_b, "user_b").await;
5503    server
5504        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5505        .await;
5506    let active_call_a = cx_a.read(ActiveCall::global);
5507
5508    client_a.language_registry().add(rust_lang());
5509    let mut fake_language_servers = client_a
5510        .language_registry()
5511        .register_fake_lsp("Rust", Default::default());
5512
5513    client_a
5514        .fs()
5515        .insert_tree(
5516            "/root",
5517            json!({
5518                "a.rs": "const ONE: usize = b::TWO;",
5519                "b.rs": "const TWO: usize = 2",
5520            }),
5521        )
5522        .await;
5523    let (project_a, worktree_id) = client_a.build_local_project("/root", cx_a).await;
5524    let project_id = active_call_a
5525        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5526        .await
5527        .unwrap();
5528    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5529
5530    let (buffer_b1, _lsp) = project_b
5531        .update(cx_b, |p, cx| {
5532            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
5533        })
5534        .await
5535        .unwrap();
5536
5537    let fake_language_server = fake_language_servers.next().await.unwrap();
5538    fake_language_server.set_request_handler::<lsp::request::GotoDefinition, _, _>(
5539        |_, _| async move {
5540            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
5541                lsp::Location::new(
5542                    lsp::Url::from_file_path("/root/b.rs").unwrap(),
5543                    lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5544                ),
5545            )))
5546        },
5547    );
5548
5549    let definitions;
5550    let buffer_b2;
5551    if rng.gen() {
5552        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5553        (buffer_b2, _) = project_b
5554            .update(cx_b, |p, cx| {
5555                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5556            })
5557            .await
5558            .unwrap();
5559    } else {
5560        (buffer_b2, _) = project_b
5561            .update(cx_b, |p, cx| {
5562                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5563            })
5564            .await
5565            .unwrap();
5566        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5567    }
5568
5569    let definitions = definitions.await.unwrap();
5570    assert_eq!(definitions.len(), 1);
5571    assert_eq!(definitions[0].target.buffer, buffer_b2);
5572}
5573
5574#[gpui::test(iterations = 10)]
5575async fn test_contacts(
5576    executor: BackgroundExecutor,
5577    cx_a: &mut TestAppContext,
5578    cx_b: &mut TestAppContext,
5579    cx_c: &mut TestAppContext,
5580    cx_d: &mut TestAppContext,
5581) {
5582    let mut server = TestServer::start(executor.clone()).await;
5583    let client_a = server.create_client(cx_a, "user_a").await;
5584    let client_b = server.create_client(cx_b, "user_b").await;
5585    let client_c = server.create_client(cx_c, "user_c").await;
5586    let client_d = server.create_client(cx_d, "user_d").await;
5587    server
5588        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
5589        .await;
5590    let active_call_a = cx_a.read(ActiveCall::global);
5591    let active_call_b = cx_b.read(ActiveCall::global);
5592    let active_call_c = cx_c.read(ActiveCall::global);
5593    let _active_call_d = cx_d.read(ActiveCall::global);
5594
5595    executor.run_until_parked();
5596    assert_eq!(
5597        contacts(&client_a, cx_a),
5598        [
5599            ("user_b".to_string(), "online", "free"),
5600            ("user_c".to_string(), "online", "free")
5601        ]
5602    );
5603    assert_eq!(
5604        contacts(&client_b, cx_b),
5605        [
5606            ("user_a".to_string(), "online", "free"),
5607            ("user_c".to_string(), "online", "free")
5608        ]
5609    );
5610    assert_eq!(
5611        contacts(&client_c, cx_c),
5612        [
5613            ("user_a".to_string(), "online", "free"),
5614            ("user_b".to_string(), "online", "free")
5615        ]
5616    );
5617    assert_eq!(contacts(&client_d, cx_d), []);
5618
5619    server.disconnect_client(client_c.peer_id().unwrap());
5620    server.forbid_connections();
5621    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5622    assert_eq!(
5623        contacts(&client_a, cx_a),
5624        [
5625            ("user_b".to_string(), "online", "free"),
5626            ("user_c".to_string(), "offline", "free")
5627        ]
5628    );
5629    assert_eq!(
5630        contacts(&client_b, cx_b),
5631        [
5632            ("user_a".to_string(), "online", "free"),
5633            ("user_c".to_string(), "offline", "free")
5634        ]
5635    );
5636    assert_eq!(contacts(&client_c, cx_c), []);
5637    assert_eq!(contacts(&client_d, cx_d), []);
5638
5639    server.allow_connections();
5640    client_c
5641        .authenticate_and_connect(false, &cx_c.to_async())
5642        .await
5643        .unwrap();
5644
5645    executor.run_until_parked();
5646    assert_eq!(
5647        contacts(&client_a, cx_a),
5648        [
5649            ("user_b".to_string(), "online", "free"),
5650            ("user_c".to_string(), "online", "free")
5651        ]
5652    );
5653    assert_eq!(
5654        contacts(&client_b, cx_b),
5655        [
5656            ("user_a".to_string(), "online", "free"),
5657            ("user_c".to_string(), "online", "free")
5658        ]
5659    );
5660    assert_eq!(
5661        contacts(&client_c, cx_c),
5662        [
5663            ("user_a".to_string(), "online", "free"),
5664            ("user_b".to_string(), "online", "free")
5665        ]
5666    );
5667    assert_eq!(contacts(&client_d, cx_d), []);
5668
5669    active_call_a
5670        .update(cx_a, |call, cx| {
5671            call.invite(client_b.user_id().unwrap(), None, cx)
5672        })
5673        .await
5674        .unwrap();
5675    executor.run_until_parked();
5676    assert_eq!(
5677        contacts(&client_a, cx_a),
5678        [
5679            ("user_b".to_string(), "online", "busy"),
5680            ("user_c".to_string(), "online", "free")
5681        ]
5682    );
5683    assert_eq!(
5684        contacts(&client_b, cx_b),
5685        [
5686            ("user_a".to_string(), "online", "busy"),
5687            ("user_c".to_string(), "online", "free")
5688        ]
5689    );
5690    assert_eq!(
5691        contacts(&client_c, cx_c),
5692        [
5693            ("user_a".to_string(), "online", "busy"),
5694            ("user_b".to_string(), "online", "busy")
5695        ]
5696    );
5697    assert_eq!(contacts(&client_d, cx_d), []);
5698
5699    // Client B and client D become contacts while client B is being called.
5700    server
5701        .make_contacts(&mut [(&client_b, cx_b), (&client_d, cx_d)])
5702        .await;
5703    executor.run_until_parked();
5704    assert_eq!(
5705        contacts(&client_a, cx_a),
5706        [
5707            ("user_b".to_string(), "online", "busy"),
5708            ("user_c".to_string(), "online", "free")
5709        ]
5710    );
5711    assert_eq!(
5712        contacts(&client_b, cx_b),
5713        [
5714            ("user_a".to_string(), "online", "busy"),
5715            ("user_c".to_string(), "online", "free"),
5716            ("user_d".to_string(), "online", "free"),
5717        ]
5718    );
5719    assert_eq!(
5720        contacts(&client_c, cx_c),
5721        [
5722            ("user_a".to_string(), "online", "busy"),
5723            ("user_b".to_string(), "online", "busy")
5724        ]
5725    );
5726    assert_eq!(
5727        contacts(&client_d, cx_d),
5728        [("user_b".to_string(), "online", "busy")]
5729    );
5730
5731    active_call_b.update(cx_b, |call, cx| call.decline_incoming(cx).unwrap());
5732    executor.run_until_parked();
5733    assert_eq!(
5734        contacts(&client_a, cx_a),
5735        [
5736            ("user_b".to_string(), "online", "free"),
5737            ("user_c".to_string(), "online", "free")
5738        ]
5739    );
5740    assert_eq!(
5741        contacts(&client_b, cx_b),
5742        [
5743            ("user_a".to_string(), "online", "free"),
5744            ("user_c".to_string(), "online", "free"),
5745            ("user_d".to_string(), "online", "free")
5746        ]
5747    );
5748    assert_eq!(
5749        contacts(&client_c, cx_c),
5750        [
5751            ("user_a".to_string(), "online", "free"),
5752            ("user_b".to_string(), "online", "free")
5753        ]
5754    );
5755    assert_eq!(
5756        contacts(&client_d, cx_d),
5757        [("user_b".to_string(), "online", "free")]
5758    );
5759
5760    active_call_c
5761        .update(cx_c, |call, cx| {
5762            call.invite(client_a.user_id().unwrap(), None, cx)
5763        })
5764        .await
5765        .unwrap();
5766    executor.run_until_parked();
5767    assert_eq!(
5768        contacts(&client_a, cx_a),
5769        [
5770            ("user_b".to_string(), "online", "free"),
5771            ("user_c".to_string(), "online", "busy")
5772        ]
5773    );
5774    assert_eq!(
5775        contacts(&client_b, cx_b),
5776        [
5777            ("user_a".to_string(), "online", "busy"),
5778            ("user_c".to_string(), "online", "busy"),
5779            ("user_d".to_string(), "online", "free")
5780        ]
5781    );
5782    assert_eq!(
5783        contacts(&client_c, cx_c),
5784        [
5785            ("user_a".to_string(), "online", "busy"),
5786            ("user_b".to_string(), "online", "free")
5787        ]
5788    );
5789    assert_eq!(
5790        contacts(&client_d, cx_d),
5791        [("user_b".to_string(), "online", "free")]
5792    );
5793
5794    active_call_a
5795        .update(cx_a, |call, cx| call.accept_incoming(cx))
5796        .await
5797        .unwrap();
5798    executor.run_until_parked();
5799    assert_eq!(
5800        contacts(&client_a, cx_a),
5801        [
5802            ("user_b".to_string(), "online", "free"),
5803            ("user_c".to_string(), "online", "busy")
5804        ]
5805    );
5806    assert_eq!(
5807        contacts(&client_b, cx_b),
5808        [
5809            ("user_a".to_string(), "online", "busy"),
5810            ("user_c".to_string(), "online", "busy"),
5811            ("user_d".to_string(), "online", "free")
5812        ]
5813    );
5814    assert_eq!(
5815        contacts(&client_c, cx_c),
5816        [
5817            ("user_a".to_string(), "online", "busy"),
5818            ("user_b".to_string(), "online", "free")
5819        ]
5820    );
5821    assert_eq!(
5822        contacts(&client_d, cx_d),
5823        [("user_b".to_string(), "online", "free")]
5824    );
5825
5826    active_call_a
5827        .update(cx_a, |call, cx| {
5828            call.invite(client_b.user_id().unwrap(), None, cx)
5829        })
5830        .await
5831        .unwrap();
5832    executor.run_until_parked();
5833    assert_eq!(
5834        contacts(&client_a, cx_a),
5835        [
5836            ("user_b".to_string(), "online", "busy"),
5837            ("user_c".to_string(), "online", "busy")
5838        ]
5839    );
5840    assert_eq!(
5841        contacts(&client_b, cx_b),
5842        [
5843            ("user_a".to_string(), "online", "busy"),
5844            ("user_c".to_string(), "online", "busy"),
5845            ("user_d".to_string(), "online", "free")
5846        ]
5847    );
5848    assert_eq!(
5849        contacts(&client_c, cx_c),
5850        [
5851            ("user_a".to_string(), "online", "busy"),
5852            ("user_b".to_string(), "online", "busy")
5853        ]
5854    );
5855    assert_eq!(
5856        contacts(&client_d, cx_d),
5857        [("user_b".to_string(), "online", "busy")]
5858    );
5859
5860    active_call_a
5861        .update(cx_a, |call, cx| call.hang_up(cx))
5862        .await
5863        .unwrap();
5864    executor.run_until_parked();
5865    assert_eq!(
5866        contacts(&client_a, cx_a),
5867        [
5868            ("user_b".to_string(), "online", "free"),
5869            ("user_c".to_string(), "online", "free")
5870        ]
5871    );
5872    assert_eq!(
5873        contacts(&client_b, cx_b),
5874        [
5875            ("user_a".to_string(), "online", "free"),
5876            ("user_c".to_string(), "online", "free"),
5877            ("user_d".to_string(), "online", "free")
5878        ]
5879    );
5880    assert_eq!(
5881        contacts(&client_c, cx_c),
5882        [
5883            ("user_a".to_string(), "online", "free"),
5884            ("user_b".to_string(), "online", "free")
5885        ]
5886    );
5887    assert_eq!(
5888        contacts(&client_d, cx_d),
5889        [("user_b".to_string(), "online", "free")]
5890    );
5891
5892    active_call_a
5893        .update(cx_a, |call, cx| {
5894            call.invite(client_b.user_id().unwrap(), None, cx)
5895        })
5896        .await
5897        .unwrap();
5898    executor.run_until_parked();
5899    assert_eq!(
5900        contacts(&client_a, cx_a),
5901        [
5902            ("user_b".to_string(), "online", "busy"),
5903            ("user_c".to_string(), "online", "free")
5904        ]
5905    );
5906    assert_eq!(
5907        contacts(&client_b, cx_b),
5908        [
5909            ("user_a".to_string(), "online", "busy"),
5910            ("user_c".to_string(), "online", "free"),
5911            ("user_d".to_string(), "online", "free")
5912        ]
5913    );
5914    assert_eq!(
5915        contacts(&client_c, cx_c),
5916        [
5917            ("user_a".to_string(), "online", "busy"),
5918            ("user_b".to_string(), "online", "busy")
5919        ]
5920    );
5921    assert_eq!(
5922        contacts(&client_d, cx_d),
5923        [("user_b".to_string(), "online", "busy")]
5924    );
5925
5926    server.forbid_connections();
5927    server.disconnect_client(client_a.peer_id().unwrap());
5928    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5929    assert_eq!(contacts(&client_a, cx_a), []);
5930    assert_eq!(
5931        contacts(&client_b, cx_b),
5932        [
5933            ("user_a".to_string(), "offline", "free"),
5934            ("user_c".to_string(), "online", "free"),
5935            ("user_d".to_string(), "online", "free")
5936        ]
5937    );
5938    assert_eq!(
5939        contacts(&client_c, cx_c),
5940        [
5941            ("user_a".to_string(), "offline", "free"),
5942            ("user_b".to_string(), "online", "free")
5943        ]
5944    );
5945    assert_eq!(
5946        contacts(&client_d, cx_d),
5947        [("user_b".to_string(), "online", "free")]
5948    );
5949
5950    // Test removing a contact
5951    client_b
5952        .user_store()
5953        .update(cx_b, |store, cx| {
5954            store.remove_contact(client_c.user_id().unwrap(), cx)
5955        })
5956        .await
5957        .unwrap();
5958    executor.run_until_parked();
5959    assert_eq!(
5960        contacts(&client_b, cx_b),
5961        [
5962            ("user_a".to_string(), "offline", "free"),
5963            ("user_d".to_string(), "online", "free")
5964        ]
5965    );
5966    assert_eq!(
5967        contacts(&client_c, cx_c),
5968        [("user_a".to_string(), "offline", "free"),]
5969    );
5970
5971    fn contacts(
5972        client: &TestClient,
5973        cx: &TestAppContext,
5974    ) -> Vec<(String, &'static str, &'static str)> {
5975        client.user_store().read_with(cx, |store, _| {
5976            store
5977                .contacts()
5978                .iter()
5979                .map(|contact| {
5980                    (
5981                        contact.user.github_login.clone(),
5982                        if contact.online { "online" } else { "offline" },
5983                        if contact.busy { "busy" } else { "free" },
5984                    )
5985                })
5986                .collect()
5987        })
5988    }
5989}
5990
5991#[gpui::test(iterations = 10)]
5992async fn test_contact_requests(
5993    executor: BackgroundExecutor,
5994    cx_a: &mut TestAppContext,
5995    cx_a2: &mut TestAppContext,
5996    cx_b: &mut TestAppContext,
5997    cx_b2: &mut TestAppContext,
5998    cx_c: &mut TestAppContext,
5999    cx_c2: &mut TestAppContext,
6000) {
6001    // Connect to a server as 3 clients.
6002    let mut server = TestServer::start(executor.clone()).await;
6003    let client_a = server.create_client(cx_a, "user_a").await;
6004    let client_a2 = server.create_client(cx_a2, "user_a").await;
6005    let client_b = server.create_client(cx_b, "user_b").await;
6006    let client_b2 = server.create_client(cx_b2, "user_b").await;
6007    let client_c = server.create_client(cx_c, "user_c").await;
6008    let client_c2 = server.create_client(cx_c2, "user_c").await;
6009
6010    assert_eq!(client_a.user_id().unwrap(), client_a2.user_id().unwrap());
6011    assert_eq!(client_b.user_id().unwrap(), client_b2.user_id().unwrap());
6012    assert_eq!(client_c.user_id().unwrap(), client_c2.user_id().unwrap());
6013
6014    // User A and User C request that user B become their contact.
6015    client_a
6016        .user_store()
6017        .update(cx_a, |store, cx| {
6018            store.request_contact(client_b.user_id().unwrap(), cx)
6019        })
6020        .await
6021        .unwrap();
6022    client_c
6023        .user_store()
6024        .update(cx_c, |store, cx| {
6025            store.request_contact(client_b.user_id().unwrap(), cx)
6026        })
6027        .await
6028        .unwrap();
6029    executor.run_until_parked();
6030
6031    // All users see the pending request appear in all their clients.
6032    assert_eq!(
6033        client_a.summarize_contacts(cx_a).outgoing_requests,
6034        &["user_b"]
6035    );
6036    assert_eq!(
6037        client_a2.summarize_contacts(cx_a2).outgoing_requests,
6038        &["user_b"]
6039    );
6040    assert_eq!(
6041        client_b.summarize_contacts(cx_b).incoming_requests,
6042        &["user_a", "user_c"]
6043    );
6044    assert_eq!(
6045        client_b2.summarize_contacts(cx_b2).incoming_requests,
6046        &["user_a", "user_c"]
6047    );
6048    assert_eq!(
6049        client_c.summarize_contacts(cx_c).outgoing_requests,
6050        &["user_b"]
6051    );
6052    assert_eq!(
6053        client_c2.summarize_contacts(cx_c2).outgoing_requests,
6054        &["user_b"]
6055    );
6056
6057    // Contact requests are present upon connecting (tested here via disconnect/reconnect)
6058    disconnect_and_reconnect(&client_a, cx_a).await;
6059    disconnect_and_reconnect(&client_b, cx_b).await;
6060    disconnect_and_reconnect(&client_c, cx_c).await;
6061    executor.run_until_parked();
6062    assert_eq!(
6063        client_a.summarize_contacts(cx_a).outgoing_requests,
6064        &["user_b"]
6065    );
6066    assert_eq!(
6067        client_b.summarize_contacts(cx_b).incoming_requests,
6068        &["user_a", "user_c"]
6069    );
6070    assert_eq!(
6071        client_c.summarize_contacts(cx_c).outgoing_requests,
6072        &["user_b"]
6073    );
6074
6075    // User B accepts the request from user A.
6076    client_b
6077        .user_store()
6078        .update(cx_b, |store, cx| {
6079            store.respond_to_contact_request(client_a.user_id().unwrap(), true, cx)
6080        })
6081        .await
6082        .unwrap();
6083
6084    executor.run_until_parked();
6085
6086    // User B sees user A as their contact now in all client, and the incoming request from them is removed.
6087    let contacts_b = client_b.summarize_contacts(cx_b);
6088    assert_eq!(contacts_b.current, &["user_a"]);
6089    assert_eq!(contacts_b.incoming_requests, &["user_c"]);
6090    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6091    assert_eq!(contacts_b2.current, &["user_a"]);
6092    assert_eq!(contacts_b2.incoming_requests, &["user_c"]);
6093
6094    // User A sees user B as their contact now in all clients, and the outgoing request to them is removed.
6095    let contacts_a = client_a.summarize_contacts(cx_a);
6096    assert_eq!(contacts_a.current, &["user_b"]);
6097    assert!(contacts_a.outgoing_requests.is_empty());
6098    let contacts_a2 = client_a2.summarize_contacts(cx_a2);
6099    assert_eq!(contacts_a2.current, &["user_b"]);
6100    assert!(contacts_a2.outgoing_requests.is_empty());
6101
6102    // Contacts are present upon connecting (tested here via disconnect/reconnect)
6103    disconnect_and_reconnect(&client_a, cx_a).await;
6104    disconnect_and_reconnect(&client_b, cx_b).await;
6105    disconnect_and_reconnect(&client_c, cx_c).await;
6106    executor.run_until_parked();
6107    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6108    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6109    assert_eq!(
6110        client_b.summarize_contacts(cx_b).incoming_requests,
6111        &["user_c"]
6112    );
6113    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6114    assert_eq!(
6115        client_c.summarize_contacts(cx_c).outgoing_requests,
6116        &["user_b"]
6117    );
6118
6119    // User B rejects the request from user C.
6120    client_b
6121        .user_store()
6122        .update(cx_b, |store, cx| {
6123            store.respond_to_contact_request(client_c.user_id().unwrap(), false, cx)
6124        })
6125        .await
6126        .unwrap();
6127
6128    executor.run_until_parked();
6129
6130    // User B doesn't see user C as their contact, and the incoming request from them is removed.
6131    let contacts_b = client_b.summarize_contacts(cx_b);
6132    assert_eq!(contacts_b.current, &["user_a"]);
6133    assert!(contacts_b.incoming_requests.is_empty());
6134    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6135    assert_eq!(contacts_b2.current, &["user_a"]);
6136    assert!(contacts_b2.incoming_requests.is_empty());
6137
6138    // User C doesn't see user B as their contact, and the outgoing request to them is removed.
6139    let contacts_c = client_c.summarize_contacts(cx_c);
6140    assert!(contacts_c.current.is_empty());
6141    assert!(contacts_c.outgoing_requests.is_empty());
6142    let contacts_c2 = client_c2.summarize_contacts(cx_c2);
6143    assert!(contacts_c2.current.is_empty());
6144    assert!(contacts_c2.outgoing_requests.is_empty());
6145
6146    // Incoming/outgoing requests are not present upon connecting (tested here via disconnect/reconnect)
6147    disconnect_and_reconnect(&client_a, cx_a).await;
6148    disconnect_and_reconnect(&client_b, cx_b).await;
6149    disconnect_and_reconnect(&client_c, cx_c).await;
6150    executor.run_until_parked();
6151    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6152    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6153    assert!(client_b
6154        .summarize_contacts(cx_b)
6155        .incoming_requests
6156        .is_empty());
6157    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6158    assert!(client_c
6159        .summarize_contacts(cx_c)
6160        .outgoing_requests
6161        .is_empty());
6162
6163    async fn disconnect_and_reconnect(client: &TestClient, cx: &mut TestAppContext) {
6164        client.disconnect(&cx.to_async());
6165        client.clear_contacts(cx).await;
6166        client
6167            .authenticate_and_connect(false, &cx.to_async())
6168            .await
6169            .unwrap();
6170    }
6171}
6172
6173// TODO: Re-enable this test once we can replace our swift Livekit SDK with the rust SDK
6174#[cfg(not(target_os = "macos"))]
6175#[gpui::test(iterations = 10)]
6176async fn test_join_call_after_screen_was_shared(
6177    executor: BackgroundExecutor,
6178    cx_a: &mut TestAppContext,
6179    cx_b: &mut TestAppContext,
6180) {
6181    let mut server = TestServer::start(executor.clone()).await;
6182
6183    let client_a = server.create_client(cx_a, "user_a").await;
6184    let client_b = server.create_client(cx_b, "user_b").await;
6185    server
6186        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6187        .await;
6188
6189    let active_call_a = cx_a.read(ActiveCall::global);
6190    let active_call_b = cx_b.read(ActiveCall::global);
6191
6192    // Call users B and C from client A.
6193    active_call_a
6194        .update(cx_a, |call, cx| {
6195            call.invite(client_b.user_id().unwrap(), None, cx)
6196        })
6197        .await
6198        .unwrap();
6199
6200    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
6201    executor.run_until_parked();
6202    assert_eq!(
6203        room_participants(&room_a, cx_a),
6204        RoomParticipants {
6205            remote: Default::default(),
6206            pending: vec!["user_b".to_string()]
6207        }
6208    );
6209
6210    // User B receives the call.
6211
6212    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
6213    let call_b = incoming_call_b.next().await.unwrap().unwrap();
6214    assert_eq!(call_b.calling_user.github_login, "user_a");
6215
6216    // User A shares their screen
6217    let display = gpui::TestScreenCaptureSource::new();
6218    cx_a.set_screen_capture_sources(vec![display]);
6219    active_call_a
6220        .update(cx_a, |call, cx| {
6221            call.room()
6222                .unwrap()
6223                .update(cx, |room, cx| room.share_screen(cx))
6224        })
6225        .await
6226        .unwrap();
6227
6228    client_b.user_store().update(cx_b, |user_store, _| {
6229        user_store.clear_cache();
6230    });
6231
6232    // User B joins the room
6233    active_call_b
6234        .update(cx_b, |call, cx| call.accept_incoming(cx))
6235        .await
6236        .unwrap();
6237
6238    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
6239    assert!(incoming_call_b.next().await.unwrap().is_none());
6240
6241    executor.run_until_parked();
6242    assert_eq!(
6243        room_participants(&room_a, cx_a),
6244        RoomParticipants {
6245            remote: vec!["user_b".to_string()],
6246            pending: vec![],
6247        }
6248    );
6249    assert_eq!(
6250        room_participants(&room_b, cx_b),
6251        RoomParticipants {
6252            remote: vec!["user_a".to_string()],
6253            pending: vec![],
6254        }
6255    );
6256
6257    // Ensure User B sees User A's screenshare.
6258
6259    room_b.read_with(cx_b, |room, _| {
6260        assert_eq!(
6261            room.remote_participants()
6262                .get(&client_a.user_id().unwrap())
6263                .unwrap()
6264                .video_tracks
6265                .len(),
6266            1
6267        );
6268    });
6269}
6270
6271#[gpui::test]
6272async fn test_right_click_menu_behind_collab_panel(cx: &mut TestAppContext) {
6273    let mut server = TestServer::start(cx.executor().clone()).await;
6274    let client_a = server.create_client(cx, "user_a").await;
6275    let (_workspace_a, cx) = client_a.build_test_workspace(cx).await;
6276
6277    cx.simulate_resize(size(px(300.), px(300.)));
6278
6279    cx.simulate_keystrokes("cmd-n cmd-n cmd-n");
6280    cx.update(|window, _cx| window.refresh());
6281
6282    let tab_bounds = cx.debug_bounds("TAB-2").unwrap();
6283    let new_tab_button_bounds = cx.debug_bounds("ICON-Plus").unwrap();
6284
6285    assert!(
6286        tab_bounds.intersects(&new_tab_button_bounds),
6287        "Tab should overlap with the new tab button, if this is failing check if there's been a redesign!"
6288    );
6289
6290    cx.simulate_event(MouseDownEvent {
6291        button: MouseButton::Right,
6292        position: new_tab_button_bounds.center(),
6293        modifiers: Modifiers::default(),
6294        click_count: 1,
6295        first_mouse: false,
6296    });
6297
6298    // regression test that the right click menu for tabs does not open.
6299    assert!(cx.debug_bounds("MENU_ITEM-Close").is_none());
6300
6301    let tab_bounds = cx.debug_bounds("TAB-1").unwrap();
6302    cx.simulate_event(MouseDownEvent {
6303        button: MouseButton::Right,
6304        position: tab_bounds.center(),
6305        modifiers: Modifiers::default(),
6306        click_count: 1,
6307        first_mouse: false,
6308    });
6309    assert!(cx.debug_bounds("MENU_ITEM-Close").is_some());
6310}
6311
6312#[gpui::test]
6313async fn test_pane_split_left(cx: &mut TestAppContext) {
6314    let (_, client) = TestServer::start1(cx).await;
6315    let (workspace, cx) = client.build_test_workspace(cx).await;
6316
6317    cx.simulate_keystrokes("cmd-n");
6318    workspace.update(cx, |workspace, cx| {
6319        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 1);
6320    });
6321    cx.simulate_keystrokes("cmd-k left");
6322    workspace.update(cx, |workspace, cx| {
6323        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6324    });
6325    cx.simulate_keystrokes("cmd-k");
6326    // sleep for longer than the timeout in keyboard shortcut handling
6327    // to verify that it doesn't fire in this case.
6328    cx.executor().advance_clock(Duration::from_secs(2));
6329    cx.simulate_keystrokes("left");
6330    workspace.update(cx, |workspace, cx| {
6331        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6332    });
6333}
6334
6335#[gpui::test]
6336async fn test_join_after_restart(cx1: &mut TestAppContext, cx2: &mut TestAppContext) {
6337    let (mut server, client) = TestServer::start1(cx1).await;
6338    let channel1 = server.make_public_channel("channel1", &client, cx1).await;
6339    let channel2 = server.make_public_channel("channel2", &client, cx1).await;
6340
6341    join_channel(channel1, &client, cx1).await.unwrap();
6342    drop(client);
6343
6344    let client2 = server.create_client(cx2, "user_a").await;
6345    join_channel(channel2, &client2, cx2).await.unwrap();
6346}
6347
6348#[gpui::test]
6349async fn test_preview_tabs(cx: &mut TestAppContext) {
6350    let (_server, client) = TestServer::start1(cx).await;
6351    let (workspace, cx) = client.build_test_workspace(cx).await;
6352    let project = workspace.update(cx, |workspace, _| workspace.project().clone());
6353
6354    let worktree_id = project.update(cx, |project, cx| {
6355        project.worktrees(cx).next().unwrap().read(cx).id()
6356    });
6357
6358    let path_1 = ProjectPath {
6359        worktree_id,
6360        path: Path::new("1.txt").into(),
6361    };
6362    let path_2 = ProjectPath {
6363        worktree_id,
6364        path: Path::new("2.js").into(),
6365    };
6366    let path_3 = ProjectPath {
6367        worktree_id,
6368        path: Path::new("3.rs").into(),
6369    };
6370
6371    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6372
6373    let get_path = |pane: &Pane, idx: usize, cx: &App| {
6374        pane.item_for_index(idx).unwrap().project_path(cx).unwrap()
6375    };
6376
6377    // Opening item 3 as a "permanent" tab
6378    workspace
6379        .update_in(cx, |workspace, window, cx| {
6380            workspace.open_path(path_3.clone(), None, false, window, cx)
6381        })
6382        .await
6383        .unwrap();
6384
6385    pane.update(cx, |pane, cx| {
6386        assert_eq!(pane.items_len(), 1);
6387        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6388        assert_eq!(pane.preview_item_id(), None);
6389
6390        assert!(!pane.can_navigate_backward());
6391        assert!(!pane.can_navigate_forward());
6392    });
6393
6394    // Open item 1 as preview
6395    workspace
6396        .update_in(cx, |workspace, window, cx| {
6397            workspace.open_path_preview(path_1.clone(), None, true, true, true, window, cx)
6398        })
6399        .await
6400        .unwrap();
6401
6402    pane.update(cx, |pane, cx| {
6403        assert_eq!(pane.items_len(), 2);
6404        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6405        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6406        assert_eq!(
6407            pane.preview_item_id(),
6408            Some(pane.items().nth(1).unwrap().item_id())
6409        );
6410
6411        assert!(pane.can_navigate_backward());
6412        assert!(!pane.can_navigate_forward());
6413    });
6414
6415    // Open item 2 as preview
6416    workspace
6417        .update_in(cx, |workspace, window, cx| {
6418            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6419        })
6420        .await
6421        .unwrap();
6422
6423    pane.update(cx, |pane, cx| {
6424        assert_eq!(pane.items_len(), 2);
6425        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6426        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6427        assert_eq!(
6428            pane.preview_item_id(),
6429            Some(pane.items().nth(1).unwrap().item_id())
6430        );
6431
6432        assert!(pane.can_navigate_backward());
6433        assert!(!pane.can_navigate_forward());
6434    });
6435
6436    // Going back should show item 1 as preview
6437    workspace
6438        .update_in(cx, |workspace, window, cx| {
6439            workspace.go_back(pane.downgrade(), window, cx)
6440        })
6441        .await
6442        .unwrap();
6443
6444    pane.update(cx, |pane, cx| {
6445        assert_eq!(pane.items_len(), 2);
6446        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6447        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6448        assert_eq!(
6449            pane.preview_item_id(),
6450            Some(pane.items().nth(1).unwrap().item_id())
6451        );
6452
6453        assert!(pane.can_navigate_backward());
6454        assert!(pane.can_navigate_forward());
6455    });
6456
6457    // Closing item 1
6458    pane.update_in(cx, |pane, window, cx| {
6459        pane.close_item_by_id(
6460            pane.active_item().unwrap().item_id(),
6461            workspace::SaveIntent::Skip,
6462            window,
6463            cx,
6464        )
6465    })
6466    .await
6467    .unwrap();
6468
6469    pane.update(cx, |pane, cx| {
6470        assert_eq!(pane.items_len(), 1);
6471        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6472        assert_eq!(pane.preview_item_id(), None);
6473
6474        assert!(pane.can_navigate_backward());
6475        assert!(!pane.can_navigate_forward());
6476    });
6477
6478    // Going back should show item 1 as preview
6479    workspace
6480        .update_in(cx, |workspace, window, cx| {
6481            workspace.go_back(pane.downgrade(), window, cx)
6482        })
6483        .await
6484        .unwrap();
6485
6486    pane.update(cx, |pane, cx| {
6487        assert_eq!(pane.items_len(), 2);
6488        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6489        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6490        assert_eq!(
6491            pane.preview_item_id(),
6492            Some(pane.items().nth(1).unwrap().item_id())
6493        );
6494
6495        assert!(pane.can_navigate_backward());
6496        assert!(pane.can_navigate_forward());
6497    });
6498
6499    // Close permanent tab
6500    pane.update_in(cx, |pane, window, cx| {
6501        let id = pane.items().next().unwrap().item_id();
6502        pane.close_item_by_id(id, workspace::SaveIntent::Skip, window, cx)
6503    })
6504    .await
6505    .unwrap();
6506
6507    pane.update(cx, |pane, cx| {
6508        assert_eq!(pane.items_len(), 1);
6509        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6510        assert_eq!(
6511            pane.preview_item_id(),
6512            Some(pane.items().next().unwrap().item_id())
6513        );
6514
6515        assert!(pane.can_navigate_backward());
6516        assert!(pane.can_navigate_forward());
6517    });
6518
6519    // Split pane to the right
6520    pane.update(cx, |pane, cx| {
6521        pane.split(workspace::SplitDirection::Right, cx);
6522    });
6523
6524    let right_pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6525
6526    pane.update(cx, |pane, cx| {
6527        assert_eq!(pane.items_len(), 1);
6528        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6529        assert_eq!(
6530            pane.preview_item_id(),
6531            Some(pane.items().next().unwrap().item_id())
6532        );
6533
6534        assert!(pane.can_navigate_backward());
6535        assert!(pane.can_navigate_forward());
6536    });
6537
6538    right_pane.update(cx, |pane, cx| {
6539        assert_eq!(pane.items_len(), 1);
6540        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6541        assert_eq!(pane.preview_item_id(), None);
6542
6543        assert!(!pane.can_navigate_backward());
6544        assert!(!pane.can_navigate_forward());
6545    });
6546
6547    // Open item 2 as preview in right pane
6548    workspace
6549        .update_in(cx, |workspace, window, cx| {
6550            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6551        })
6552        .await
6553        .unwrap();
6554
6555    pane.update(cx, |pane, cx| {
6556        assert_eq!(pane.items_len(), 1);
6557        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6558        assert_eq!(
6559            pane.preview_item_id(),
6560            Some(pane.items().next().unwrap().item_id())
6561        );
6562
6563        assert!(pane.can_navigate_backward());
6564        assert!(pane.can_navigate_forward());
6565    });
6566
6567    right_pane.update(cx, |pane, cx| {
6568        assert_eq!(pane.items_len(), 2);
6569        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6570        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6571        assert_eq!(
6572            pane.preview_item_id(),
6573            Some(pane.items().nth(1).unwrap().item_id())
6574        );
6575
6576        assert!(pane.can_navigate_backward());
6577        assert!(!pane.can_navigate_forward());
6578    });
6579
6580    // Focus left pane
6581    workspace.update_in(cx, |workspace, window, cx| {
6582        workspace.activate_pane_in_direction(workspace::SplitDirection::Left, window, cx)
6583    });
6584
6585    // Open item 2 as preview in left pane
6586    workspace
6587        .update_in(cx, |workspace, window, cx| {
6588            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6589        })
6590        .await
6591        .unwrap();
6592
6593    pane.update(cx, |pane, cx| {
6594        assert_eq!(pane.items_len(), 1);
6595        assert_eq!(get_path(pane, 0, cx), path_2.clone());
6596        assert_eq!(
6597            pane.preview_item_id(),
6598            Some(pane.items().next().unwrap().item_id())
6599        );
6600
6601        assert!(pane.can_navigate_backward());
6602        assert!(!pane.can_navigate_forward());
6603    });
6604
6605    right_pane.update(cx, |pane, cx| {
6606        assert_eq!(pane.items_len(), 2);
6607        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6608        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6609        assert_eq!(
6610            pane.preview_item_id(),
6611            Some(pane.items().nth(1).unwrap().item_id())
6612        );
6613
6614        assert!(pane.can_navigate_backward());
6615        assert!(!pane.can_navigate_forward());
6616    });
6617}
6618
6619#[gpui::test(iterations = 10)]
6620async fn test_context_collaboration_with_reconnect(
6621    executor: BackgroundExecutor,
6622    cx_a: &mut TestAppContext,
6623    cx_b: &mut TestAppContext,
6624) {
6625    let mut server = TestServer::start(executor.clone()).await;
6626    let client_a = server.create_client(cx_a, "user_a").await;
6627    let client_b = server.create_client(cx_b, "user_b").await;
6628    server
6629        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6630        .await;
6631    let active_call_a = cx_a.read(ActiveCall::global);
6632
6633    client_a.fs().insert_tree("/a", Default::default()).await;
6634    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
6635    let project_id = active_call_a
6636        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6637        .await
6638        .unwrap();
6639    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6640
6641    // Client A sees that a guest has joined.
6642    executor.run_until_parked();
6643
6644    project_a.read_with(cx_a, |project, _| {
6645        assert_eq!(project.collaborators().len(), 1);
6646    });
6647    project_b.read_with(cx_b, |project, _| {
6648        assert_eq!(project.collaborators().len(), 1);
6649    });
6650
6651    cx_a.update(context_server::init);
6652    cx_b.update(context_server::init);
6653    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
6654    let context_store_a = cx_a
6655        .update(|cx| {
6656            ContextStore::new(
6657                project_a.clone(),
6658                prompt_builder.clone(),
6659                Arc::new(SlashCommandWorkingSet::default()),
6660                cx,
6661            )
6662        })
6663        .await
6664        .unwrap();
6665    let context_store_b = cx_b
6666        .update(|cx| {
6667            ContextStore::new(
6668                project_b.clone(),
6669                prompt_builder.clone(),
6670                Arc::new(SlashCommandWorkingSet::default()),
6671                cx,
6672            )
6673        })
6674        .await
6675        .unwrap();
6676
6677    // Client A creates a new chats.
6678    let context_a = context_store_a.update(cx_a, |store, cx| store.create(cx));
6679    executor.run_until_parked();
6680
6681    // Client B retrieves host's contexts and joins one.
6682    let context_b = context_store_b
6683        .update(cx_b, |store, cx| {
6684            let host_contexts = store.host_contexts().to_vec();
6685            assert_eq!(host_contexts.len(), 1);
6686            store.open_remote_context(host_contexts[0].id.clone(), cx)
6687        })
6688        .await
6689        .unwrap();
6690
6691    // Host and guest make changes
6692    context_a.update(cx_a, |context, cx| {
6693        context.buffer().update(cx, |buffer, cx| {
6694            buffer.edit([(0..0, "Host change\n")], None, cx)
6695        })
6696    });
6697    context_b.update(cx_b, |context, cx| {
6698        context.buffer().update(cx, |buffer, cx| {
6699            buffer.edit([(0..0, "Guest change\n")], None, cx)
6700        })
6701    });
6702    executor.run_until_parked();
6703    assert_eq!(
6704        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6705        "Guest change\nHost change\n"
6706    );
6707    assert_eq!(
6708        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6709        "Guest change\nHost change\n"
6710    );
6711
6712    // Disconnect client A and make some changes while disconnected.
6713    server.disconnect_client(client_a.peer_id().unwrap());
6714    server.forbid_connections();
6715    context_a.update(cx_a, |context, cx| {
6716        context.buffer().update(cx, |buffer, cx| {
6717            buffer.edit([(0..0, "Host offline change\n")], None, cx)
6718        })
6719    });
6720    context_b.update(cx_b, |context, cx| {
6721        context.buffer().update(cx, |buffer, cx| {
6722            buffer.edit([(0..0, "Guest offline change\n")], None, cx)
6723        })
6724    });
6725    executor.run_until_parked();
6726    assert_eq!(
6727        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6728        "Host offline change\nGuest change\nHost change\n"
6729    );
6730    assert_eq!(
6731        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6732        "Guest offline change\nGuest change\nHost change\n"
6733    );
6734
6735    // Allow client A to reconnect and verify that contexts converge.
6736    server.allow_connections();
6737    executor.advance_clock(RECEIVE_TIMEOUT);
6738    assert_eq!(
6739        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6740        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6741    );
6742    assert_eq!(
6743        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6744        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6745    );
6746
6747    // Client A disconnects without being able to reconnect. Context B becomes readonly.
6748    server.forbid_connections();
6749    server.disconnect_client(client_a.peer_id().unwrap());
6750    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
6751    context_b.read_with(cx_b, |context, cx| {
6752        assert!(context.buffer().read(cx).read_only());
6753    });
6754}
6755
6756#[gpui::test]
6757async fn test_remote_git_branches(
6758    executor: BackgroundExecutor,
6759    cx_a: &mut TestAppContext,
6760    cx_b: &mut TestAppContext,
6761) {
6762    let mut server = TestServer::start(executor.clone()).await;
6763    let client_a = server.create_client(cx_a, "user_a").await;
6764    let client_b = server.create_client(cx_b, "user_b").await;
6765    server
6766        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6767        .await;
6768    let active_call_a = cx_a.read(ActiveCall::global);
6769
6770    client_a
6771        .fs()
6772        .insert_tree("/project", serde_json::json!({ ".git":{} }))
6773        .await;
6774    let branches = ["main", "dev", "feature-1"];
6775    client_a
6776        .fs()
6777        .insert_branches(Path::new("/project/.git"), &branches);
6778    let branches_set = branches
6779        .into_iter()
6780        .map(ToString::to_string)
6781        .collect::<HashSet<_>>();
6782
6783    let (project_a, _) = client_a.build_local_project("/project", cx_a).await;
6784
6785    let project_id = active_call_a
6786        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6787        .await
6788        .unwrap();
6789    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6790
6791    // Client A sees that a guest has joined and the repo has been populated
6792    executor.run_until_parked();
6793
6794    let repo_b = cx_b.update(|cx| project_b.read(cx).active_repository(cx).unwrap());
6795
6796    let branches_b = cx_b
6797        .update(|cx| repo_b.update(cx, |repository, _| repository.branches()))
6798        .await
6799        .unwrap()
6800        .unwrap();
6801
6802    let new_branch = branches[2];
6803
6804    let branches_b = branches_b
6805        .into_iter()
6806        .map(|branch| branch.name.to_string())
6807        .collect::<HashSet<_>>();
6808
6809    assert_eq!(branches_b, branches_set);
6810
6811    cx_b.update(|cx| repo_b.read(cx).change_branch(new_branch.to_string()))
6812        .await
6813        .unwrap()
6814        .unwrap();
6815
6816    executor.run_until_parked();
6817
6818    let host_branch = cx_a.update(|cx| {
6819        project_a.update(cx, |project, cx| {
6820            project
6821                .repositories(cx)
6822                .values()
6823                .next()
6824                .unwrap()
6825                .read(cx)
6826                .current_branch()
6827                .unwrap()
6828                .clone()
6829        })
6830    });
6831
6832    assert_eq!(host_branch.name, branches[2]);
6833
6834    // Also try creating a new branch
6835    cx_b.update(|cx| {
6836        repo_b
6837            .read(cx)
6838            .create_branch("totally-new-branch".to_string())
6839    })
6840    .await
6841    .unwrap()
6842    .unwrap();
6843
6844    cx_b.update(|cx| {
6845        repo_b
6846            .read(cx)
6847            .change_branch("totally-new-branch".to_string())
6848    })
6849    .await
6850    .unwrap()
6851    .unwrap();
6852
6853    executor.run_until_parked();
6854
6855    let host_branch = cx_a.update(|cx| {
6856        project_a.update(cx, |project, cx| {
6857            project
6858                .repositories(cx)
6859                .values()
6860                .next()
6861                .unwrap()
6862                .read(cx)
6863                .current_branch()
6864                .unwrap()
6865                .clone()
6866        })
6867    });
6868
6869    assert_eq!(host_branch.name, "totally-new-branch");
6870}