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