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]
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 root_entry = worktree.read(cx).snapshot().root_git_entry().unwrap();
2899        assert_eq!(
2900            root_entry.branch().map(|branch| branch.name.to_string()),
2901            branch_name
2902        );
2903    }
2904
2905    // Smoke test branch reading
2906
2907    project_local.read_with(cx_a, |project, cx| {
2908        assert_branch(Some("branch-1"), project, cx)
2909    });
2910
2911    project_remote.read_with(cx_b, |project, cx| {
2912        assert_branch(Some("branch-1"), project, cx)
2913    });
2914
2915    client_a
2916        .fs()
2917        .set_branch_name(Path::new("/dir/.git"), Some("branch-2"));
2918
2919    // Wait for buffer_local_a to receive it
2920    executor.run_until_parked();
2921
2922    // Smoke test branch reading
2923
2924    project_local.read_with(cx_a, |project, cx| {
2925        assert_branch(Some("branch-2"), project, cx)
2926    });
2927
2928    project_remote.read_with(cx_b, |project, cx| {
2929        assert_branch(Some("branch-2"), project, cx)
2930    });
2931
2932    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
2933    executor.run_until_parked();
2934
2935    project_remote_c.read_with(cx_c, |project, cx| {
2936        assert_branch(Some("branch-2"), project, cx)
2937    });
2938}
2939
2940#[gpui::test]
2941async fn test_git_status_sync(
2942    executor: BackgroundExecutor,
2943    cx_a: &mut TestAppContext,
2944    cx_b: &mut TestAppContext,
2945    cx_c: &mut TestAppContext,
2946) {
2947    let mut server = TestServer::start(executor.clone()).await;
2948    let client_a = server.create_client(cx_a, "user_a").await;
2949    let client_b = server.create_client(cx_b, "user_b").await;
2950    let client_c = server.create_client(cx_c, "user_c").await;
2951    server
2952        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2953        .await;
2954    let active_call_a = cx_a.read(ActiveCall::global);
2955
2956    client_a
2957        .fs()
2958        .insert_tree(
2959            "/dir",
2960            json!({
2961                ".git": {},
2962                "a.txt": "a",
2963                "b.txt": "b",
2964                "c.txt": "c",
2965            }),
2966        )
2967        .await;
2968
2969    // Initially, a.txt is uncommitted, but present in the index,
2970    // and b.txt is unmerged.
2971    client_a.fs().set_head_for_repo(
2972        "/dir/.git".as_ref(),
2973        &[("b.txt".into(), "B".into()), ("c.txt".into(), "c".into())],
2974    );
2975    client_a.fs().set_index_for_repo(
2976        "/dir/.git".as_ref(),
2977        &[
2978            ("a.txt".into(), "".into()),
2979            ("b.txt".into(), "B".into()),
2980            ("c.txt".into(), "c".into()),
2981        ],
2982    );
2983    client_a.fs().set_unmerged_paths_for_repo(
2984        "/dir/.git".as_ref(),
2985        &[(
2986            "b.txt".into(),
2987            UnmergedStatus {
2988                first_head: UnmergedStatusCode::Updated,
2989                second_head: UnmergedStatusCode::Deleted,
2990            },
2991        )],
2992    );
2993
2994    const A_STATUS_START: FileStatus = FileStatus::Tracked(TrackedStatus {
2995        index_status: StatusCode::Added,
2996        worktree_status: StatusCode::Modified,
2997    });
2998    const B_STATUS_START: FileStatus = FileStatus::Unmerged(UnmergedStatus {
2999        first_head: UnmergedStatusCode::Updated,
3000        second_head: UnmergedStatusCode::Deleted,
3001    });
3002
3003    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3004    let project_id = active_call_a
3005        .update(cx_a, |call, cx| {
3006            call.share_project(project_local.clone(), cx)
3007        })
3008        .await
3009        .unwrap();
3010
3011    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
3012
3013    // Wait for it to catch up to the new status
3014    executor.run_until_parked();
3015
3016    #[track_caller]
3017    fn assert_status(
3018        file: impl AsRef<Path>,
3019        status: Option<FileStatus>,
3020        project: &Project,
3021        cx: &App,
3022    ) {
3023        let file = file.as_ref();
3024        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
3025        assert_eq!(worktrees.len(), 1);
3026        let worktree = worktrees[0].clone();
3027        let snapshot = worktree.read(cx).snapshot();
3028        assert_eq!(snapshot.status_for_file(file), status);
3029    }
3030
3031    project_local.read_with(cx_a, |project, cx| {
3032        assert_status("a.txt", Some(A_STATUS_START), project, cx);
3033        assert_status("b.txt", Some(B_STATUS_START), project, cx);
3034        assert_status("c.txt", None, project, cx);
3035    });
3036
3037    project_remote.read_with(cx_b, |project, cx| {
3038        assert_status("a.txt", Some(A_STATUS_START), project, cx);
3039        assert_status("b.txt", Some(B_STATUS_START), project, cx);
3040        assert_status("c.txt", None, project, cx);
3041    });
3042
3043    const A_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3044        index_status: StatusCode::Added,
3045        worktree_status: StatusCode::Unmodified,
3046    });
3047    const B_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3048        index_status: StatusCode::Deleted,
3049        worktree_status: StatusCode::Added,
3050    });
3051    const C_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3052        index_status: StatusCode::Unmodified,
3053        worktree_status: StatusCode::Modified,
3054    });
3055
3056    // Delete b.txt from the index, mark conflict as resolved,
3057    // and modify c.txt in the working copy.
3058    client_a.fs().set_index_for_repo(
3059        "/dir/.git".as_ref(),
3060        &[("a.txt".into(), "a".into()), ("c.txt".into(), "c".into())],
3061    );
3062    client_a
3063        .fs()
3064        .set_unmerged_paths_for_repo("/dir/.git".as_ref(), &[]);
3065    client_a
3066        .fs()
3067        .atomic_write("/dir/c.txt".into(), "CC".into())
3068        .await
3069        .unwrap();
3070
3071    // Wait for buffer_local_a to receive it
3072    executor.run_until_parked();
3073
3074    // Smoke test status reading
3075    project_local.read_with(cx_a, |project, cx| {
3076        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3077        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3078        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3079    });
3080
3081    project_remote.read_with(cx_b, |project, cx| {
3082        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3083        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3084        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3085    });
3086
3087    // And synchronization while joining
3088    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
3089    executor.run_until_parked();
3090
3091    project_remote_c.read_with(cx_c, |project, cx| {
3092        assert_status("a.txt", Some(A_STATUS_END), project, cx);
3093        assert_status("b.txt", Some(B_STATUS_END), project, cx);
3094        assert_status("c.txt", Some(C_STATUS_END), project, cx);
3095    });
3096}
3097
3098#[gpui::test(iterations = 10)]
3099async fn test_fs_operations(
3100    executor: BackgroundExecutor,
3101    cx_a: &mut TestAppContext,
3102    cx_b: &mut TestAppContext,
3103) {
3104    let mut server = TestServer::start(executor.clone()).await;
3105    let client_a = server.create_client(cx_a, "user_a").await;
3106    let client_b = server.create_client(cx_b, "user_b").await;
3107    server
3108        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3109        .await;
3110    let active_call_a = cx_a.read(ActiveCall::global);
3111
3112    client_a
3113        .fs()
3114        .insert_tree(
3115            "/dir",
3116            json!({
3117                "a.txt": "a-contents",
3118                "b.txt": "b-contents",
3119            }),
3120        )
3121        .await;
3122    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3123    let project_id = active_call_a
3124        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3125        .await
3126        .unwrap();
3127    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3128
3129    let worktree_a = project_a.read_with(cx_a, |project, cx| project.worktrees(cx).next().unwrap());
3130    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3131
3132    let entry = project_b
3133        .update(cx_b, |project, cx| {
3134            project.create_entry((worktree_id, "c.txt"), false, cx)
3135        })
3136        .await
3137        .unwrap()
3138        .to_included()
3139        .unwrap();
3140
3141    worktree_a.read_with(cx_a, |worktree, _| {
3142        assert_eq!(
3143            worktree
3144                .paths()
3145                .map(|p| p.to_string_lossy())
3146                .collect::<Vec<_>>(),
3147            ["a.txt", "b.txt", "c.txt"]
3148        );
3149    });
3150
3151    worktree_b.read_with(cx_b, |worktree, _| {
3152        assert_eq!(
3153            worktree
3154                .paths()
3155                .map(|p| p.to_string_lossy())
3156                .collect::<Vec<_>>(),
3157            ["a.txt", "b.txt", "c.txt"]
3158        );
3159    });
3160
3161    project_b
3162        .update(cx_b, |project, cx| {
3163            project.rename_entry(entry.id, Path::new("d.txt"), cx)
3164        })
3165        .await
3166        .unwrap()
3167        .to_included()
3168        .unwrap();
3169
3170    worktree_a.read_with(cx_a, |worktree, _| {
3171        assert_eq!(
3172            worktree
3173                .paths()
3174                .map(|p| p.to_string_lossy())
3175                .collect::<Vec<_>>(),
3176            ["a.txt", "b.txt", "d.txt"]
3177        );
3178    });
3179
3180    worktree_b.read_with(cx_b, |worktree, _| {
3181        assert_eq!(
3182            worktree
3183                .paths()
3184                .map(|p| p.to_string_lossy())
3185                .collect::<Vec<_>>(),
3186            ["a.txt", "b.txt", "d.txt"]
3187        );
3188    });
3189
3190    let dir_entry = project_b
3191        .update(cx_b, |project, cx| {
3192            project.create_entry((worktree_id, "DIR"), true, cx)
3193        })
3194        .await
3195        .unwrap()
3196        .to_included()
3197        .unwrap();
3198
3199    worktree_a.read_with(cx_a, |worktree, _| {
3200        assert_eq!(
3201            worktree
3202                .paths()
3203                .map(|p| p.to_string_lossy())
3204                .collect::<Vec<_>>(),
3205            ["DIR", "a.txt", "b.txt", "d.txt"]
3206        );
3207    });
3208
3209    worktree_b.read_with(cx_b, |worktree, _| {
3210        assert_eq!(
3211            worktree
3212                .paths()
3213                .map(|p| p.to_string_lossy())
3214                .collect::<Vec<_>>(),
3215            ["DIR", "a.txt", "b.txt", "d.txt"]
3216        );
3217    });
3218
3219    project_b
3220        .update(cx_b, |project, cx| {
3221            project.create_entry((worktree_id, "DIR/e.txt"), false, cx)
3222        })
3223        .await
3224        .unwrap()
3225        .to_included()
3226        .unwrap();
3227
3228    project_b
3229        .update(cx_b, |project, cx| {
3230            project.create_entry((worktree_id, "DIR/SUBDIR"), true, cx)
3231        })
3232        .await
3233        .unwrap()
3234        .to_included()
3235        .unwrap();
3236
3237    project_b
3238        .update(cx_b, |project, cx| {
3239            project.create_entry((worktree_id, "DIR/SUBDIR/f.txt"), false, cx)
3240        })
3241        .await
3242        .unwrap()
3243        .to_included()
3244        .unwrap();
3245
3246    worktree_a.read_with(cx_a, |worktree, _| {
3247        assert_eq!(
3248            worktree
3249                .paths()
3250                .map(|p| p.to_string_lossy())
3251                .collect::<Vec<_>>(),
3252            [
3253                "DIR",
3254                "DIR/SUBDIR",
3255                "DIR/SUBDIR/f.txt",
3256                "DIR/e.txt",
3257                "a.txt",
3258                "b.txt",
3259                "d.txt"
3260            ]
3261        );
3262    });
3263
3264    worktree_b.read_with(cx_b, |worktree, _| {
3265        assert_eq!(
3266            worktree
3267                .paths()
3268                .map(|p| p.to_string_lossy())
3269                .collect::<Vec<_>>(),
3270            [
3271                "DIR",
3272                "DIR/SUBDIR",
3273                "DIR/SUBDIR/f.txt",
3274                "DIR/e.txt",
3275                "a.txt",
3276                "b.txt",
3277                "d.txt"
3278            ]
3279        );
3280    });
3281
3282    project_b
3283        .update(cx_b, |project, cx| {
3284            project.copy_entry(entry.id, None, Path::new("f.txt"), cx)
3285        })
3286        .await
3287        .unwrap()
3288        .unwrap();
3289
3290    worktree_a.read_with(cx_a, |worktree, _| {
3291        assert_eq!(
3292            worktree
3293                .paths()
3294                .map(|p| p.to_string_lossy())
3295                .collect::<Vec<_>>(),
3296            [
3297                "DIR",
3298                "DIR/SUBDIR",
3299                "DIR/SUBDIR/f.txt",
3300                "DIR/e.txt",
3301                "a.txt",
3302                "b.txt",
3303                "d.txt",
3304                "f.txt"
3305            ]
3306        );
3307    });
3308
3309    worktree_b.read_with(cx_b, |worktree, _| {
3310        assert_eq!(
3311            worktree
3312                .paths()
3313                .map(|p| p.to_string_lossy())
3314                .collect::<Vec<_>>(),
3315            [
3316                "DIR",
3317                "DIR/SUBDIR",
3318                "DIR/SUBDIR/f.txt",
3319                "DIR/e.txt",
3320                "a.txt",
3321                "b.txt",
3322                "d.txt",
3323                "f.txt"
3324            ]
3325        );
3326    });
3327
3328    project_b
3329        .update(cx_b, |project, cx| {
3330            project.delete_entry(dir_entry.id, false, cx).unwrap()
3331        })
3332        .await
3333        .unwrap();
3334    executor.run_until_parked();
3335
3336    worktree_a.read_with(cx_a, |worktree, _| {
3337        assert_eq!(
3338            worktree
3339                .paths()
3340                .map(|p| p.to_string_lossy())
3341                .collect::<Vec<_>>(),
3342            ["a.txt", "b.txt", "d.txt", "f.txt"]
3343        );
3344    });
3345
3346    worktree_b.read_with(cx_b, |worktree, _| {
3347        assert_eq!(
3348            worktree
3349                .paths()
3350                .map(|p| p.to_string_lossy())
3351                .collect::<Vec<_>>(),
3352            ["a.txt", "b.txt", "d.txt", "f.txt"]
3353        );
3354    });
3355
3356    project_b
3357        .update(cx_b, |project, cx| {
3358            project.delete_entry(entry.id, false, cx).unwrap()
3359        })
3360        .await
3361        .unwrap();
3362
3363    worktree_a.read_with(cx_a, |worktree, _| {
3364        assert_eq!(
3365            worktree
3366                .paths()
3367                .map(|p| p.to_string_lossy())
3368                .collect::<Vec<_>>(),
3369            ["a.txt", "b.txt", "f.txt"]
3370        );
3371    });
3372
3373    worktree_b.read_with(cx_b, |worktree, _| {
3374        assert_eq!(
3375            worktree
3376                .paths()
3377                .map(|p| p.to_string_lossy())
3378                .collect::<Vec<_>>(),
3379            ["a.txt", "b.txt", "f.txt"]
3380        );
3381    });
3382}
3383
3384#[gpui::test(iterations = 10)]
3385async fn test_local_settings(
3386    executor: BackgroundExecutor,
3387    cx_a: &mut TestAppContext,
3388    cx_b: &mut TestAppContext,
3389) {
3390    let mut server = TestServer::start(executor.clone()).await;
3391    let client_a = server.create_client(cx_a, "user_a").await;
3392    let client_b = server.create_client(cx_b, "user_b").await;
3393    server
3394        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3395        .await;
3396    let active_call_a = cx_a.read(ActiveCall::global);
3397
3398    // As client A, open a project that contains some local settings files
3399    client_a
3400        .fs()
3401        .insert_tree(
3402            "/dir",
3403            json!({
3404                ".zed": {
3405                    "settings.json": r#"{ "tab_size": 2 }"#
3406                },
3407                "a": {
3408                    ".zed": {
3409                        "settings.json": r#"{ "tab_size": 8 }"#
3410                    },
3411                    "a.txt": "a-contents",
3412                },
3413                "b": {
3414                    "b.txt": "b-contents",
3415                }
3416            }),
3417        )
3418        .await;
3419    let (project_a, _) = client_a.build_local_project("/dir", cx_a).await;
3420    executor.run_until_parked();
3421    let project_id = active_call_a
3422        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3423        .await
3424        .unwrap();
3425    executor.run_until_parked();
3426
3427    // As client B, join that project and observe the local settings.
3428    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3429
3430    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3431    executor.run_until_parked();
3432    cx_b.read(|cx| {
3433        let store = cx.global::<SettingsStore>();
3434        assert_eq!(
3435            store
3436                .local_settings(worktree_b.read(cx).id())
3437                .collect::<Vec<_>>(),
3438            &[
3439                (Path::new("").into(), r#"{"tab_size":2}"#.to_string()),
3440                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3441            ]
3442        )
3443    });
3444
3445    // As client A, update a settings file. As Client B, see the changed settings.
3446    client_a
3447        .fs()
3448        .insert_file("/dir/.zed/settings.json", r#"{}"#.into())
3449        .await;
3450    executor.run_until_parked();
3451    cx_b.read(|cx| {
3452        let store = cx.global::<SettingsStore>();
3453        assert_eq!(
3454            store
3455                .local_settings(worktree_b.read(cx).id())
3456                .collect::<Vec<_>>(),
3457            &[
3458                (Path::new("").into(), r#"{}"#.to_string()),
3459                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3460            ]
3461        )
3462    });
3463
3464    // As client A, create and remove some settings files. As client B, see the changed settings.
3465    client_a
3466        .fs()
3467        .remove_file("/dir/.zed/settings.json".as_ref(), Default::default())
3468        .await
3469        .unwrap();
3470    client_a
3471        .fs()
3472        .create_dir("/dir/b/.zed".as_ref())
3473        .await
3474        .unwrap();
3475    client_a
3476        .fs()
3477        .insert_file("/dir/b/.zed/settings.json", r#"{"tab_size": 4}"#.into())
3478        .await;
3479    executor.run_until_parked();
3480    cx_b.read(|cx| {
3481        let store = cx.global::<SettingsStore>();
3482        assert_eq!(
3483            store
3484                .local_settings(worktree_b.read(cx).id())
3485                .collect::<Vec<_>>(),
3486            &[
3487                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3488                (Path::new("b").into(), r#"{"tab_size":4}"#.to_string()),
3489            ]
3490        )
3491    });
3492
3493    // As client B, disconnect.
3494    server.forbid_connections();
3495    server.disconnect_client(client_b.peer_id().unwrap());
3496
3497    // As client A, change and remove settings files while client B is disconnected.
3498    client_a
3499        .fs()
3500        .insert_file("/dir/a/.zed/settings.json", r#"{"hard_tabs":true}"#.into())
3501        .await;
3502    client_a
3503        .fs()
3504        .remove_file("/dir/b/.zed/settings.json".as_ref(), Default::default())
3505        .await
3506        .unwrap();
3507    executor.run_until_parked();
3508
3509    // As client B, reconnect and see the changed settings.
3510    server.allow_connections();
3511    executor.advance_clock(RECEIVE_TIMEOUT);
3512    cx_b.read(|cx| {
3513        let store = cx.global::<SettingsStore>();
3514        assert_eq!(
3515            store
3516                .local_settings(worktree_b.read(cx).id())
3517                .collect::<Vec<_>>(),
3518            &[(Path::new("a").into(), r#"{"hard_tabs":true}"#.to_string()),]
3519        )
3520    });
3521}
3522
3523#[gpui::test(iterations = 10)]
3524async fn test_buffer_conflict_after_save(
3525    executor: BackgroundExecutor,
3526    cx_a: &mut TestAppContext,
3527    cx_b: &mut TestAppContext,
3528) {
3529    let mut server = TestServer::start(executor.clone()).await;
3530    let client_a = server.create_client(cx_a, "user_a").await;
3531    let client_b = server.create_client(cx_b, "user_b").await;
3532    server
3533        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3534        .await;
3535    let active_call_a = cx_a.read(ActiveCall::global);
3536
3537    client_a
3538        .fs()
3539        .insert_tree(
3540            "/dir",
3541            json!({
3542                "a.txt": "a-contents",
3543            }),
3544        )
3545        .await;
3546    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3547    let project_id = active_call_a
3548        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3549        .await
3550        .unwrap();
3551    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3552
3553    // Open a buffer as client B
3554    let buffer_b = project_b
3555        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3556        .await
3557        .unwrap();
3558
3559    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "world ")], None, cx));
3560
3561    buffer_b.read_with(cx_b, |buf, _| {
3562        assert!(buf.is_dirty());
3563        assert!(!buf.has_conflict());
3564    });
3565
3566    project_b
3567        .update(cx_b, |project, cx| {
3568            project.save_buffer(buffer_b.clone(), cx)
3569        })
3570        .await
3571        .unwrap();
3572
3573    buffer_b.read_with(cx_b, |buffer_b, _| assert!(!buffer_b.is_dirty()));
3574
3575    buffer_b.read_with(cx_b, |buf, _| {
3576        assert!(!buf.has_conflict());
3577    });
3578
3579    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "hello ")], None, cx));
3580
3581    buffer_b.read_with(cx_b, |buf, _| {
3582        assert!(buf.is_dirty());
3583        assert!(!buf.has_conflict());
3584    });
3585}
3586
3587#[gpui::test(iterations = 10)]
3588async fn test_buffer_reloading(
3589    executor: BackgroundExecutor,
3590    cx_a: &mut TestAppContext,
3591    cx_b: &mut TestAppContext,
3592) {
3593    let mut server = TestServer::start(executor.clone()).await;
3594    let client_a = server.create_client(cx_a, "user_a").await;
3595    let client_b = server.create_client(cx_b, "user_b").await;
3596    server
3597        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3598        .await;
3599    let active_call_a = cx_a.read(ActiveCall::global);
3600
3601    client_a
3602        .fs()
3603        .insert_tree(
3604            "/dir",
3605            json!({
3606                "a.txt": "a\nb\nc",
3607            }),
3608        )
3609        .await;
3610    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3611    let project_id = active_call_a
3612        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3613        .await
3614        .unwrap();
3615    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3616
3617    // Open a buffer as client B
3618    let buffer_b = project_b
3619        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3620        .await
3621        .unwrap();
3622
3623    buffer_b.read_with(cx_b, |buf, _| {
3624        assert!(!buf.is_dirty());
3625        assert!(!buf.has_conflict());
3626        assert_eq!(buf.line_ending(), LineEnding::Unix);
3627    });
3628
3629    let new_contents = Rope::from("d\ne\nf");
3630    client_a
3631        .fs()
3632        .save("/dir/a.txt".as_ref(), &new_contents, LineEnding::Windows)
3633        .await
3634        .unwrap();
3635
3636    executor.run_until_parked();
3637
3638    buffer_b.read_with(cx_b, |buf, _| {
3639        assert_eq!(buf.text(), new_contents.to_string());
3640        assert!(!buf.is_dirty());
3641        assert!(!buf.has_conflict());
3642        assert_eq!(buf.line_ending(), LineEnding::Windows);
3643    });
3644}
3645
3646#[gpui::test(iterations = 10)]
3647async fn test_editing_while_guest_opens_buffer(
3648    executor: BackgroundExecutor,
3649    cx_a: &mut TestAppContext,
3650    cx_b: &mut TestAppContext,
3651) {
3652    let mut server = TestServer::start(executor.clone()).await;
3653    let client_a = server.create_client(cx_a, "user_a").await;
3654    let client_b = server.create_client(cx_b, "user_b").await;
3655    server
3656        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3657        .await;
3658    let active_call_a = cx_a.read(ActiveCall::global);
3659
3660    client_a
3661        .fs()
3662        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3663        .await;
3664    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3665    let project_id = active_call_a
3666        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3667        .await
3668        .unwrap();
3669    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3670
3671    // Open a buffer as client A
3672    let buffer_a = project_a
3673        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3674        .await
3675        .unwrap();
3676
3677    // Start opening the same buffer as client B
3678    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3679    let buffer_b = cx_b.executor().spawn(open_buffer);
3680
3681    // Edit the buffer as client A while client B is still opening it.
3682    cx_b.executor().simulate_random_delay().await;
3683    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "X")], None, cx));
3684    cx_b.executor().simulate_random_delay().await;
3685    buffer_a.update(cx_a, |buf, cx| buf.edit([(1..1, "Y")], None, cx));
3686
3687    let text = buffer_a.read_with(cx_a, |buf, _| buf.text());
3688    let buffer_b = buffer_b.await.unwrap();
3689    executor.run_until_parked();
3690
3691    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), text));
3692}
3693
3694#[gpui::test(iterations = 10)]
3695async fn test_leaving_worktree_while_opening_buffer(
3696    executor: BackgroundExecutor,
3697    cx_a: &mut TestAppContext,
3698    cx_b: &mut TestAppContext,
3699) {
3700    let mut server = TestServer::start(executor.clone()).await;
3701    let client_a = server.create_client(cx_a, "user_a").await;
3702    let client_b = server.create_client(cx_b, "user_b").await;
3703    server
3704        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3705        .await;
3706    let active_call_a = cx_a.read(ActiveCall::global);
3707
3708    client_a
3709        .fs()
3710        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3711        .await;
3712    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3713    let project_id = active_call_a
3714        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3715        .await
3716        .unwrap();
3717    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3718
3719    // See that a guest has joined as client A.
3720    executor.run_until_parked();
3721
3722    project_a.read_with(cx_a, |p, _| assert_eq!(p.collaborators().len(), 1));
3723
3724    // Begin opening a buffer as client B, but leave the project before the open completes.
3725    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3726    let buffer_b = cx_b.executor().spawn(open_buffer);
3727    cx_b.update(|_| drop(project_b));
3728    drop(buffer_b);
3729
3730    // See that the guest has left.
3731    executor.run_until_parked();
3732
3733    project_a.read_with(cx_a, |p, _| assert!(p.collaborators().is_empty()));
3734}
3735
3736#[gpui::test(iterations = 10)]
3737async fn test_canceling_buffer_opening(
3738    executor: BackgroundExecutor,
3739    cx_a: &mut TestAppContext,
3740    cx_b: &mut TestAppContext,
3741) {
3742    let mut server = TestServer::start(executor.clone()).await;
3743    let client_a = server.create_client(cx_a, "user_a").await;
3744    let client_b = server.create_client(cx_b, "user_b").await;
3745    server
3746        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3747        .await;
3748    let active_call_a = cx_a.read(ActiveCall::global);
3749
3750    client_a
3751        .fs()
3752        .insert_tree(
3753            "/dir",
3754            json!({
3755                "a.txt": "abc",
3756            }),
3757        )
3758        .await;
3759    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3760    let project_id = active_call_a
3761        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3762        .await
3763        .unwrap();
3764    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3765
3766    let buffer_a = project_a
3767        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3768        .await
3769        .unwrap();
3770
3771    // Open a buffer as client B but cancel after a random amount of time.
3772    let buffer_b = project_b.update(cx_b, |p, cx| {
3773        p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3774    });
3775    executor.simulate_random_delay().await;
3776    drop(buffer_b);
3777
3778    // Try opening the same buffer again as client B, and ensure we can
3779    // still do it despite the cancellation above.
3780    let buffer_b = project_b
3781        .update(cx_b, |p, cx| {
3782            p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3783        })
3784        .await
3785        .unwrap();
3786
3787    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), "abc"));
3788}
3789
3790#[gpui::test(iterations = 10)]
3791async fn test_leaving_project(
3792    executor: BackgroundExecutor,
3793    cx_a: &mut TestAppContext,
3794    cx_b: &mut TestAppContext,
3795    cx_c: &mut TestAppContext,
3796) {
3797    let mut server = TestServer::start(executor.clone()).await;
3798    let client_a = server.create_client(cx_a, "user_a").await;
3799    let client_b = server.create_client(cx_b, "user_b").await;
3800    let client_c = server.create_client(cx_c, "user_c").await;
3801    server
3802        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3803        .await;
3804    let active_call_a = cx_a.read(ActiveCall::global);
3805
3806    client_a
3807        .fs()
3808        .insert_tree(
3809            "/a",
3810            json!({
3811                "a.txt": "a-contents",
3812                "b.txt": "b-contents",
3813            }),
3814        )
3815        .await;
3816    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
3817    let project_id = active_call_a
3818        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3819        .await
3820        .unwrap();
3821    let project_b1 = client_b.join_remote_project(project_id, cx_b).await;
3822    let project_c = client_c.join_remote_project(project_id, cx_c).await;
3823
3824    // Client A sees that a guest has joined.
3825    executor.run_until_parked();
3826
3827    project_a.read_with(cx_a, |project, _| {
3828        assert_eq!(project.collaborators().len(), 2);
3829    });
3830
3831    project_b1.read_with(cx_b, |project, _| {
3832        assert_eq!(project.collaborators().len(), 2);
3833    });
3834
3835    project_c.read_with(cx_c, |project, _| {
3836        assert_eq!(project.collaborators().len(), 2);
3837    });
3838
3839    // Client B opens a buffer.
3840    let buffer_b1 = project_b1
3841        .update(cx_b, |project, cx| {
3842            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3843            project.open_buffer((worktree_id, "a.txt"), cx)
3844        })
3845        .await
3846        .unwrap();
3847
3848    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3849
3850    // Drop client B's project and ensure client A and client C observe client B leaving.
3851    cx_b.update(|_| drop(project_b1));
3852    executor.run_until_parked();
3853
3854    project_a.read_with(cx_a, |project, _| {
3855        assert_eq!(project.collaborators().len(), 1);
3856    });
3857
3858    project_c.read_with(cx_c, |project, _| {
3859        assert_eq!(project.collaborators().len(), 1);
3860    });
3861
3862    // Client B re-joins the project and can open buffers as before.
3863    let project_b2 = client_b.join_remote_project(project_id, cx_b).await;
3864    executor.run_until_parked();
3865
3866    project_a.read_with(cx_a, |project, _| {
3867        assert_eq!(project.collaborators().len(), 2);
3868    });
3869
3870    project_b2.read_with(cx_b, |project, _| {
3871        assert_eq!(project.collaborators().len(), 2);
3872    });
3873
3874    project_c.read_with(cx_c, |project, _| {
3875        assert_eq!(project.collaborators().len(), 2);
3876    });
3877
3878    let buffer_b2 = project_b2
3879        .update(cx_b, |project, cx| {
3880            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3881            project.open_buffer((worktree_id, "a.txt"), cx)
3882        })
3883        .await
3884        .unwrap();
3885
3886    buffer_b2.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3887
3888    project_a.read_with(cx_a, |project, _| {
3889        assert_eq!(project.collaborators().len(), 2);
3890    });
3891
3892    // Drop client B's connection and ensure client A and client C observe client B leaving.
3893    client_b.disconnect(&cx_b.to_async());
3894    executor.advance_clock(RECONNECT_TIMEOUT);
3895
3896    project_a.read_with(cx_a, |project, _| {
3897        assert_eq!(project.collaborators().len(), 1);
3898    });
3899
3900    project_b2.read_with(cx_b, |project, cx| {
3901        assert!(project.is_disconnected(cx));
3902    });
3903
3904    project_c.read_with(cx_c, |project, _| {
3905        assert_eq!(project.collaborators().len(), 1);
3906    });
3907
3908    // Client B can't join the project, unless they re-join the room.
3909    cx_b.spawn(|cx| {
3910        Project::in_room(
3911            project_id,
3912            client_b.app_state.client.clone(),
3913            client_b.user_store().clone(),
3914            client_b.language_registry().clone(),
3915            FakeFs::new(cx.background_executor().clone()),
3916            cx,
3917        )
3918    })
3919    .await
3920    .unwrap_err();
3921
3922    // Simulate connection loss for client C and ensure client A observes client C leaving the project.
3923    client_c.wait_for_current_user(cx_c).await;
3924    server.forbid_connections();
3925    server.disconnect_client(client_c.peer_id().unwrap());
3926    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
3927    executor.run_until_parked();
3928
3929    project_a.read_with(cx_a, |project, _| {
3930        assert_eq!(project.collaborators().len(), 0);
3931    });
3932
3933    project_b2.read_with(cx_b, |project, cx| {
3934        assert!(project.is_disconnected(cx));
3935    });
3936
3937    project_c.read_with(cx_c, |project, cx| {
3938        assert!(project.is_disconnected(cx));
3939    });
3940}
3941
3942#[gpui::test(iterations = 10)]
3943async fn test_collaborating_with_diagnostics(
3944    executor: BackgroundExecutor,
3945    cx_a: &mut TestAppContext,
3946    cx_b: &mut TestAppContext,
3947    cx_c: &mut TestAppContext,
3948) {
3949    let mut server = TestServer::start(executor.clone()).await;
3950    let client_a = server.create_client(cx_a, "user_a").await;
3951    let client_b = server.create_client(cx_b, "user_b").await;
3952    let client_c = server.create_client(cx_c, "user_c").await;
3953    server
3954        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3955        .await;
3956    let active_call_a = cx_a.read(ActiveCall::global);
3957
3958    client_a.language_registry().add(Arc::new(Language::new(
3959        LanguageConfig {
3960            name: "Rust".into(),
3961            matcher: LanguageMatcher {
3962                path_suffixes: vec!["rs".to_string()],
3963                ..Default::default()
3964            },
3965            ..Default::default()
3966        },
3967        Some(tree_sitter_rust::LANGUAGE.into()),
3968    )));
3969    let mut fake_language_servers = client_a
3970        .language_registry()
3971        .register_fake_lsp("Rust", Default::default());
3972
3973    // Share a project as client A
3974    client_a
3975        .fs()
3976        .insert_tree(
3977            "/a",
3978            json!({
3979                "a.rs": "let one = two",
3980                "other.rs": "",
3981            }),
3982        )
3983        .await;
3984    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
3985
3986    // Cause the language server to start.
3987    let _buffer = project_a
3988        .update(cx_a, |project, cx| {
3989            project.open_local_buffer_with_lsp("/a/other.rs", cx)
3990        })
3991        .await
3992        .unwrap();
3993
3994    // Simulate a language server reporting errors for a file.
3995    let mut fake_language_server = fake_language_servers.next().await.unwrap();
3996    fake_language_server
3997        .receive_notification::<lsp::notification::DidOpenTextDocument>()
3998        .await;
3999    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4000        &lsp::PublishDiagnosticsParams {
4001            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4002            version: None,
4003            diagnostics: vec![lsp::Diagnostic {
4004                severity: Some(lsp::DiagnosticSeverity::WARNING),
4005                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4006                message: "message 0".to_string(),
4007                ..Default::default()
4008            }],
4009        },
4010    );
4011
4012    // Client A shares the project and, simultaneously, the language server
4013    // publishes a diagnostic. This is done to ensure that the server always
4014    // observes the latest diagnostics for a worktree.
4015    let project_id = active_call_a
4016        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4017        .await
4018        .unwrap();
4019    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4020        &lsp::PublishDiagnosticsParams {
4021            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4022            version: None,
4023            diagnostics: vec![lsp::Diagnostic {
4024                severity: Some(lsp::DiagnosticSeverity::ERROR),
4025                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4026                message: "message 1".to_string(),
4027                ..Default::default()
4028            }],
4029        },
4030    );
4031
4032    // Join the worktree as client B.
4033    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4034
4035    // Wait for server to see the diagnostics update.
4036    executor.run_until_parked();
4037
4038    // Ensure client B observes the new diagnostics.
4039
4040    project_b.read_with(cx_b, |project, cx| {
4041        assert_eq!(
4042            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4043            &[(
4044                ProjectPath {
4045                    worktree_id,
4046                    path: Arc::from(Path::new("a.rs")),
4047                },
4048                LanguageServerId(0),
4049                DiagnosticSummary {
4050                    error_count: 1,
4051                    warning_count: 0,
4052                },
4053            )]
4054        )
4055    });
4056
4057    // Join project as client C and observe the diagnostics.
4058    let project_c = client_c.join_remote_project(project_id, cx_c).await;
4059    executor.run_until_parked();
4060    let project_c_diagnostic_summaries =
4061        Rc::new(RefCell::new(project_c.read_with(cx_c, |project, cx| {
4062            project.diagnostic_summaries(false, cx).collect::<Vec<_>>()
4063        })));
4064    project_c.update(cx_c, |_, cx| {
4065        let summaries = project_c_diagnostic_summaries.clone();
4066        cx.subscribe(&project_c, {
4067            move |p, _, event, cx| {
4068                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4069                    *summaries.borrow_mut() = p.diagnostic_summaries(false, cx).collect();
4070                }
4071            }
4072        })
4073        .detach();
4074    });
4075
4076    executor.run_until_parked();
4077    assert_eq!(
4078        project_c_diagnostic_summaries.borrow().as_slice(),
4079        &[(
4080            ProjectPath {
4081                worktree_id,
4082                path: Arc::from(Path::new("a.rs")),
4083            },
4084            LanguageServerId(0),
4085            DiagnosticSummary {
4086                error_count: 1,
4087                warning_count: 0,
4088            },
4089        )]
4090    );
4091
4092    // Simulate a language server reporting more errors for a file.
4093    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4094        &lsp::PublishDiagnosticsParams {
4095            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4096            version: None,
4097            diagnostics: vec![
4098                lsp::Diagnostic {
4099                    severity: Some(lsp::DiagnosticSeverity::ERROR),
4100                    range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4101                    message: "message 1".to_string(),
4102                    ..Default::default()
4103                },
4104                lsp::Diagnostic {
4105                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4106                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 13)),
4107                    message: "message 2".to_string(),
4108                    ..Default::default()
4109                },
4110            ],
4111        },
4112    );
4113
4114    // Clients B and C get the updated summaries
4115    executor.run_until_parked();
4116
4117    project_b.read_with(cx_b, |project, cx| {
4118        assert_eq!(
4119            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4120            [(
4121                ProjectPath {
4122                    worktree_id,
4123                    path: Arc::from(Path::new("a.rs")),
4124                },
4125                LanguageServerId(0),
4126                DiagnosticSummary {
4127                    error_count: 1,
4128                    warning_count: 1,
4129                },
4130            )]
4131        );
4132    });
4133
4134    project_c.read_with(cx_c, |project, cx| {
4135        assert_eq!(
4136            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4137            [(
4138                ProjectPath {
4139                    worktree_id,
4140                    path: Arc::from(Path::new("a.rs")),
4141                },
4142                LanguageServerId(0),
4143                DiagnosticSummary {
4144                    error_count: 1,
4145                    warning_count: 1,
4146                },
4147            )]
4148        );
4149    });
4150
4151    // Open the file with the errors on client B. They should be present.
4152    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4153    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4154
4155    buffer_b.read_with(cx_b, |buffer, _| {
4156        assert_eq!(
4157            buffer
4158                .snapshot()
4159                .diagnostics_in_range::<_, Point>(0..buffer.len(), false)
4160                .collect::<Vec<_>>(),
4161            &[
4162                DiagnosticEntry {
4163                    range: Point::new(0, 4)..Point::new(0, 7),
4164                    diagnostic: Diagnostic {
4165                        group_id: 2,
4166                        message: "message 1".to_string(),
4167                        severity: lsp::DiagnosticSeverity::ERROR,
4168                        is_primary: true,
4169                        ..Default::default()
4170                    }
4171                },
4172                DiagnosticEntry {
4173                    range: Point::new(0, 10)..Point::new(0, 13),
4174                    diagnostic: Diagnostic {
4175                        group_id: 3,
4176                        severity: lsp::DiagnosticSeverity::WARNING,
4177                        message: "message 2".to_string(),
4178                        is_primary: true,
4179                        ..Default::default()
4180                    }
4181                }
4182            ]
4183        );
4184    });
4185
4186    // Simulate a language server reporting no errors for a file.
4187    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4188        &lsp::PublishDiagnosticsParams {
4189            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4190            version: None,
4191            diagnostics: vec![],
4192        },
4193    );
4194    executor.run_until_parked();
4195
4196    project_a.read_with(cx_a, |project, cx| {
4197        assert_eq!(
4198            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4199            []
4200        )
4201    });
4202
4203    project_b.read_with(cx_b, |project, cx| {
4204        assert_eq!(
4205            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4206            []
4207        )
4208    });
4209
4210    project_c.read_with(cx_c, |project, cx| {
4211        assert_eq!(
4212            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4213            []
4214        )
4215    });
4216}
4217
4218#[gpui::test(iterations = 10)]
4219async fn test_collaborating_with_lsp_progress_updates_and_diagnostics_ordering(
4220    executor: BackgroundExecutor,
4221    cx_a: &mut TestAppContext,
4222    cx_b: &mut TestAppContext,
4223) {
4224    let mut server = TestServer::start(executor.clone()).await;
4225    let client_a = server.create_client(cx_a, "user_a").await;
4226    let client_b = server.create_client(cx_b, "user_b").await;
4227    server
4228        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4229        .await;
4230
4231    client_a.language_registry().add(rust_lang());
4232    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4233        "Rust",
4234        FakeLspAdapter {
4235            disk_based_diagnostics_progress_token: Some("the-disk-based-token".into()),
4236            disk_based_diagnostics_sources: vec!["the-disk-based-diagnostics-source".into()],
4237            ..Default::default()
4238        },
4239    );
4240
4241    let file_names = &["one.rs", "two.rs", "three.rs", "four.rs", "five.rs"];
4242    client_a
4243        .fs()
4244        .insert_tree(
4245            "/test",
4246            json!({
4247                "one.rs": "const ONE: usize = 1;",
4248                "two.rs": "const TWO: usize = 2;",
4249                "three.rs": "const THREE: usize = 3;",
4250                "four.rs": "const FOUR: usize = 3;",
4251                "five.rs": "const FIVE: usize = 3;",
4252            }),
4253        )
4254        .await;
4255
4256    let (project_a, worktree_id) = client_a.build_local_project("/test", cx_a).await;
4257
4258    // Share a project as client A
4259    let active_call_a = cx_a.read(ActiveCall::global);
4260    let project_id = active_call_a
4261        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4262        .await
4263        .unwrap();
4264
4265    // Join the project as client B and open all three files.
4266    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4267    let guest_buffers = futures::future::try_join_all(file_names.iter().map(|file_name| {
4268        project_b.update(cx_b, |p, cx| {
4269            p.open_buffer_with_lsp((worktree_id, file_name), cx)
4270        })
4271    }))
4272    .await
4273    .unwrap();
4274
4275    // Simulate a language server reporting errors for a file.
4276    let fake_language_server = fake_language_servers.next().await.unwrap();
4277    fake_language_server
4278        .request::<lsp::request::WorkDoneProgressCreate>(lsp::WorkDoneProgressCreateParams {
4279            token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4280        })
4281        .await
4282        .unwrap();
4283    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4284        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4285        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::Begin(
4286            lsp::WorkDoneProgressBegin {
4287                title: "Progress Began".into(),
4288                ..Default::default()
4289            },
4290        )),
4291    });
4292    for file_name in file_names {
4293        fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4294            &lsp::PublishDiagnosticsParams {
4295                uri: lsp::Url::from_file_path(Path::new("/test").join(file_name)).unwrap(),
4296                version: None,
4297                diagnostics: vec![lsp::Diagnostic {
4298                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4299                    source: Some("the-disk-based-diagnostics-source".into()),
4300                    range: lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
4301                    message: "message one".to_string(),
4302                    ..Default::default()
4303                }],
4304            },
4305        );
4306    }
4307    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4308        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4309        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::End(
4310            lsp::WorkDoneProgressEnd { message: None },
4311        )),
4312    });
4313
4314    // When the "disk base diagnostics finished" message is received, the buffers'
4315    // diagnostics are expected to be present.
4316    let disk_based_diagnostics_finished = Arc::new(AtomicBool::new(false));
4317    project_b.update(cx_b, {
4318        let project_b = project_b.clone();
4319        let disk_based_diagnostics_finished = disk_based_diagnostics_finished.clone();
4320        move |_, cx| {
4321            cx.subscribe(&project_b, move |_, _, event, cx| {
4322                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4323                    disk_based_diagnostics_finished.store(true, SeqCst);
4324                    for (buffer, _) in &guest_buffers {
4325                        assert_eq!(
4326                            buffer
4327                                .read(cx)
4328                                .snapshot()
4329                                .diagnostics_in_range::<_, usize>(0..5, false)
4330                                .count(),
4331                            1,
4332                            "expected a diagnostic for buffer {:?}",
4333                            buffer.read(cx).file().unwrap().path(),
4334                        );
4335                    }
4336                }
4337            })
4338            .detach();
4339        }
4340    });
4341
4342    executor.run_until_parked();
4343    assert!(disk_based_diagnostics_finished.load(SeqCst));
4344}
4345
4346#[gpui::test(iterations = 10)]
4347async fn test_reloading_buffer_manually(
4348    executor: BackgroundExecutor,
4349    cx_a: &mut TestAppContext,
4350    cx_b: &mut TestAppContext,
4351) {
4352    let mut server = TestServer::start(executor.clone()).await;
4353    let client_a = server.create_client(cx_a, "user_a").await;
4354    let client_b = server.create_client(cx_b, "user_b").await;
4355    server
4356        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4357        .await;
4358    let active_call_a = cx_a.read(ActiveCall::global);
4359
4360    client_a
4361        .fs()
4362        .insert_tree("/a", json!({ "a.rs": "let one = 1;" }))
4363        .await;
4364    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
4365    let buffer_a = project_a
4366        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4367        .await
4368        .unwrap();
4369    let project_id = active_call_a
4370        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4371        .await
4372        .unwrap();
4373
4374    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4375
4376    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4377    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4378    buffer_b.update(cx_b, |buffer, cx| {
4379        buffer.edit([(4..7, "six")], None, cx);
4380        buffer.edit([(10..11, "6")], None, cx);
4381        assert_eq!(buffer.text(), "let six = 6;");
4382        assert!(buffer.is_dirty());
4383        assert!(!buffer.has_conflict());
4384    });
4385    executor.run_until_parked();
4386
4387    buffer_a.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "let six = 6;"));
4388
4389    client_a
4390        .fs()
4391        .save(
4392            "/a/a.rs".as_ref(),
4393            &Rope::from("let seven = 7;"),
4394            LineEnding::Unix,
4395        )
4396        .await
4397        .unwrap();
4398    executor.run_until_parked();
4399
4400    buffer_a.read_with(cx_a, |buffer, _| assert!(buffer.has_conflict()));
4401
4402    buffer_b.read_with(cx_b, |buffer, _| assert!(buffer.has_conflict()));
4403
4404    project_b
4405        .update(cx_b, |project, cx| {
4406            project.reload_buffers(HashSet::from_iter([buffer_b.clone()]), true, cx)
4407        })
4408        .await
4409        .unwrap();
4410
4411    buffer_a.read_with(cx_a, |buffer, _| {
4412        assert_eq!(buffer.text(), "let seven = 7;");
4413        assert!(!buffer.is_dirty());
4414        assert!(!buffer.has_conflict());
4415    });
4416
4417    buffer_b.read_with(cx_b, |buffer, _| {
4418        assert_eq!(buffer.text(), "let seven = 7;");
4419        assert!(!buffer.is_dirty());
4420        assert!(!buffer.has_conflict());
4421    });
4422
4423    buffer_a.update(cx_a, |buffer, cx| {
4424        // Undoing on the host is a no-op when the reload was initiated by the guest.
4425        buffer.undo(cx);
4426        assert_eq!(buffer.text(), "let seven = 7;");
4427        assert!(!buffer.is_dirty());
4428        assert!(!buffer.has_conflict());
4429    });
4430    buffer_b.update(cx_b, |buffer, cx| {
4431        // Undoing on the guest rolls back the buffer to before it was reloaded but the conflict gets cleared.
4432        buffer.undo(cx);
4433        assert_eq!(buffer.text(), "let six = 6;");
4434        assert!(buffer.is_dirty());
4435        assert!(!buffer.has_conflict());
4436    });
4437}
4438
4439#[gpui::test(iterations = 10)]
4440async fn test_formatting_buffer(
4441    executor: BackgroundExecutor,
4442    cx_a: &mut TestAppContext,
4443    cx_b: &mut TestAppContext,
4444) {
4445    let mut server = TestServer::start(executor.clone()).await;
4446    let client_a = server.create_client(cx_a, "user_a").await;
4447    let client_b = server.create_client(cx_b, "user_b").await;
4448    server
4449        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4450        .await;
4451    let active_call_a = cx_a.read(ActiveCall::global);
4452
4453    client_a.language_registry().add(rust_lang());
4454    let mut fake_language_servers = client_a
4455        .language_registry()
4456        .register_fake_lsp("Rust", FakeLspAdapter::default());
4457
4458    // Here we insert a fake tree with a directory that exists on disk. This is needed
4459    // because later we'll invoke a command, which requires passing a working directory
4460    // that points to a valid location on disk.
4461    let directory = env::current_dir().unwrap();
4462    client_a
4463        .fs()
4464        .insert_tree(&directory, json!({ "a.rs": "let one = \"two\"" }))
4465        .await;
4466    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4467    let project_id = active_call_a
4468        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4469        .await
4470        .unwrap();
4471    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4472
4473    let buffer_b = project_b
4474        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4475        .await
4476        .unwrap();
4477
4478    let _handle = project_b.update(cx_b, |project, cx| {
4479        project.register_buffer_with_language_servers(&buffer_b, cx)
4480    });
4481    let fake_language_server = fake_language_servers.next().await.unwrap();
4482    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4483        Ok(Some(vec![
4484            lsp::TextEdit {
4485                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
4486                new_text: "h".to_string(),
4487            },
4488            lsp::TextEdit {
4489                range: lsp::Range::new(lsp::Position::new(0, 7), lsp::Position::new(0, 7)),
4490                new_text: "y".to_string(),
4491            },
4492        ]))
4493    });
4494
4495    project_b
4496        .update(cx_b, |project, cx| {
4497            project.format(
4498                HashSet::from_iter([buffer_b.clone()]),
4499                LspFormatTarget::Buffers,
4500                true,
4501                FormatTrigger::Save,
4502                cx,
4503            )
4504        })
4505        .await
4506        .unwrap();
4507
4508    // The edits from the LSP are applied, and a final newline is added.
4509    assert_eq!(
4510        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4511        "let honey = \"two\"\n"
4512    );
4513
4514    // Ensure buffer can be formatted using an external command. Notice how the
4515    // host's configuration is honored as opposed to using the guest's settings.
4516    cx_a.update(|cx| {
4517        SettingsStore::update_global(cx, |store, cx| {
4518            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4519                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4520                    vec![Formatter::External {
4521                        command: "awk".into(),
4522                        arguments: Some(vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into()),
4523                    }]
4524                    .into(),
4525                )));
4526            });
4527        });
4528    });
4529
4530    executor.allow_parking();
4531    project_b
4532        .update(cx_b, |project, cx| {
4533            project.format(
4534                HashSet::from_iter([buffer_b.clone()]),
4535                LspFormatTarget::Buffers,
4536                true,
4537                FormatTrigger::Save,
4538                cx,
4539            )
4540        })
4541        .await
4542        .unwrap();
4543    assert_eq!(
4544        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4545        format!("let honey = \"{}/a.rs\"\n", directory.to_str().unwrap())
4546    );
4547}
4548
4549#[gpui::test(iterations = 10)]
4550async fn test_prettier_formatting_buffer(
4551    executor: BackgroundExecutor,
4552    cx_a: &mut TestAppContext,
4553    cx_b: &mut TestAppContext,
4554) {
4555    let mut server = TestServer::start(executor.clone()).await;
4556    let client_a = server.create_client(cx_a, "user_a").await;
4557    let client_b = server.create_client(cx_b, "user_b").await;
4558    server
4559        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4560        .await;
4561    let active_call_a = cx_a.read(ActiveCall::global);
4562
4563    let test_plugin = "test_plugin";
4564
4565    client_a.language_registry().add(Arc::new(Language::new(
4566        LanguageConfig {
4567            name: "TypeScript".into(),
4568            matcher: LanguageMatcher {
4569                path_suffixes: vec!["ts".to_string()],
4570                ..Default::default()
4571            },
4572            ..Default::default()
4573        },
4574        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
4575    )));
4576    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4577        "TypeScript",
4578        FakeLspAdapter {
4579            prettier_plugins: vec![test_plugin],
4580            ..Default::default()
4581        },
4582    );
4583
4584    // Here we insert a fake tree with a directory that exists on disk. This is needed
4585    // because later we'll invoke a command, which requires passing a working directory
4586    // that points to a valid location on disk.
4587    let directory = env::current_dir().unwrap();
4588    let buffer_text = "let one = \"two\"";
4589    client_a
4590        .fs()
4591        .insert_tree(&directory, json!({ "a.ts": buffer_text }))
4592        .await;
4593    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4594    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
4595    let open_buffer = project_a.update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.ts"), cx));
4596    let buffer_a = cx_a.executor().spawn(open_buffer).await.unwrap();
4597
4598    let project_id = active_call_a
4599        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4600        .await
4601        .unwrap();
4602    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4603    let (buffer_b, _) = project_b
4604        .update(cx_b, |p, cx| {
4605            p.open_buffer_with_lsp((worktree_id, "a.ts"), cx)
4606        })
4607        .await
4608        .unwrap();
4609
4610    cx_a.update(|cx| {
4611        SettingsStore::update_global(cx, |store, cx| {
4612            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4613                file.defaults.formatter = Some(SelectedFormatter::Auto);
4614                file.defaults.prettier = Some(PrettierSettings {
4615                    allowed: true,
4616                    ..PrettierSettings::default()
4617                });
4618            });
4619        });
4620    });
4621    cx_b.update(|cx| {
4622        SettingsStore::update_global(cx, |store, cx| {
4623            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4624                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4625                    vec![Formatter::LanguageServer { name: None }].into(),
4626                )));
4627                file.defaults.prettier = Some(PrettierSettings {
4628                    allowed: true,
4629                    ..PrettierSettings::default()
4630                });
4631            });
4632        });
4633    });
4634    let fake_language_server = fake_language_servers.next().await.unwrap();
4635    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4636        panic!(
4637            "Unexpected: prettier should be preferred since it's enabled and language supports it"
4638        )
4639    });
4640
4641    project_b
4642        .update(cx_b, |project, cx| {
4643            project.format(
4644                HashSet::from_iter([buffer_b.clone()]),
4645                LspFormatTarget::Buffers,
4646                true,
4647                FormatTrigger::Save,
4648                cx,
4649            )
4650        })
4651        .await
4652        .unwrap();
4653
4654    executor.run_until_parked();
4655    assert_eq!(
4656        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4657        buffer_text.to_string() + "\n" + prettier_format_suffix,
4658        "Prettier formatting was not applied to client buffer after client's request"
4659    );
4660
4661    project_a
4662        .update(cx_a, |project, cx| {
4663            project.format(
4664                HashSet::from_iter([buffer_a.clone()]),
4665                LspFormatTarget::Buffers,
4666                true,
4667                FormatTrigger::Manual,
4668                cx,
4669            )
4670        })
4671        .await
4672        .unwrap();
4673
4674    executor.run_until_parked();
4675    assert_eq!(
4676        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4677        buffer_text.to_string() + "\n" + prettier_format_suffix + "\n" + prettier_format_suffix,
4678        "Prettier formatting was not applied to client buffer after host's request"
4679    );
4680}
4681
4682#[gpui::test(iterations = 10)]
4683async fn test_definition(
4684    executor: BackgroundExecutor,
4685    cx_a: &mut TestAppContext,
4686    cx_b: &mut TestAppContext,
4687) {
4688    let mut server = TestServer::start(executor.clone()).await;
4689    let client_a = server.create_client(cx_a, "user_a").await;
4690    let client_b = server.create_client(cx_b, "user_b").await;
4691    server
4692        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4693        .await;
4694    let active_call_a = cx_a.read(ActiveCall::global);
4695
4696    let mut fake_language_servers = client_a
4697        .language_registry()
4698        .register_fake_lsp("Rust", Default::default());
4699    client_a.language_registry().add(rust_lang());
4700
4701    client_a
4702        .fs()
4703        .insert_tree(
4704            "/root",
4705            json!({
4706                "dir-1": {
4707                    "a.rs": "const ONE: usize = b::TWO + b::THREE;",
4708                },
4709                "dir-2": {
4710                    "b.rs": "const TWO: c::T2 = 2;\nconst THREE: usize = 3;",
4711                    "c.rs": "type T2 = usize;",
4712                }
4713            }),
4714        )
4715        .await;
4716    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4717    let project_id = active_call_a
4718        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4719        .await
4720        .unwrap();
4721    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4722
4723    // Open the file on client B.
4724    let (buffer_b, _handle) = project_b
4725        .update(cx_b, |p, cx| {
4726            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
4727        })
4728        .await
4729        .unwrap();
4730
4731    // Request the definition of a symbol as the guest.
4732    let fake_language_server = fake_language_servers.next().await.unwrap();
4733    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4734        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4735            lsp::Location::new(
4736                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4737                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
4738            ),
4739        )))
4740    });
4741
4742    let definitions_1 = project_b
4743        .update(cx_b, |p, cx| p.definition(&buffer_b, 23, cx))
4744        .await
4745        .unwrap();
4746    cx_b.read(|cx| {
4747        assert_eq!(definitions_1.len(), 1);
4748        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4749        let target_buffer = definitions_1[0].target.buffer.read(cx);
4750        assert_eq!(
4751            target_buffer.text(),
4752            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4753        );
4754        assert_eq!(
4755            definitions_1[0].target.range.to_point(target_buffer),
4756            Point::new(0, 6)..Point::new(0, 9)
4757        );
4758    });
4759
4760    // Try getting more definitions for the same buffer, ensuring the buffer gets reused from
4761    // the previous call to `definition`.
4762    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4763        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4764            lsp::Location::new(
4765                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4766                lsp::Range::new(lsp::Position::new(1, 6), lsp::Position::new(1, 11)),
4767            ),
4768        )))
4769    });
4770
4771    let definitions_2 = project_b
4772        .update(cx_b, |p, cx| p.definition(&buffer_b, 33, cx))
4773        .await
4774        .unwrap();
4775    cx_b.read(|cx| {
4776        assert_eq!(definitions_2.len(), 1);
4777        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4778        let target_buffer = definitions_2[0].target.buffer.read(cx);
4779        assert_eq!(
4780            target_buffer.text(),
4781            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4782        );
4783        assert_eq!(
4784            definitions_2[0].target.range.to_point(target_buffer),
4785            Point::new(1, 6)..Point::new(1, 11)
4786        );
4787    });
4788    assert_eq!(
4789        definitions_1[0].target.buffer,
4790        definitions_2[0].target.buffer
4791    );
4792
4793    fake_language_server.handle_request::<lsp::request::GotoTypeDefinition, _, _>(
4794        |req, _| async move {
4795            assert_eq!(
4796                req.text_document_position_params.position,
4797                lsp::Position::new(0, 7)
4798            );
4799            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4800                lsp::Location::new(
4801                    lsp::Url::from_file_path("/root/dir-2/c.rs").unwrap(),
4802                    lsp::Range::new(lsp::Position::new(0, 5), lsp::Position::new(0, 7)),
4803                ),
4804            )))
4805        },
4806    );
4807
4808    let type_definitions = project_b
4809        .update(cx_b, |p, cx| p.type_definition(&buffer_b, 7, cx))
4810        .await
4811        .unwrap();
4812    cx_b.read(|cx| {
4813        assert_eq!(type_definitions.len(), 1);
4814        let target_buffer = type_definitions[0].target.buffer.read(cx);
4815        assert_eq!(target_buffer.text(), "type T2 = usize;");
4816        assert_eq!(
4817            type_definitions[0].target.range.to_point(target_buffer),
4818            Point::new(0, 5)..Point::new(0, 7)
4819        );
4820    });
4821}
4822
4823#[gpui::test(iterations = 10)]
4824async fn test_references(
4825    executor: BackgroundExecutor,
4826    cx_a: &mut TestAppContext,
4827    cx_b: &mut TestAppContext,
4828) {
4829    let mut server = TestServer::start(executor.clone()).await;
4830    let client_a = server.create_client(cx_a, "user_a").await;
4831    let client_b = server.create_client(cx_b, "user_b").await;
4832    server
4833        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4834        .await;
4835    let active_call_a = cx_a.read(ActiveCall::global);
4836
4837    client_a.language_registry().add(rust_lang());
4838    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4839        "Rust",
4840        FakeLspAdapter {
4841            name: "my-fake-lsp-adapter",
4842            capabilities: lsp::ServerCapabilities {
4843                references_provider: Some(lsp::OneOf::Left(true)),
4844                ..Default::default()
4845            },
4846            ..Default::default()
4847        },
4848    );
4849
4850    client_a
4851        .fs()
4852        .insert_tree(
4853            "/root",
4854            json!({
4855                "dir-1": {
4856                    "one.rs": "const ONE: usize = 1;",
4857                    "two.rs": "const TWO: usize = one::ONE + one::ONE;",
4858                },
4859                "dir-2": {
4860                    "three.rs": "const THREE: usize = two::TWO + one::ONE;",
4861                }
4862            }),
4863        )
4864        .await;
4865    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4866    let project_id = active_call_a
4867        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4868        .await
4869        .unwrap();
4870    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4871
4872    // Open the file on client B.
4873    let (buffer_b, _handle) = project_b
4874        .update(cx_b, |p, cx| {
4875            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
4876        })
4877        .await
4878        .unwrap();
4879
4880    // Request references to a symbol as the guest.
4881    let fake_language_server = fake_language_servers.next().await.unwrap();
4882    let (lsp_response_tx, rx) = mpsc::unbounded::<Result<Option<Vec<lsp::Location>>>>();
4883    fake_language_server.handle_request::<lsp::request::References, _, _>({
4884        let rx = Arc::new(Mutex::new(Some(rx)));
4885        move |params, _| {
4886            assert_eq!(
4887                params.text_document_position.text_document.uri.as_str(),
4888                "file:///root/dir-1/one.rs"
4889            );
4890            let rx = rx.clone();
4891            async move {
4892                let mut response_rx = rx.lock().take().unwrap();
4893                let result = response_rx.next().await.unwrap();
4894                *rx.lock() = Some(response_rx);
4895                result
4896            }
4897        }
4898    });
4899
4900    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4901
4902    // User is informed that a request is pending.
4903    executor.run_until_parked();
4904    project_b.read_with(cx_b, |project, cx| {
4905        let status = project.language_server_statuses(cx).next().unwrap().1;
4906        assert_eq!(status.name, "my-fake-lsp-adapter");
4907        assert_eq!(
4908            status.pending_work.values().next().unwrap().message,
4909            Some("Finding references...".into())
4910        );
4911    });
4912
4913    // Cause the language server to respond.
4914    lsp_response_tx
4915        .unbounded_send(Ok(Some(vec![
4916            lsp::Location {
4917                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4918                range: lsp::Range::new(lsp::Position::new(0, 24), lsp::Position::new(0, 27)),
4919            },
4920            lsp::Location {
4921                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4922                range: lsp::Range::new(lsp::Position::new(0, 35), lsp::Position::new(0, 38)),
4923            },
4924            lsp::Location {
4925                uri: lsp::Url::from_file_path("/root/dir-2/three.rs").unwrap(),
4926                range: lsp::Range::new(lsp::Position::new(0, 37), lsp::Position::new(0, 40)),
4927            },
4928        ])))
4929        .unwrap();
4930
4931    let references = references.await.unwrap();
4932    executor.run_until_parked();
4933    project_b.read_with(cx_b, |project, cx| {
4934        // User is informed that a request is no longer pending.
4935        let status = project.language_server_statuses(cx).next().unwrap().1;
4936        assert!(status.pending_work.is_empty());
4937
4938        assert_eq!(references.len(), 3);
4939        assert_eq!(project.worktrees(cx).count(), 2);
4940
4941        let two_buffer = references[0].buffer.read(cx);
4942        let three_buffer = references[2].buffer.read(cx);
4943        assert_eq!(
4944            two_buffer.file().unwrap().path().as_ref(),
4945            Path::new("two.rs")
4946        );
4947        assert_eq!(references[1].buffer, references[0].buffer);
4948        assert_eq!(
4949            three_buffer.file().unwrap().full_path(cx),
4950            Path::new("/root/dir-2/three.rs")
4951        );
4952
4953        assert_eq!(references[0].range.to_offset(two_buffer), 24..27);
4954        assert_eq!(references[1].range.to_offset(two_buffer), 35..38);
4955        assert_eq!(references[2].range.to_offset(three_buffer), 37..40);
4956    });
4957
4958    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4959
4960    // User is informed that a request is pending.
4961    executor.run_until_parked();
4962    project_b.read_with(cx_b, |project, cx| {
4963        let status = project.language_server_statuses(cx).next().unwrap().1;
4964        assert_eq!(status.name, "my-fake-lsp-adapter");
4965        assert_eq!(
4966            status.pending_work.values().next().unwrap().message,
4967            Some("Finding references...".into())
4968        );
4969    });
4970
4971    // Cause the LSP request to fail.
4972    lsp_response_tx
4973        .unbounded_send(Err(anyhow!("can't find references")))
4974        .unwrap();
4975    references.await.unwrap_err();
4976
4977    // User is informed that the request is no longer pending.
4978    executor.run_until_parked();
4979    project_b.read_with(cx_b, |project, cx| {
4980        let status = project.language_server_statuses(cx).next().unwrap().1;
4981        assert!(status.pending_work.is_empty());
4982    });
4983}
4984
4985#[gpui::test(iterations = 10)]
4986async fn test_project_search(
4987    executor: BackgroundExecutor,
4988    cx_a: &mut TestAppContext,
4989    cx_b: &mut TestAppContext,
4990) {
4991    let mut server = TestServer::start(executor.clone()).await;
4992    let client_a = server.create_client(cx_a, "user_a").await;
4993    let client_b = server.create_client(cx_b, "user_b").await;
4994    server
4995        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4996        .await;
4997    let active_call_a = cx_a.read(ActiveCall::global);
4998
4999    client_a
5000        .fs()
5001        .insert_tree(
5002            "/root",
5003            json!({
5004                "dir-1": {
5005                    "a": "hello world",
5006                    "b": "goodnight moon",
5007                    "c": "a world of goo",
5008                    "d": "world champion of clown world",
5009                },
5010                "dir-2": {
5011                    "e": "disney world is fun",
5012                }
5013            }),
5014        )
5015        .await;
5016    let (project_a, _) = client_a.build_local_project("/root/dir-1", cx_a).await;
5017    let (worktree_2, _) = project_a
5018        .update(cx_a, |p, cx| {
5019            p.find_or_create_worktree("/root/dir-2", true, cx)
5020        })
5021        .await
5022        .unwrap();
5023    worktree_2
5024        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
5025        .await;
5026    let project_id = active_call_a
5027        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5028        .await
5029        .unwrap();
5030
5031    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5032
5033    // Perform a search as the guest.
5034    let mut results = HashMap::default();
5035    let search_rx = project_b.update(cx_b, |project, cx| {
5036        project.search(
5037            SearchQuery::text(
5038                "world",
5039                false,
5040                false,
5041                false,
5042                Default::default(),
5043                Default::default(),
5044                None,
5045            )
5046            .unwrap(),
5047            cx,
5048        )
5049    });
5050    while let Ok(result) = search_rx.recv().await {
5051        match result {
5052            SearchResult::Buffer { buffer, ranges } => {
5053                results.entry(buffer).or_insert(ranges);
5054            }
5055            SearchResult::LimitReached => {
5056                panic!("Unexpectedly reached search limit in tests. If you do want to assert limit-reached, change this panic call.")
5057            }
5058        };
5059    }
5060
5061    let mut ranges_by_path = results
5062        .into_iter()
5063        .map(|(buffer, ranges)| {
5064            buffer.read_with(cx_b, |buffer, cx| {
5065                let path = buffer.file().unwrap().full_path(cx);
5066                let offset_ranges = ranges
5067                    .into_iter()
5068                    .map(|range| range.to_offset(buffer))
5069                    .collect::<Vec<_>>();
5070                (path, offset_ranges)
5071            })
5072        })
5073        .collect::<Vec<_>>();
5074    ranges_by_path.sort_by_key(|(path, _)| path.clone());
5075
5076    assert_eq!(
5077        ranges_by_path,
5078        &[
5079            (PathBuf::from("dir-1/a"), vec![6..11]),
5080            (PathBuf::from("dir-1/c"), vec![2..7]),
5081            (PathBuf::from("dir-1/d"), vec![0..5, 24..29]),
5082            (PathBuf::from("dir-2/e"), vec![7..12]),
5083        ]
5084    );
5085}
5086
5087#[gpui::test(iterations = 10)]
5088async fn test_document_highlights(
5089    executor: BackgroundExecutor,
5090    cx_a: &mut TestAppContext,
5091    cx_b: &mut TestAppContext,
5092) {
5093    let mut server = TestServer::start(executor.clone()).await;
5094    let client_a = server.create_client(cx_a, "user_a").await;
5095    let client_b = server.create_client(cx_b, "user_b").await;
5096    server
5097        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5098        .await;
5099    let active_call_a = cx_a.read(ActiveCall::global);
5100
5101    client_a
5102        .fs()
5103        .insert_tree(
5104            "/root-1",
5105            json!({
5106                "main.rs": "fn double(number: i32) -> i32 { number + number }",
5107            }),
5108        )
5109        .await;
5110
5111    let mut fake_language_servers = client_a
5112        .language_registry()
5113        .register_fake_lsp("Rust", Default::default());
5114    client_a.language_registry().add(rust_lang());
5115
5116    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5117    let project_id = active_call_a
5118        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5119        .await
5120        .unwrap();
5121    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5122
5123    // Open the file on client B.
5124    let (buffer_b, _handle) = project_b
5125        .update(cx_b, |p, cx| {
5126            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5127        })
5128        .await
5129        .unwrap();
5130
5131    // Request document highlights as the guest.
5132    let fake_language_server = fake_language_servers.next().await.unwrap();
5133    fake_language_server.handle_request::<lsp::request::DocumentHighlightRequest, _, _>(
5134        |params, _| async move {
5135            assert_eq!(
5136                params
5137                    .text_document_position_params
5138                    .text_document
5139                    .uri
5140                    .as_str(),
5141                "file:///root-1/main.rs"
5142            );
5143            assert_eq!(
5144                params.text_document_position_params.position,
5145                lsp::Position::new(0, 34)
5146            );
5147            Ok(Some(vec![
5148                lsp::DocumentHighlight {
5149                    kind: Some(lsp::DocumentHighlightKind::WRITE),
5150                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 16)),
5151                },
5152                lsp::DocumentHighlight {
5153                    kind: Some(lsp::DocumentHighlightKind::READ),
5154                    range: lsp::Range::new(lsp::Position::new(0, 32), lsp::Position::new(0, 38)),
5155                },
5156                lsp::DocumentHighlight {
5157                    kind: Some(lsp::DocumentHighlightKind::READ),
5158                    range: lsp::Range::new(lsp::Position::new(0, 41), lsp::Position::new(0, 47)),
5159                },
5160            ]))
5161        },
5162    );
5163
5164    let highlights = project_b
5165        .update(cx_b, |p, cx| p.document_highlights(&buffer_b, 34, cx))
5166        .await
5167        .unwrap();
5168
5169    buffer_b.read_with(cx_b, |buffer, _| {
5170        let snapshot = buffer.snapshot();
5171
5172        let highlights = highlights
5173            .into_iter()
5174            .map(|highlight| (highlight.kind, highlight.range.to_offset(&snapshot)))
5175            .collect::<Vec<_>>();
5176        assert_eq!(
5177            highlights,
5178            &[
5179                (lsp::DocumentHighlightKind::WRITE, 10..16),
5180                (lsp::DocumentHighlightKind::READ, 32..38),
5181                (lsp::DocumentHighlightKind::READ, 41..47)
5182            ]
5183        )
5184    });
5185}
5186
5187#[gpui::test(iterations = 10)]
5188async fn test_lsp_hover(
5189    executor: BackgroundExecutor,
5190    cx_a: &mut TestAppContext,
5191    cx_b: &mut TestAppContext,
5192) {
5193    let mut server = TestServer::start(executor.clone()).await;
5194    let client_a = server.create_client(cx_a, "user_a").await;
5195    let client_b = server.create_client(cx_b, "user_b").await;
5196    server
5197        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5198        .await;
5199    let active_call_a = cx_a.read(ActiveCall::global);
5200
5201    client_a
5202        .fs()
5203        .insert_tree(
5204            "/root-1",
5205            json!({
5206                "main.rs": "use std::collections::HashMap;",
5207            }),
5208        )
5209        .await;
5210
5211    client_a.language_registry().add(rust_lang());
5212    let language_server_names = ["rust-analyzer", "CrabLang-ls"];
5213    let mut language_servers = [
5214        client_a.language_registry().register_fake_lsp(
5215            "Rust",
5216            FakeLspAdapter {
5217                name: "rust-analyzer",
5218                capabilities: lsp::ServerCapabilities {
5219                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5220                    ..lsp::ServerCapabilities::default()
5221                },
5222                ..FakeLspAdapter::default()
5223            },
5224        ),
5225        client_a.language_registry().register_fake_lsp(
5226            "Rust",
5227            FakeLspAdapter {
5228                name: "CrabLang-ls",
5229                capabilities: lsp::ServerCapabilities {
5230                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5231                    ..lsp::ServerCapabilities::default()
5232                },
5233                ..FakeLspAdapter::default()
5234            },
5235        ),
5236    ];
5237
5238    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5239    let project_id = active_call_a
5240        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5241        .await
5242        .unwrap();
5243    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5244
5245    // Open the file as the guest
5246    let (buffer_b, _handle) = project_b
5247        .update(cx_b, |p, cx| {
5248            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5249        })
5250        .await
5251        .unwrap();
5252
5253    let mut servers_with_hover_requests = HashMap::default();
5254    for i in 0..language_server_names.len() {
5255        let new_server = language_servers[i].next().await.unwrap_or_else(|| {
5256            panic!(
5257                "Failed to get language server #{i} with name {}",
5258                &language_server_names[i]
5259            )
5260        });
5261        let new_server_name = new_server.server.name();
5262        assert!(
5263            !servers_with_hover_requests.contains_key(&new_server_name),
5264            "Unexpected: initialized server with the same name twice. Name: `{new_server_name}`"
5265        );
5266        match new_server_name.as_ref() {
5267            "CrabLang-ls" => {
5268                servers_with_hover_requests.insert(
5269                    new_server_name.clone(),
5270                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5271                        move |params, _| {
5272                            assert_eq!(
5273                                params
5274                                    .text_document_position_params
5275                                    .text_document
5276                                    .uri
5277                                    .as_str(),
5278                                "file:///root-1/main.rs"
5279                            );
5280                            let name = new_server_name.clone();
5281                            async move {
5282                                Ok(Some(lsp::Hover {
5283                                    contents: lsp::HoverContents::Scalar(
5284                                        lsp::MarkedString::String(format!("{name} hover")),
5285                                    ),
5286                                    range: None,
5287                                }))
5288                            }
5289                        },
5290                    ),
5291                );
5292            }
5293            "rust-analyzer" => {
5294                servers_with_hover_requests.insert(
5295                    new_server_name.clone(),
5296                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5297                        |params, _| async move {
5298                            assert_eq!(
5299                                params
5300                                    .text_document_position_params
5301                                    .text_document
5302                                    .uri
5303                                    .as_str(),
5304                                "file:///root-1/main.rs"
5305                            );
5306                            assert_eq!(
5307                                params.text_document_position_params.position,
5308                                lsp::Position::new(0, 22)
5309                            );
5310                            Ok(Some(lsp::Hover {
5311                                contents: lsp::HoverContents::Array(vec![
5312                                    lsp::MarkedString::String("Test hover content.".to_string()),
5313                                    lsp::MarkedString::LanguageString(lsp::LanguageString {
5314                                        language: "Rust".to_string(),
5315                                        value: "let foo = 42;".to_string(),
5316                                    }),
5317                                ]),
5318                                range: Some(lsp::Range::new(
5319                                    lsp::Position::new(0, 22),
5320                                    lsp::Position::new(0, 29),
5321                                )),
5322                            }))
5323                        },
5324                    ),
5325                );
5326            }
5327            unexpected => panic!("Unexpected server name: {unexpected}"),
5328        }
5329    }
5330
5331    // Request hover information as the guest.
5332    let mut hovers = project_b
5333        .update(cx_b, |p, cx| p.hover(&buffer_b, 22, cx))
5334        .await;
5335    assert_eq!(
5336        hovers.len(),
5337        2,
5338        "Expected two hovers from both language servers, but got: {hovers:?}"
5339    );
5340
5341    let _: Vec<()> = futures::future::join_all(servers_with_hover_requests.into_values().map(
5342        |mut hover_request| async move {
5343            hover_request
5344                .next()
5345                .await
5346                .expect("All hover requests should have been triggered")
5347        },
5348    ))
5349    .await;
5350
5351    hovers.sort_by_key(|hover| hover.contents.len());
5352    let first_hover = hovers.first().cloned().unwrap();
5353    assert_eq!(
5354        first_hover.contents,
5355        vec![project::HoverBlock {
5356            text: "CrabLang-ls hover".to_string(),
5357            kind: HoverBlockKind::Markdown,
5358        },]
5359    );
5360    let second_hover = hovers.last().cloned().unwrap();
5361    assert_eq!(
5362        second_hover.contents,
5363        vec![
5364            project::HoverBlock {
5365                text: "Test hover content.".to_string(),
5366                kind: HoverBlockKind::Markdown,
5367            },
5368            project::HoverBlock {
5369                text: "let foo = 42;".to_string(),
5370                kind: HoverBlockKind::Code {
5371                    language: "Rust".to_string()
5372                },
5373            }
5374        ]
5375    );
5376    buffer_b.read_with(cx_b, |buffer, _| {
5377        let snapshot = buffer.snapshot();
5378        assert_eq!(second_hover.range.unwrap().to_offset(&snapshot), 22..29);
5379    });
5380}
5381
5382#[gpui::test(iterations = 10)]
5383async fn test_project_symbols(
5384    executor: BackgroundExecutor,
5385    cx_a: &mut TestAppContext,
5386    cx_b: &mut TestAppContext,
5387) {
5388    let mut server = TestServer::start(executor.clone()).await;
5389    let client_a = server.create_client(cx_a, "user_a").await;
5390    let client_b = server.create_client(cx_b, "user_b").await;
5391    server
5392        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5393        .await;
5394    let active_call_a = cx_a.read(ActiveCall::global);
5395
5396    client_a.language_registry().add(rust_lang());
5397    let mut fake_language_servers = client_a
5398        .language_registry()
5399        .register_fake_lsp("Rust", Default::default());
5400
5401    client_a
5402        .fs()
5403        .insert_tree(
5404            "/code",
5405            json!({
5406                "crate-1": {
5407                    "one.rs": "const ONE: usize = 1;",
5408                },
5409                "crate-2": {
5410                    "two.rs": "const TWO: usize = 2; const THREE: usize = 3;",
5411                },
5412                "private": {
5413                    "passwords.txt": "the-password",
5414                }
5415            }),
5416        )
5417        .await;
5418    let (project_a, worktree_id) = client_a.build_local_project("/code/crate-1", cx_a).await;
5419    let project_id = active_call_a
5420        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5421        .await
5422        .unwrap();
5423    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5424
5425    // Cause the language server to start.
5426    let _buffer = project_b
5427        .update(cx_b, |p, cx| {
5428            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
5429        })
5430        .await
5431        .unwrap();
5432
5433    let fake_language_server = fake_language_servers.next().await.unwrap();
5434    fake_language_server.handle_request::<lsp::WorkspaceSymbolRequest, _, _>(|_, _| async move {
5435        Ok(Some(lsp::WorkspaceSymbolResponse::Flat(vec![
5436            #[allow(deprecated)]
5437            lsp::SymbolInformation {
5438                name: "TWO".into(),
5439                location: lsp::Location {
5440                    uri: lsp::Url::from_file_path("/code/crate-2/two.rs").unwrap(),
5441                    range: lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5442                },
5443                kind: lsp::SymbolKind::CONSTANT,
5444                tags: None,
5445                container_name: None,
5446                deprecated: None,
5447            },
5448        ])))
5449    });
5450
5451    // Request the definition of a symbol as the guest.
5452    let symbols = project_b
5453        .update(cx_b, |p, cx| p.symbols("two", cx))
5454        .await
5455        .unwrap();
5456    assert_eq!(symbols.len(), 1);
5457    assert_eq!(symbols[0].name, "TWO");
5458
5459    // Open one of the returned symbols.
5460    let buffer_b_2 = project_b
5461        .update(cx_b, |project, cx| {
5462            project.open_buffer_for_symbol(&symbols[0], cx)
5463        })
5464        .await
5465        .unwrap();
5466
5467    buffer_b_2.read_with(cx_b, |buffer, cx| {
5468        assert_eq!(
5469            buffer.file().unwrap().full_path(cx),
5470            Path::new("/code/crate-2/two.rs")
5471        );
5472    });
5473
5474    // Attempt to craft a symbol and violate host's privacy by opening an arbitrary file.
5475    let mut fake_symbol = symbols[0].clone();
5476    fake_symbol.path.path = Path::new("/code/secrets").into();
5477    let error = project_b
5478        .update(cx_b, |project, cx| {
5479            project.open_buffer_for_symbol(&fake_symbol, cx)
5480        })
5481        .await
5482        .unwrap_err();
5483    assert!(error.to_string().contains("invalid symbol signature"));
5484}
5485
5486#[gpui::test(iterations = 10)]
5487async fn test_open_buffer_while_getting_definition_pointing_to_it(
5488    executor: BackgroundExecutor,
5489    cx_a: &mut TestAppContext,
5490    cx_b: &mut TestAppContext,
5491    mut rng: StdRng,
5492) {
5493    let mut server = TestServer::start(executor.clone()).await;
5494    let client_a = server.create_client(cx_a, "user_a").await;
5495    let client_b = server.create_client(cx_b, "user_b").await;
5496    server
5497        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5498        .await;
5499    let active_call_a = cx_a.read(ActiveCall::global);
5500
5501    client_a.language_registry().add(rust_lang());
5502    let mut fake_language_servers = client_a
5503        .language_registry()
5504        .register_fake_lsp("Rust", Default::default());
5505
5506    client_a
5507        .fs()
5508        .insert_tree(
5509            "/root",
5510            json!({
5511                "a.rs": "const ONE: usize = b::TWO;",
5512                "b.rs": "const TWO: usize = 2",
5513            }),
5514        )
5515        .await;
5516    let (project_a, worktree_id) = client_a.build_local_project("/root", cx_a).await;
5517    let project_id = active_call_a
5518        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5519        .await
5520        .unwrap();
5521    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5522
5523    let (buffer_b1, _lsp) = project_b
5524        .update(cx_b, |p, cx| {
5525            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
5526        })
5527        .await
5528        .unwrap();
5529
5530    let fake_language_server = fake_language_servers.next().await.unwrap();
5531    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
5532        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
5533            lsp::Location::new(
5534                lsp::Url::from_file_path("/root/b.rs").unwrap(),
5535                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5536            ),
5537        )))
5538    });
5539
5540    let definitions;
5541    let buffer_b2;
5542    if rng.gen() {
5543        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5544        (buffer_b2, _) = project_b
5545            .update(cx_b, |p, cx| {
5546                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5547            })
5548            .await
5549            .unwrap();
5550    } else {
5551        (buffer_b2, _) = project_b
5552            .update(cx_b, |p, cx| {
5553                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5554            })
5555            .await
5556            .unwrap();
5557        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5558    }
5559
5560    let definitions = definitions.await.unwrap();
5561    assert_eq!(definitions.len(), 1);
5562    assert_eq!(definitions[0].target.buffer, buffer_b2);
5563}
5564
5565#[gpui::test(iterations = 10)]
5566async fn test_contacts(
5567    executor: BackgroundExecutor,
5568    cx_a: &mut TestAppContext,
5569    cx_b: &mut TestAppContext,
5570    cx_c: &mut TestAppContext,
5571    cx_d: &mut TestAppContext,
5572) {
5573    let mut server = TestServer::start(executor.clone()).await;
5574    let client_a = server.create_client(cx_a, "user_a").await;
5575    let client_b = server.create_client(cx_b, "user_b").await;
5576    let client_c = server.create_client(cx_c, "user_c").await;
5577    let client_d = server.create_client(cx_d, "user_d").await;
5578    server
5579        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
5580        .await;
5581    let active_call_a = cx_a.read(ActiveCall::global);
5582    let active_call_b = cx_b.read(ActiveCall::global);
5583    let active_call_c = cx_c.read(ActiveCall::global);
5584    let _active_call_d = cx_d.read(ActiveCall::global);
5585
5586    executor.run_until_parked();
5587    assert_eq!(
5588        contacts(&client_a, cx_a),
5589        [
5590            ("user_b".to_string(), "online", "free"),
5591            ("user_c".to_string(), "online", "free")
5592        ]
5593    );
5594    assert_eq!(
5595        contacts(&client_b, cx_b),
5596        [
5597            ("user_a".to_string(), "online", "free"),
5598            ("user_c".to_string(), "online", "free")
5599        ]
5600    );
5601    assert_eq!(
5602        contacts(&client_c, cx_c),
5603        [
5604            ("user_a".to_string(), "online", "free"),
5605            ("user_b".to_string(), "online", "free")
5606        ]
5607    );
5608    assert_eq!(contacts(&client_d, cx_d), []);
5609
5610    server.disconnect_client(client_c.peer_id().unwrap());
5611    server.forbid_connections();
5612    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5613    assert_eq!(
5614        contacts(&client_a, cx_a),
5615        [
5616            ("user_b".to_string(), "online", "free"),
5617            ("user_c".to_string(), "offline", "free")
5618        ]
5619    );
5620    assert_eq!(
5621        contacts(&client_b, cx_b),
5622        [
5623            ("user_a".to_string(), "online", "free"),
5624            ("user_c".to_string(), "offline", "free")
5625        ]
5626    );
5627    assert_eq!(contacts(&client_c, cx_c), []);
5628    assert_eq!(contacts(&client_d, cx_d), []);
5629
5630    server.allow_connections();
5631    client_c
5632        .authenticate_and_connect(false, &cx_c.to_async())
5633        .await
5634        .unwrap();
5635
5636    executor.run_until_parked();
5637    assert_eq!(
5638        contacts(&client_a, cx_a),
5639        [
5640            ("user_b".to_string(), "online", "free"),
5641            ("user_c".to_string(), "online", "free")
5642        ]
5643    );
5644    assert_eq!(
5645        contacts(&client_b, cx_b),
5646        [
5647            ("user_a".to_string(), "online", "free"),
5648            ("user_c".to_string(), "online", "free")
5649        ]
5650    );
5651    assert_eq!(
5652        contacts(&client_c, cx_c),
5653        [
5654            ("user_a".to_string(), "online", "free"),
5655            ("user_b".to_string(), "online", "free")
5656        ]
5657    );
5658    assert_eq!(contacts(&client_d, cx_d), []);
5659
5660    active_call_a
5661        .update(cx_a, |call, cx| {
5662            call.invite(client_b.user_id().unwrap(), None, cx)
5663        })
5664        .await
5665        .unwrap();
5666    executor.run_until_parked();
5667    assert_eq!(
5668        contacts(&client_a, cx_a),
5669        [
5670            ("user_b".to_string(), "online", "busy"),
5671            ("user_c".to_string(), "online", "free")
5672        ]
5673    );
5674    assert_eq!(
5675        contacts(&client_b, cx_b),
5676        [
5677            ("user_a".to_string(), "online", "busy"),
5678            ("user_c".to_string(), "online", "free")
5679        ]
5680    );
5681    assert_eq!(
5682        contacts(&client_c, cx_c),
5683        [
5684            ("user_a".to_string(), "online", "busy"),
5685            ("user_b".to_string(), "online", "busy")
5686        ]
5687    );
5688    assert_eq!(contacts(&client_d, cx_d), []);
5689
5690    // Client B and client D become contacts while client B is being called.
5691    server
5692        .make_contacts(&mut [(&client_b, cx_b), (&client_d, cx_d)])
5693        .await;
5694    executor.run_until_parked();
5695    assert_eq!(
5696        contacts(&client_a, cx_a),
5697        [
5698            ("user_b".to_string(), "online", "busy"),
5699            ("user_c".to_string(), "online", "free")
5700        ]
5701    );
5702    assert_eq!(
5703        contacts(&client_b, cx_b),
5704        [
5705            ("user_a".to_string(), "online", "busy"),
5706            ("user_c".to_string(), "online", "free"),
5707            ("user_d".to_string(), "online", "free"),
5708        ]
5709    );
5710    assert_eq!(
5711        contacts(&client_c, cx_c),
5712        [
5713            ("user_a".to_string(), "online", "busy"),
5714            ("user_b".to_string(), "online", "busy")
5715        ]
5716    );
5717    assert_eq!(
5718        contacts(&client_d, cx_d),
5719        [("user_b".to_string(), "online", "busy")]
5720    );
5721
5722    active_call_b.update(cx_b, |call, cx| call.decline_incoming(cx).unwrap());
5723    executor.run_until_parked();
5724    assert_eq!(
5725        contacts(&client_a, cx_a),
5726        [
5727            ("user_b".to_string(), "online", "free"),
5728            ("user_c".to_string(), "online", "free")
5729        ]
5730    );
5731    assert_eq!(
5732        contacts(&client_b, cx_b),
5733        [
5734            ("user_a".to_string(), "online", "free"),
5735            ("user_c".to_string(), "online", "free"),
5736            ("user_d".to_string(), "online", "free")
5737        ]
5738    );
5739    assert_eq!(
5740        contacts(&client_c, cx_c),
5741        [
5742            ("user_a".to_string(), "online", "free"),
5743            ("user_b".to_string(), "online", "free")
5744        ]
5745    );
5746    assert_eq!(
5747        contacts(&client_d, cx_d),
5748        [("user_b".to_string(), "online", "free")]
5749    );
5750
5751    active_call_c
5752        .update(cx_c, |call, cx| {
5753            call.invite(client_a.user_id().unwrap(), None, cx)
5754        })
5755        .await
5756        .unwrap();
5757    executor.run_until_parked();
5758    assert_eq!(
5759        contacts(&client_a, cx_a),
5760        [
5761            ("user_b".to_string(), "online", "free"),
5762            ("user_c".to_string(), "online", "busy")
5763        ]
5764    );
5765    assert_eq!(
5766        contacts(&client_b, cx_b),
5767        [
5768            ("user_a".to_string(), "online", "busy"),
5769            ("user_c".to_string(), "online", "busy"),
5770            ("user_d".to_string(), "online", "free")
5771        ]
5772    );
5773    assert_eq!(
5774        contacts(&client_c, cx_c),
5775        [
5776            ("user_a".to_string(), "online", "busy"),
5777            ("user_b".to_string(), "online", "free")
5778        ]
5779    );
5780    assert_eq!(
5781        contacts(&client_d, cx_d),
5782        [("user_b".to_string(), "online", "free")]
5783    );
5784
5785    active_call_a
5786        .update(cx_a, |call, cx| call.accept_incoming(cx))
5787        .await
5788        .unwrap();
5789    executor.run_until_parked();
5790    assert_eq!(
5791        contacts(&client_a, cx_a),
5792        [
5793            ("user_b".to_string(), "online", "free"),
5794            ("user_c".to_string(), "online", "busy")
5795        ]
5796    );
5797    assert_eq!(
5798        contacts(&client_b, cx_b),
5799        [
5800            ("user_a".to_string(), "online", "busy"),
5801            ("user_c".to_string(), "online", "busy"),
5802            ("user_d".to_string(), "online", "free")
5803        ]
5804    );
5805    assert_eq!(
5806        contacts(&client_c, cx_c),
5807        [
5808            ("user_a".to_string(), "online", "busy"),
5809            ("user_b".to_string(), "online", "free")
5810        ]
5811    );
5812    assert_eq!(
5813        contacts(&client_d, cx_d),
5814        [("user_b".to_string(), "online", "free")]
5815    );
5816
5817    active_call_a
5818        .update(cx_a, |call, cx| {
5819            call.invite(client_b.user_id().unwrap(), None, cx)
5820        })
5821        .await
5822        .unwrap();
5823    executor.run_until_parked();
5824    assert_eq!(
5825        contacts(&client_a, cx_a),
5826        [
5827            ("user_b".to_string(), "online", "busy"),
5828            ("user_c".to_string(), "online", "busy")
5829        ]
5830    );
5831    assert_eq!(
5832        contacts(&client_b, cx_b),
5833        [
5834            ("user_a".to_string(), "online", "busy"),
5835            ("user_c".to_string(), "online", "busy"),
5836            ("user_d".to_string(), "online", "free")
5837        ]
5838    );
5839    assert_eq!(
5840        contacts(&client_c, cx_c),
5841        [
5842            ("user_a".to_string(), "online", "busy"),
5843            ("user_b".to_string(), "online", "busy")
5844        ]
5845    );
5846    assert_eq!(
5847        contacts(&client_d, cx_d),
5848        [("user_b".to_string(), "online", "busy")]
5849    );
5850
5851    active_call_a
5852        .update(cx_a, |call, cx| call.hang_up(cx))
5853        .await
5854        .unwrap();
5855    executor.run_until_parked();
5856    assert_eq!(
5857        contacts(&client_a, cx_a),
5858        [
5859            ("user_b".to_string(), "online", "free"),
5860            ("user_c".to_string(), "online", "free")
5861        ]
5862    );
5863    assert_eq!(
5864        contacts(&client_b, cx_b),
5865        [
5866            ("user_a".to_string(), "online", "free"),
5867            ("user_c".to_string(), "online", "free"),
5868            ("user_d".to_string(), "online", "free")
5869        ]
5870    );
5871    assert_eq!(
5872        contacts(&client_c, cx_c),
5873        [
5874            ("user_a".to_string(), "online", "free"),
5875            ("user_b".to_string(), "online", "free")
5876        ]
5877    );
5878    assert_eq!(
5879        contacts(&client_d, cx_d),
5880        [("user_b".to_string(), "online", "free")]
5881    );
5882
5883    active_call_a
5884        .update(cx_a, |call, cx| {
5885            call.invite(client_b.user_id().unwrap(), None, cx)
5886        })
5887        .await
5888        .unwrap();
5889    executor.run_until_parked();
5890    assert_eq!(
5891        contacts(&client_a, cx_a),
5892        [
5893            ("user_b".to_string(), "online", "busy"),
5894            ("user_c".to_string(), "online", "free")
5895        ]
5896    );
5897    assert_eq!(
5898        contacts(&client_b, cx_b),
5899        [
5900            ("user_a".to_string(), "online", "busy"),
5901            ("user_c".to_string(), "online", "free"),
5902            ("user_d".to_string(), "online", "free")
5903        ]
5904    );
5905    assert_eq!(
5906        contacts(&client_c, cx_c),
5907        [
5908            ("user_a".to_string(), "online", "busy"),
5909            ("user_b".to_string(), "online", "busy")
5910        ]
5911    );
5912    assert_eq!(
5913        contacts(&client_d, cx_d),
5914        [("user_b".to_string(), "online", "busy")]
5915    );
5916
5917    server.forbid_connections();
5918    server.disconnect_client(client_a.peer_id().unwrap());
5919    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5920    assert_eq!(contacts(&client_a, cx_a), []);
5921    assert_eq!(
5922        contacts(&client_b, cx_b),
5923        [
5924            ("user_a".to_string(), "offline", "free"),
5925            ("user_c".to_string(), "online", "free"),
5926            ("user_d".to_string(), "online", "free")
5927        ]
5928    );
5929    assert_eq!(
5930        contacts(&client_c, cx_c),
5931        [
5932            ("user_a".to_string(), "offline", "free"),
5933            ("user_b".to_string(), "online", "free")
5934        ]
5935    );
5936    assert_eq!(
5937        contacts(&client_d, cx_d),
5938        [("user_b".to_string(), "online", "free")]
5939    );
5940
5941    // Test removing a contact
5942    client_b
5943        .user_store()
5944        .update(cx_b, |store, cx| {
5945            store.remove_contact(client_c.user_id().unwrap(), cx)
5946        })
5947        .await
5948        .unwrap();
5949    executor.run_until_parked();
5950    assert_eq!(
5951        contacts(&client_b, cx_b),
5952        [
5953            ("user_a".to_string(), "offline", "free"),
5954            ("user_d".to_string(), "online", "free")
5955        ]
5956    );
5957    assert_eq!(
5958        contacts(&client_c, cx_c),
5959        [("user_a".to_string(), "offline", "free"),]
5960    );
5961
5962    fn contacts(
5963        client: &TestClient,
5964        cx: &TestAppContext,
5965    ) -> Vec<(String, &'static str, &'static str)> {
5966        client.user_store().read_with(cx, |store, _| {
5967            store
5968                .contacts()
5969                .iter()
5970                .map(|contact| {
5971                    (
5972                        contact.user.github_login.clone(),
5973                        if contact.online { "online" } else { "offline" },
5974                        if contact.busy { "busy" } else { "free" },
5975                    )
5976                })
5977                .collect()
5978        })
5979    }
5980}
5981
5982#[gpui::test(iterations = 10)]
5983async fn test_contact_requests(
5984    executor: BackgroundExecutor,
5985    cx_a: &mut TestAppContext,
5986    cx_a2: &mut TestAppContext,
5987    cx_b: &mut TestAppContext,
5988    cx_b2: &mut TestAppContext,
5989    cx_c: &mut TestAppContext,
5990    cx_c2: &mut TestAppContext,
5991) {
5992    // Connect to a server as 3 clients.
5993    let mut server = TestServer::start(executor.clone()).await;
5994    let client_a = server.create_client(cx_a, "user_a").await;
5995    let client_a2 = server.create_client(cx_a2, "user_a").await;
5996    let client_b = server.create_client(cx_b, "user_b").await;
5997    let client_b2 = server.create_client(cx_b2, "user_b").await;
5998    let client_c = server.create_client(cx_c, "user_c").await;
5999    let client_c2 = server.create_client(cx_c2, "user_c").await;
6000
6001    assert_eq!(client_a.user_id().unwrap(), client_a2.user_id().unwrap());
6002    assert_eq!(client_b.user_id().unwrap(), client_b2.user_id().unwrap());
6003    assert_eq!(client_c.user_id().unwrap(), client_c2.user_id().unwrap());
6004
6005    // User A and User C request that user B become their contact.
6006    client_a
6007        .user_store()
6008        .update(cx_a, |store, cx| {
6009            store.request_contact(client_b.user_id().unwrap(), cx)
6010        })
6011        .await
6012        .unwrap();
6013    client_c
6014        .user_store()
6015        .update(cx_c, |store, cx| {
6016            store.request_contact(client_b.user_id().unwrap(), cx)
6017        })
6018        .await
6019        .unwrap();
6020    executor.run_until_parked();
6021
6022    // All users see the pending request appear in all their clients.
6023    assert_eq!(
6024        client_a.summarize_contacts(cx_a).outgoing_requests,
6025        &["user_b"]
6026    );
6027    assert_eq!(
6028        client_a2.summarize_contacts(cx_a2).outgoing_requests,
6029        &["user_b"]
6030    );
6031    assert_eq!(
6032        client_b.summarize_contacts(cx_b).incoming_requests,
6033        &["user_a", "user_c"]
6034    );
6035    assert_eq!(
6036        client_b2.summarize_contacts(cx_b2).incoming_requests,
6037        &["user_a", "user_c"]
6038    );
6039    assert_eq!(
6040        client_c.summarize_contacts(cx_c).outgoing_requests,
6041        &["user_b"]
6042    );
6043    assert_eq!(
6044        client_c2.summarize_contacts(cx_c2).outgoing_requests,
6045        &["user_b"]
6046    );
6047
6048    // Contact requests are present upon connecting (tested here via disconnect/reconnect)
6049    disconnect_and_reconnect(&client_a, cx_a).await;
6050    disconnect_and_reconnect(&client_b, cx_b).await;
6051    disconnect_and_reconnect(&client_c, cx_c).await;
6052    executor.run_until_parked();
6053    assert_eq!(
6054        client_a.summarize_contacts(cx_a).outgoing_requests,
6055        &["user_b"]
6056    );
6057    assert_eq!(
6058        client_b.summarize_contacts(cx_b).incoming_requests,
6059        &["user_a", "user_c"]
6060    );
6061    assert_eq!(
6062        client_c.summarize_contacts(cx_c).outgoing_requests,
6063        &["user_b"]
6064    );
6065
6066    // User B accepts the request from user A.
6067    client_b
6068        .user_store()
6069        .update(cx_b, |store, cx| {
6070            store.respond_to_contact_request(client_a.user_id().unwrap(), true, cx)
6071        })
6072        .await
6073        .unwrap();
6074
6075    executor.run_until_parked();
6076
6077    // User B sees user A as their contact now in all client, and the incoming request from them is removed.
6078    let contacts_b = client_b.summarize_contacts(cx_b);
6079    assert_eq!(contacts_b.current, &["user_a"]);
6080    assert_eq!(contacts_b.incoming_requests, &["user_c"]);
6081    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6082    assert_eq!(contacts_b2.current, &["user_a"]);
6083    assert_eq!(contacts_b2.incoming_requests, &["user_c"]);
6084
6085    // User A sees user B as their contact now in all clients, and the outgoing request to them is removed.
6086    let contacts_a = client_a.summarize_contacts(cx_a);
6087    assert_eq!(contacts_a.current, &["user_b"]);
6088    assert!(contacts_a.outgoing_requests.is_empty());
6089    let contacts_a2 = client_a2.summarize_contacts(cx_a2);
6090    assert_eq!(contacts_a2.current, &["user_b"]);
6091    assert!(contacts_a2.outgoing_requests.is_empty());
6092
6093    // Contacts are present upon connecting (tested here via disconnect/reconnect)
6094    disconnect_and_reconnect(&client_a, cx_a).await;
6095    disconnect_and_reconnect(&client_b, cx_b).await;
6096    disconnect_and_reconnect(&client_c, cx_c).await;
6097    executor.run_until_parked();
6098    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6099    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6100    assert_eq!(
6101        client_b.summarize_contacts(cx_b).incoming_requests,
6102        &["user_c"]
6103    );
6104    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6105    assert_eq!(
6106        client_c.summarize_contacts(cx_c).outgoing_requests,
6107        &["user_b"]
6108    );
6109
6110    // User B rejects the request from user C.
6111    client_b
6112        .user_store()
6113        .update(cx_b, |store, cx| {
6114            store.respond_to_contact_request(client_c.user_id().unwrap(), false, cx)
6115        })
6116        .await
6117        .unwrap();
6118
6119    executor.run_until_parked();
6120
6121    // User B doesn't see user C as their contact, and the incoming request from them is removed.
6122    let contacts_b = client_b.summarize_contacts(cx_b);
6123    assert_eq!(contacts_b.current, &["user_a"]);
6124    assert!(contacts_b.incoming_requests.is_empty());
6125    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6126    assert_eq!(contacts_b2.current, &["user_a"]);
6127    assert!(contacts_b2.incoming_requests.is_empty());
6128
6129    // User C doesn't see user B as their contact, and the outgoing request to them is removed.
6130    let contacts_c = client_c.summarize_contacts(cx_c);
6131    assert!(contacts_c.current.is_empty());
6132    assert!(contacts_c.outgoing_requests.is_empty());
6133    let contacts_c2 = client_c2.summarize_contacts(cx_c2);
6134    assert!(contacts_c2.current.is_empty());
6135    assert!(contacts_c2.outgoing_requests.is_empty());
6136
6137    // Incoming/outgoing requests are not present upon connecting (tested here via disconnect/reconnect)
6138    disconnect_and_reconnect(&client_a, cx_a).await;
6139    disconnect_and_reconnect(&client_b, cx_b).await;
6140    disconnect_and_reconnect(&client_c, cx_c).await;
6141    executor.run_until_parked();
6142    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6143    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6144    assert!(client_b
6145        .summarize_contacts(cx_b)
6146        .incoming_requests
6147        .is_empty());
6148    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6149    assert!(client_c
6150        .summarize_contacts(cx_c)
6151        .outgoing_requests
6152        .is_empty());
6153
6154    async fn disconnect_and_reconnect(client: &TestClient, cx: &mut TestAppContext) {
6155        client.disconnect(&cx.to_async());
6156        client.clear_contacts(cx).await;
6157        client
6158            .authenticate_and_connect(false, &cx.to_async())
6159            .await
6160            .unwrap();
6161    }
6162}
6163
6164// TODO: Re-enable this test once we can replace our swift Livekit SDK with the rust SDK
6165#[cfg(not(target_os = "macos"))]
6166#[gpui::test(iterations = 10)]
6167async fn test_join_call_after_screen_was_shared(
6168    executor: BackgroundExecutor,
6169    cx_a: &mut TestAppContext,
6170    cx_b: &mut TestAppContext,
6171) {
6172    let mut server = TestServer::start(executor.clone()).await;
6173
6174    let client_a = server.create_client(cx_a, "user_a").await;
6175    let client_b = server.create_client(cx_b, "user_b").await;
6176    server
6177        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6178        .await;
6179
6180    let active_call_a = cx_a.read(ActiveCall::global);
6181    let active_call_b = cx_b.read(ActiveCall::global);
6182
6183    // Call users B and C from client A.
6184    active_call_a
6185        .update(cx_a, |call, cx| {
6186            call.invite(client_b.user_id().unwrap(), None, cx)
6187        })
6188        .await
6189        .unwrap();
6190
6191    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
6192    executor.run_until_parked();
6193    assert_eq!(
6194        room_participants(&room_a, cx_a),
6195        RoomParticipants {
6196            remote: Default::default(),
6197            pending: vec!["user_b".to_string()]
6198        }
6199    );
6200
6201    // User B receives the call.
6202
6203    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
6204    let call_b = incoming_call_b.next().await.unwrap().unwrap();
6205    assert_eq!(call_b.calling_user.github_login, "user_a");
6206
6207    // User A shares their screen
6208    let display = gpui::TestScreenCaptureSource::new();
6209    cx_a.set_screen_capture_sources(vec![display]);
6210    active_call_a
6211        .update(cx_a, |call, cx| {
6212            call.room()
6213                .unwrap()
6214                .update(cx, |room, cx| room.share_screen(cx))
6215        })
6216        .await
6217        .unwrap();
6218
6219    client_b.user_store().update(cx_b, |user_store, _| {
6220        user_store.clear_cache();
6221    });
6222
6223    // User B joins the room
6224    active_call_b
6225        .update(cx_b, |call, cx| call.accept_incoming(cx))
6226        .await
6227        .unwrap();
6228
6229    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
6230    assert!(incoming_call_b.next().await.unwrap().is_none());
6231
6232    executor.run_until_parked();
6233    assert_eq!(
6234        room_participants(&room_a, cx_a),
6235        RoomParticipants {
6236            remote: vec!["user_b".to_string()],
6237            pending: vec![],
6238        }
6239    );
6240    assert_eq!(
6241        room_participants(&room_b, cx_b),
6242        RoomParticipants {
6243            remote: vec!["user_a".to_string()],
6244            pending: vec![],
6245        }
6246    );
6247
6248    // Ensure User B sees User A's screenshare.
6249
6250    room_b.read_with(cx_b, |room, _| {
6251        assert_eq!(
6252            room.remote_participants()
6253                .get(&client_a.user_id().unwrap())
6254                .unwrap()
6255                .video_tracks
6256                .len(),
6257            1
6258        );
6259    });
6260}
6261
6262#[gpui::test]
6263async fn test_right_click_menu_behind_collab_panel(cx: &mut TestAppContext) {
6264    let mut server = TestServer::start(cx.executor().clone()).await;
6265    let client_a = server.create_client(cx, "user_a").await;
6266    let (_workspace_a, cx) = client_a.build_test_workspace(cx).await;
6267
6268    cx.simulate_resize(size(px(300.), px(300.)));
6269
6270    cx.simulate_keystrokes("cmd-n cmd-n cmd-n");
6271    cx.update(|window, _cx| window.refresh());
6272
6273    let tab_bounds = cx.debug_bounds("TAB-2").unwrap();
6274    let new_tab_button_bounds = cx.debug_bounds("ICON-Plus").unwrap();
6275
6276    assert!(
6277        tab_bounds.intersects(&new_tab_button_bounds),
6278        "Tab should overlap with the new tab button, if this is failing check if there's been a redesign!"
6279    );
6280
6281    cx.simulate_event(MouseDownEvent {
6282        button: MouseButton::Right,
6283        position: new_tab_button_bounds.center(),
6284        modifiers: Modifiers::default(),
6285        click_count: 1,
6286        first_mouse: false,
6287    });
6288
6289    // regression test that the right click menu for tabs does not open.
6290    assert!(cx.debug_bounds("MENU_ITEM-Close").is_none());
6291
6292    let tab_bounds = cx.debug_bounds("TAB-1").unwrap();
6293    cx.simulate_event(MouseDownEvent {
6294        button: MouseButton::Right,
6295        position: tab_bounds.center(),
6296        modifiers: Modifiers::default(),
6297        click_count: 1,
6298        first_mouse: false,
6299    });
6300    assert!(cx.debug_bounds("MENU_ITEM-Close").is_some());
6301}
6302
6303#[gpui::test]
6304async fn test_pane_split_left(cx: &mut TestAppContext) {
6305    let (_, client) = TestServer::start1(cx).await;
6306    let (workspace, cx) = client.build_test_workspace(cx).await;
6307
6308    cx.simulate_keystrokes("cmd-n");
6309    workspace.update(cx, |workspace, cx| {
6310        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 1);
6311    });
6312    cx.simulate_keystrokes("cmd-k left");
6313    workspace.update(cx, |workspace, cx| {
6314        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6315    });
6316    cx.simulate_keystrokes("cmd-k");
6317    // sleep for longer than the timeout in keyboard shortcut handling
6318    // to verify that it doesn't fire in this case.
6319    cx.executor().advance_clock(Duration::from_secs(2));
6320    cx.simulate_keystrokes("left");
6321    workspace.update(cx, |workspace, cx| {
6322        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6323    });
6324}
6325
6326#[gpui::test]
6327async fn test_join_after_restart(cx1: &mut TestAppContext, cx2: &mut TestAppContext) {
6328    let (mut server, client) = TestServer::start1(cx1).await;
6329    let channel1 = server.make_public_channel("channel1", &client, cx1).await;
6330    let channel2 = server.make_public_channel("channel2", &client, cx1).await;
6331
6332    join_channel(channel1, &client, cx1).await.unwrap();
6333    drop(client);
6334
6335    let client2 = server.create_client(cx2, "user_a").await;
6336    join_channel(channel2, &client2, cx2).await.unwrap();
6337}
6338
6339#[gpui::test]
6340async fn test_preview_tabs(cx: &mut TestAppContext) {
6341    let (_server, client) = TestServer::start1(cx).await;
6342    let (workspace, cx) = client.build_test_workspace(cx).await;
6343    let project = workspace.update(cx, |workspace, _| workspace.project().clone());
6344
6345    let worktree_id = project.update(cx, |project, cx| {
6346        project.worktrees(cx).next().unwrap().read(cx).id()
6347    });
6348
6349    let path_1 = ProjectPath {
6350        worktree_id,
6351        path: Path::new("1.txt").into(),
6352    };
6353    let path_2 = ProjectPath {
6354        worktree_id,
6355        path: Path::new("2.js").into(),
6356    };
6357    let path_3 = ProjectPath {
6358        worktree_id,
6359        path: Path::new("3.rs").into(),
6360    };
6361
6362    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6363
6364    let get_path = |pane: &Pane, idx: usize, cx: &App| {
6365        pane.item_for_index(idx).unwrap().project_path(cx).unwrap()
6366    };
6367
6368    // Opening item 3 as a "permanent" tab
6369    workspace
6370        .update_in(cx, |workspace, window, cx| {
6371            workspace.open_path(path_3.clone(), None, false, window, cx)
6372        })
6373        .await
6374        .unwrap();
6375
6376    pane.update(cx, |pane, cx| {
6377        assert_eq!(pane.items_len(), 1);
6378        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6379        assert_eq!(pane.preview_item_id(), None);
6380
6381        assert!(!pane.can_navigate_backward());
6382        assert!(!pane.can_navigate_forward());
6383    });
6384
6385    // Open item 1 as preview
6386    workspace
6387        .update_in(cx, |workspace, window, cx| {
6388            workspace.open_path_preview(path_1.clone(), None, true, true, true, window, cx)
6389        })
6390        .await
6391        .unwrap();
6392
6393    pane.update(cx, |pane, cx| {
6394        assert_eq!(pane.items_len(), 2);
6395        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6396        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6397        assert_eq!(
6398            pane.preview_item_id(),
6399            Some(pane.items().nth(1).unwrap().item_id())
6400        );
6401
6402        assert!(pane.can_navigate_backward());
6403        assert!(!pane.can_navigate_forward());
6404    });
6405
6406    // Open item 2 as preview
6407    workspace
6408        .update_in(cx, |workspace, window, cx| {
6409            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6410        })
6411        .await
6412        .unwrap();
6413
6414    pane.update(cx, |pane, cx| {
6415        assert_eq!(pane.items_len(), 2);
6416        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6417        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6418        assert_eq!(
6419            pane.preview_item_id(),
6420            Some(pane.items().nth(1).unwrap().item_id())
6421        );
6422
6423        assert!(pane.can_navigate_backward());
6424        assert!(!pane.can_navigate_forward());
6425    });
6426
6427    // Going back should show item 1 as preview
6428    workspace
6429        .update_in(cx, |workspace, window, cx| {
6430            workspace.go_back(pane.downgrade(), window, cx)
6431        })
6432        .await
6433        .unwrap();
6434
6435    pane.update(cx, |pane, cx| {
6436        assert_eq!(pane.items_len(), 2);
6437        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6438        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6439        assert_eq!(
6440            pane.preview_item_id(),
6441            Some(pane.items().nth(1).unwrap().item_id())
6442        );
6443
6444        assert!(pane.can_navigate_backward());
6445        assert!(pane.can_navigate_forward());
6446    });
6447
6448    // Closing item 1
6449    pane.update_in(cx, |pane, window, cx| {
6450        pane.close_item_by_id(
6451            pane.active_item().unwrap().item_id(),
6452            workspace::SaveIntent::Skip,
6453            window,
6454            cx,
6455        )
6456    })
6457    .await
6458    .unwrap();
6459
6460    pane.update(cx, |pane, cx| {
6461        assert_eq!(pane.items_len(), 1);
6462        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6463        assert_eq!(pane.preview_item_id(), None);
6464
6465        assert!(pane.can_navigate_backward());
6466        assert!(!pane.can_navigate_forward());
6467    });
6468
6469    // Going back should show item 1 as preview
6470    workspace
6471        .update_in(cx, |workspace, window, cx| {
6472            workspace.go_back(pane.downgrade(), window, cx)
6473        })
6474        .await
6475        .unwrap();
6476
6477    pane.update(cx, |pane, cx| {
6478        assert_eq!(pane.items_len(), 2);
6479        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6480        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6481        assert_eq!(
6482            pane.preview_item_id(),
6483            Some(pane.items().nth(1).unwrap().item_id())
6484        );
6485
6486        assert!(pane.can_navigate_backward());
6487        assert!(pane.can_navigate_forward());
6488    });
6489
6490    // Close permanent tab
6491    pane.update_in(cx, |pane, window, cx| {
6492        let id = pane.items().next().unwrap().item_id();
6493        pane.close_item_by_id(id, workspace::SaveIntent::Skip, window, cx)
6494    })
6495    .await
6496    .unwrap();
6497
6498    pane.update(cx, |pane, cx| {
6499        assert_eq!(pane.items_len(), 1);
6500        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6501        assert_eq!(
6502            pane.preview_item_id(),
6503            Some(pane.items().next().unwrap().item_id())
6504        );
6505
6506        assert!(pane.can_navigate_backward());
6507        assert!(pane.can_navigate_forward());
6508    });
6509
6510    // Split pane to the right
6511    pane.update(cx, |pane, cx| {
6512        pane.split(workspace::SplitDirection::Right, cx);
6513    });
6514
6515    let right_pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6516
6517    pane.update(cx, |pane, cx| {
6518        assert_eq!(pane.items_len(), 1);
6519        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6520        assert_eq!(
6521            pane.preview_item_id(),
6522            Some(pane.items().next().unwrap().item_id())
6523        );
6524
6525        assert!(pane.can_navigate_backward());
6526        assert!(pane.can_navigate_forward());
6527    });
6528
6529    right_pane.update(cx, |pane, cx| {
6530        assert_eq!(pane.items_len(), 1);
6531        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6532        assert_eq!(pane.preview_item_id(), None);
6533
6534        assert!(!pane.can_navigate_backward());
6535        assert!(!pane.can_navigate_forward());
6536    });
6537
6538    // Open item 2 as preview in right pane
6539    workspace
6540        .update_in(cx, |workspace, window, cx| {
6541            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6542        })
6543        .await
6544        .unwrap();
6545
6546    pane.update(cx, |pane, cx| {
6547        assert_eq!(pane.items_len(), 1);
6548        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6549        assert_eq!(
6550            pane.preview_item_id(),
6551            Some(pane.items().next().unwrap().item_id())
6552        );
6553
6554        assert!(pane.can_navigate_backward());
6555        assert!(pane.can_navigate_forward());
6556    });
6557
6558    right_pane.update(cx, |pane, cx| {
6559        assert_eq!(pane.items_len(), 2);
6560        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6561        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6562        assert_eq!(
6563            pane.preview_item_id(),
6564            Some(pane.items().nth(1).unwrap().item_id())
6565        );
6566
6567        assert!(pane.can_navigate_backward());
6568        assert!(!pane.can_navigate_forward());
6569    });
6570
6571    // Focus left pane
6572    workspace.update_in(cx, |workspace, window, cx| {
6573        workspace.activate_pane_in_direction(workspace::SplitDirection::Left, window, cx)
6574    });
6575
6576    // Open item 2 as preview in left pane
6577    workspace
6578        .update_in(cx, |workspace, window, cx| {
6579            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6580        })
6581        .await
6582        .unwrap();
6583
6584    pane.update(cx, |pane, cx| {
6585        assert_eq!(pane.items_len(), 1);
6586        assert_eq!(get_path(pane, 0, cx), path_2.clone());
6587        assert_eq!(
6588            pane.preview_item_id(),
6589            Some(pane.items().next().unwrap().item_id())
6590        );
6591
6592        assert!(pane.can_navigate_backward());
6593        assert!(!pane.can_navigate_forward());
6594    });
6595
6596    right_pane.update(cx, |pane, cx| {
6597        assert_eq!(pane.items_len(), 2);
6598        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6599        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6600        assert_eq!(
6601            pane.preview_item_id(),
6602            Some(pane.items().nth(1).unwrap().item_id())
6603        );
6604
6605        assert!(pane.can_navigate_backward());
6606        assert!(!pane.can_navigate_forward());
6607    });
6608}
6609
6610#[gpui::test(iterations = 10)]
6611async fn test_context_collaboration_with_reconnect(
6612    executor: BackgroundExecutor,
6613    cx_a: &mut TestAppContext,
6614    cx_b: &mut TestAppContext,
6615) {
6616    let mut server = TestServer::start(executor.clone()).await;
6617    let client_a = server.create_client(cx_a, "user_a").await;
6618    let client_b = server.create_client(cx_b, "user_b").await;
6619    server
6620        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6621        .await;
6622    let active_call_a = cx_a.read(ActiveCall::global);
6623
6624    client_a.fs().insert_tree("/a", Default::default()).await;
6625    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
6626    let project_id = active_call_a
6627        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6628        .await
6629        .unwrap();
6630    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6631
6632    // Client A sees that a guest has joined.
6633    executor.run_until_parked();
6634
6635    project_a.read_with(cx_a, |project, _| {
6636        assert_eq!(project.collaborators().len(), 1);
6637    });
6638    project_b.read_with(cx_b, |project, _| {
6639        assert_eq!(project.collaborators().len(), 1);
6640    });
6641
6642    cx_a.update(context_server::init);
6643    cx_b.update(context_server::init);
6644    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
6645    let context_store_a = cx_a
6646        .update(|cx| {
6647            ContextStore::new(
6648                project_a.clone(),
6649                prompt_builder.clone(),
6650                Arc::new(SlashCommandWorkingSet::default()),
6651                cx,
6652            )
6653        })
6654        .await
6655        .unwrap();
6656    let context_store_b = cx_b
6657        .update(|cx| {
6658            ContextStore::new(
6659                project_b.clone(),
6660                prompt_builder.clone(),
6661                Arc::new(SlashCommandWorkingSet::default()),
6662                cx,
6663            )
6664        })
6665        .await
6666        .unwrap();
6667
6668    // Client A creates a new chats.
6669    let context_a = context_store_a.update(cx_a, |store, cx| store.create(cx));
6670    executor.run_until_parked();
6671
6672    // Client B retrieves host's contexts and joins one.
6673    let context_b = context_store_b
6674        .update(cx_b, |store, cx| {
6675            let host_contexts = store.host_contexts().to_vec();
6676            assert_eq!(host_contexts.len(), 1);
6677            store.open_remote_context(host_contexts[0].id.clone(), cx)
6678        })
6679        .await
6680        .unwrap();
6681
6682    // Host and guest make changes
6683    context_a.update(cx_a, |context, cx| {
6684        context.buffer().update(cx, |buffer, cx| {
6685            buffer.edit([(0..0, "Host change\n")], None, cx)
6686        })
6687    });
6688    context_b.update(cx_b, |context, cx| {
6689        context.buffer().update(cx, |buffer, cx| {
6690            buffer.edit([(0..0, "Guest change\n")], None, cx)
6691        })
6692    });
6693    executor.run_until_parked();
6694    assert_eq!(
6695        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6696        "Guest change\nHost change\n"
6697    );
6698    assert_eq!(
6699        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6700        "Guest change\nHost change\n"
6701    );
6702
6703    // Disconnect client A and make some changes while disconnected.
6704    server.disconnect_client(client_a.peer_id().unwrap());
6705    server.forbid_connections();
6706    context_a.update(cx_a, |context, cx| {
6707        context.buffer().update(cx, |buffer, cx| {
6708            buffer.edit([(0..0, "Host offline change\n")], None, cx)
6709        })
6710    });
6711    context_b.update(cx_b, |context, cx| {
6712        context.buffer().update(cx, |buffer, cx| {
6713            buffer.edit([(0..0, "Guest offline change\n")], None, cx)
6714        })
6715    });
6716    executor.run_until_parked();
6717    assert_eq!(
6718        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6719        "Host offline change\nGuest change\nHost change\n"
6720    );
6721    assert_eq!(
6722        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6723        "Guest offline change\nGuest change\nHost change\n"
6724    );
6725
6726    // Allow client A to reconnect and verify that contexts converge.
6727    server.allow_connections();
6728    executor.advance_clock(RECEIVE_TIMEOUT);
6729    assert_eq!(
6730        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6731        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6732    );
6733    assert_eq!(
6734        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6735        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6736    );
6737
6738    // Client A disconnects without being able to reconnect. Context B becomes readonly.
6739    server.forbid_connections();
6740    server.disconnect_client(client_a.peer_id().unwrap());
6741    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
6742    context_b.read_with(cx_b, |context, cx| {
6743        assert!(context.buffer().read(cx).read_only());
6744    });
6745}
6746
6747#[gpui::test]
6748async fn test_remote_git_branches(
6749    executor: BackgroundExecutor,
6750    cx_a: &mut TestAppContext,
6751    cx_b: &mut TestAppContext,
6752) {
6753    let mut server = TestServer::start(executor.clone()).await;
6754    let client_a = server.create_client(cx_a, "user_a").await;
6755    let client_b = server.create_client(cx_b, "user_b").await;
6756    server
6757        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6758        .await;
6759    let active_call_a = cx_a.read(ActiveCall::global);
6760
6761    client_a
6762        .fs()
6763        .insert_tree("/project", serde_json::json!({ ".git":{} }))
6764        .await;
6765    let branches = ["main", "dev", "feature-1"];
6766    client_a
6767        .fs()
6768        .insert_branches(Path::new("/project/.git"), &branches);
6769    let branches_set = branches
6770        .into_iter()
6771        .map(ToString::to_string)
6772        .collect::<HashSet<_>>();
6773
6774    let (project_a, worktree_id) = client_a.build_local_project("/project", cx_a).await;
6775
6776    let project_id = active_call_a
6777        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6778        .await
6779        .unwrap();
6780    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6781
6782    // Client A sees that a guest has joined and the repo has been populated
6783    executor.run_until_parked();
6784
6785    let repo_b = cx_b.update(|cx| project_b.read(cx).active_repository(cx).unwrap());
6786
6787    let root_path = ProjectPath::root_path(worktree_id);
6788
6789    let branches_b = cx_b
6790        .update(|cx| repo_b.update(cx, |repository, _| repository.branches()))
6791        .await
6792        .unwrap()
6793        .unwrap();
6794
6795    let new_branch = branches[2];
6796
6797    let branches_b = branches_b
6798        .into_iter()
6799        .map(|branch| branch.name.to_string())
6800        .collect::<HashSet<_>>();
6801
6802    assert_eq!(branches_b, branches_set);
6803
6804    cx_b.update(|cx| repo_b.read(cx).change_branch(new_branch.to_string()))
6805        .await
6806        .unwrap()
6807        .unwrap();
6808
6809    executor.run_until_parked();
6810
6811    let host_branch = cx_a.update(|cx| {
6812        project_a.update(cx, |project, cx| {
6813            project.worktree_store().update(cx, |worktree_store, cx| {
6814                worktree_store
6815                    .current_branch(root_path.clone(), cx)
6816                    .unwrap()
6817            })
6818        })
6819    });
6820
6821    assert_eq!(host_branch.name, branches[2]);
6822
6823    // Also try creating a new branch
6824    cx_b.update(|cx| {
6825        repo_b
6826            .read(cx)
6827            .create_branch("totally-new-branch".to_string())
6828    })
6829    .await
6830    .unwrap()
6831    .unwrap();
6832
6833    cx_b.update(|cx| {
6834        repo_b
6835            .read(cx)
6836            .change_branch("totally-new-branch".to_string())
6837    })
6838    .await
6839    .unwrap()
6840    .unwrap();
6841
6842    executor.run_until_parked();
6843
6844    let host_branch = cx_a.update(|cx| {
6845        project_a.update(cx, |project, cx| {
6846            project.worktree_store().update(cx, |worktree_store, cx| {
6847                worktree_store.current_branch(root_path, cx).unwrap()
6848            })
6849        })
6850    });
6851
6852    assert_eq!(host_branch.name, "totally-new-branch");
6853}