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 prompt_store::PromptBuilder;
  18
  19use git::status::{FileStatus, StatusCode, TrackedStatus, UnmergedStatus, UnmergedStatusCode};
  20use gpui::{
  21    px, size, App, BackgroundExecutor, Entity, Modifiers, MouseButton, MouseDownEvent,
  22    TestAppContext, UpdateGlobal,
  23};
  24use language::{
  25    language_settings::{
  26        AllLanguageSettings, Formatter, FormatterList, PrettierSettings, SelectedFormatter,
  27    },
  28    tree_sitter_rust, tree_sitter_typescript, Diagnostic, DiagnosticEntry, FakeLspAdapter,
  29    Language, LanguageConfig, LanguageMatcher, LineEnding, OffsetRangeExt, Point, Rope,
  30};
  31use lsp::LanguageServerId;
  32use parking_lot::Mutex;
  33use project::{
  34    lsp_store::{FormatTrigger, LspFormatTarget},
  35    search::{SearchQuery, SearchResult},
  36    DiagnosticSummary, HoverBlockKind, Project, ProjectPath,
  37};
  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(|_| future::pending()));
 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(|_| future::pending()));
1160    client_b.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
1161    client_c.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
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 buffer_remote_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(buffer_remote_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 = buffer_remote_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(buffer_remote_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 = buffer_remote_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    remote_unstaged_diff_a.read_with(cx_b, |diff, cx| {
2707        let buffer = buffer_remote_a.read(cx);
2708        assert_eq!(
2709            diff.base_text_string().as_deref(),
2710            Some(new_staged_text.as_str())
2711        );
2712        assert_hunks(
2713            diff.hunks_in_row_range(0..4, buffer, cx),
2714            buffer,
2715            &diff.base_text_string().unwrap(),
2716            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2717        );
2718    });
2719
2720    remote_uncommitted_diff_a.read_with(cx_b, |diff, cx| {
2721        let buffer = buffer_remote_a.read(cx);
2722        assert_eq!(
2723            diff.base_text_string().as_deref(),
2724            Some(new_committed_text.as_str())
2725        );
2726        assert_hunks(
2727            diff.hunks_in_row_range(0..4, buffer, cx),
2728            buffer,
2729            &diff.base_text_string().unwrap(),
2730            &[(
2731                1..2,
2732                "TWO_HUNDRED\n",
2733                "two\n",
2734                DiffHunkStatus::modified(DiffHunkSecondaryStatus::OverlapsWithSecondaryHunk),
2735            )],
2736        );
2737    });
2738
2739    // Nested git dir
2740    let staged_text = "
2741        one
2742        three
2743    "
2744    .unindent();
2745
2746    let new_staged_text = "
2747        one
2748        two
2749    "
2750    .unindent();
2751
2752    client_a.fs().set_index_for_repo(
2753        Path::new("/dir/sub/.git"),
2754        &[("b.txt".into(), staged_text.clone())],
2755    );
2756
2757    // Create the buffer
2758    let buffer_local_b = project_local
2759        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2760        .await
2761        .unwrap();
2762    let local_unstaged_diff_b = project_local
2763        .update(cx_a, |p, cx| {
2764            p.open_unstaged_diff(buffer_local_b.clone(), cx)
2765        })
2766        .await
2767        .unwrap();
2768
2769    // Wait for it to catch up to the new diff
2770    executor.run_until_parked();
2771    local_unstaged_diff_b.read_with(cx_a, |diff, cx| {
2772        let buffer = buffer_local_b.read(cx);
2773        assert_eq!(
2774            diff.base_text_string().as_deref(),
2775            Some(staged_text.as_str())
2776        );
2777        assert_hunks(
2778            diff.hunks_in_row_range(0..4, buffer, cx),
2779            buffer,
2780            &diff.base_text_string().unwrap(),
2781            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2782        );
2783    });
2784
2785    // Create remote buffer
2786    let buffer_remote_b = project_remote
2787        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2788        .await
2789        .unwrap();
2790    let remote_unstaged_diff_b = project_remote
2791        .update(cx_b, |p, cx| {
2792            p.open_unstaged_diff(buffer_remote_b.clone(), cx)
2793        })
2794        .await
2795        .unwrap();
2796
2797    executor.run_until_parked();
2798    remote_unstaged_diff_b.read_with(cx_b, |diff, cx| {
2799        let buffer = buffer_remote_b.read(cx);
2800        assert_eq!(
2801            diff.base_text_string().as_deref(),
2802            Some(staged_text.as_str())
2803        );
2804        assert_hunks(
2805            diff.hunks_in_row_range(0..4, buffer, cx),
2806            buffer,
2807            &staged_text,
2808            &[(1..2, "", "two\n", DiffHunkStatus::added_none())],
2809        );
2810    });
2811
2812    // Updatet the staged text
2813    client_a.fs().set_index_for_repo(
2814        Path::new("/dir/sub/.git"),
2815        &[("b.txt".into(), new_staged_text.clone())],
2816    );
2817
2818    // Wait for buffer_local_b to receive it
2819    executor.run_until_parked();
2820    local_unstaged_diff_b.read_with(cx_a, |diff, cx| {
2821        let buffer = buffer_local_b.read(cx);
2822        assert_eq!(
2823            diff.base_text_string().as_deref(),
2824            Some(new_staged_text.as_str())
2825        );
2826        assert_hunks(
2827            diff.hunks_in_row_range(0..4, buffer, cx),
2828            buffer,
2829            &new_staged_text,
2830            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2831        );
2832    });
2833
2834    remote_unstaged_diff_b.read_with(cx_b, |diff, cx| {
2835        let buffer = buffer_remote_b.read(cx);
2836        assert_eq!(
2837            diff.base_text_string().as_deref(),
2838            Some(new_staged_text.as_str())
2839        );
2840        assert_hunks(
2841            diff.hunks_in_row_range(0..4, buffer, cx),
2842            buffer,
2843            &new_staged_text,
2844            &[(2..3, "", "three\n", DiffHunkStatus::added_none())],
2845        );
2846    });
2847}
2848
2849#[gpui::test]
2850async fn test_git_branch_name(
2851    executor: BackgroundExecutor,
2852    cx_a: &mut TestAppContext,
2853    cx_b: &mut TestAppContext,
2854    cx_c: &mut TestAppContext,
2855) {
2856    let mut server = TestServer::start(executor.clone()).await;
2857    let client_a = server.create_client(cx_a, "user_a").await;
2858    let client_b = server.create_client(cx_b, "user_b").await;
2859    let client_c = server.create_client(cx_c, "user_c").await;
2860    server
2861        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2862        .await;
2863    let active_call_a = cx_a.read(ActiveCall::global);
2864
2865    client_a
2866        .fs()
2867        .insert_tree(
2868            "/dir",
2869            json!({
2870            ".git": {},
2871            }),
2872        )
2873        .await;
2874
2875    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2876    let project_id = active_call_a
2877        .update(cx_a, |call, cx| {
2878            call.share_project(project_local.clone(), cx)
2879        })
2880        .await
2881        .unwrap();
2882
2883    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
2884    client_a
2885        .fs()
2886        .set_branch_name(Path::new("/dir/.git"), Some("branch-1"));
2887
2888    // Wait for it to catch up to the new branch
2889    executor.run_until_parked();
2890
2891    #[track_caller]
2892    fn assert_branch(branch_name: Option<impl Into<String>>, project: &Project, cx: &App) {
2893        let branch_name = branch_name.map(Into::into);
2894        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
2895        assert_eq!(worktrees.len(), 1);
2896        let worktree = worktrees[0].clone();
2897        let root_entry = worktree.read(cx).snapshot().root_git_entry().unwrap();
2898        assert_eq!(
2899            root_entry.branch().map(|branch| branch.name.to_string()),
2900            branch_name
2901        );
2902    }
2903
2904    // Smoke test branch reading
2905
2906    project_local.read_with(cx_a, |project, cx| {
2907        assert_branch(Some("branch-1"), project, cx)
2908    });
2909
2910    project_remote.read_with(cx_b, |project, cx| {
2911        assert_branch(Some("branch-1"), project, cx)
2912    });
2913
2914    client_a
2915        .fs()
2916        .set_branch_name(Path::new("/dir/.git"), Some("branch-2"));
2917
2918    // Wait for buffer_local_a to receive it
2919    executor.run_until_parked();
2920
2921    // Smoke test branch reading
2922
2923    project_local.read_with(cx_a, |project, cx| {
2924        assert_branch(Some("branch-2"), project, cx)
2925    });
2926
2927    project_remote.read_with(cx_b, |project, cx| {
2928        assert_branch(Some("branch-2"), project, cx)
2929    });
2930
2931    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
2932    executor.run_until_parked();
2933
2934    project_remote_c.read_with(cx_c, |project, cx| {
2935        assert_branch(Some("branch-2"), project, cx)
2936    });
2937}
2938
2939#[gpui::test]
2940async fn test_git_status_sync(
2941    executor: BackgroundExecutor,
2942    cx_a: &mut TestAppContext,
2943    cx_b: &mut TestAppContext,
2944    cx_c: &mut TestAppContext,
2945) {
2946    let mut server = TestServer::start(executor.clone()).await;
2947    let client_a = server.create_client(cx_a, "user_a").await;
2948    let client_b = server.create_client(cx_b, "user_b").await;
2949    let client_c = server.create_client(cx_c, "user_c").await;
2950    server
2951        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2952        .await;
2953    let active_call_a = cx_a.read(ActiveCall::global);
2954
2955    client_a
2956        .fs()
2957        .insert_tree(
2958            "/dir",
2959            json!({
2960            ".git": {},
2961            "a.txt": "a",
2962            "b.txt": "b",
2963            }),
2964        )
2965        .await;
2966
2967    const A_TXT: &str = "a.txt";
2968    const B_TXT: &str = "b.txt";
2969
2970    const A_STATUS_START: FileStatus = FileStatus::Tracked(TrackedStatus {
2971        index_status: StatusCode::Added,
2972        worktree_status: StatusCode::Modified,
2973    });
2974    const B_STATUS_START: FileStatus = FileStatus::Unmerged(UnmergedStatus {
2975        first_head: UnmergedStatusCode::Updated,
2976        second_head: UnmergedStatusCode::Deleted,
2977    });
2978
2979    client_a.fs().set_status_for_repo_via_git_operation(
2980        Path::new("/dir/.git"),
2981        &[
2982            (Path::new(A_TXT), A_STATUS_START),
2983            (Path::new(B_TXT), B_STATUS_START),
2984        ],
2985    );
2986
2987    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2988    let project_id = active_call_a
2989        .update(cx_a, |call, cx| {
2990            call.share_project(project_local.clone(), cx)
2991        })
2992        .await
2993        .unwrap();
2994
2995    let project_remote = client_b.join_remote_project(project_id, cx_b).await;
2996
2997    // Wait for it to catch up to the new status
2998    executor.run_until_parked();
2999
3000    #[track_caller]
3001    fn assert_status(
3002        file: &impl AsRef<Path>,
3003        status: Option<FileStatus>,
3004        project: &Project,
3005        cx: &App,
3006    ) {
3007        let file = file.as_ref();
3008        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
3009        assert_eq!(worktrees.len(), 1);
3010        let worktree = worktrees[0].clone();
3011        let snapshot = worktree.read(cx).snapshot();
3012        assert_eq!(snapshot.status_for_file(file), status);
3013    }
3014
3015    project_local.read_with(cx_a, |project, cx| {
3016        assert_status(&Path::new(A_TXT), Some(A_STATUS_START), project, cx);
3017        assert_status(&Path::new(B_TXT), Some(B_STATUS_START), project, cx);
3018    });
3019
3020    project_remote.read_with(cx_b, |project, cx| {
3021        assert_status(&Path::new(A_TXT), Some(A_STATUS_START), project, cx);
3022        assert_status(&Path::new(B_TXT), Some(B_STATUS_START), project, cx);
3023    });
3024
3025    const A_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3026        index_status: StatusCode::Added,
3027        worktree_status: StatusCode::Unmodified,
3028    });
3029    const B_STATUS_END: FileStatus = FileStatus::Tracked(TrackedStatus {
3030        index_status: StatusCode::Deleted,
3031        worktree_status: StatusCode::Unmodified,
3032    });
3033
3034    client_a.fs().set_status_for_repo_via_working_copy_change(
3035        Path::new("/dir/.git"),
3036        &[
3037            (Path::new(A_TXT), A_STATUS_END),
3038            (Path::new(B_TXT), B_STATUS_END),
3039        ],
3040    );
3041
3042    // Wait for buffer_local_a to receive it
3043    executor.run_until_parked();
3044
3045    // Smoke test status reading
3046
3047    project_local.read_with(cx_a, |project, cx| {
3048        assert_status(&Path::new(A_TXT), Some(A_STATUS_END), project, cx);
3049        assert_status(&Path::new(B_TXT), Some(B_STATUS_END), project, cx);
3050    });
3051
3052    project_remote.read_with(cx_b, |project, cx| {
3053        assert_status(&Path::new(A_TXT), Some(A_STATUS_END), project, cx);
3054        assert_status(&Path::new(B_TXT), Some(B_STATUS_END), project, cx);
3055    });
3056
3057    // And synchronization while joining
3058    let project_remote_c = client_c.join_remote_project(project_id, cx_c).await;
3059    executor.run_until_parked();
3060
3061    project_remote_c.read_with(cx_c, |project, cx| {
3062        assert_status(&Path::new(A_TXT), Some(A_STATUS_END), project, cx);
3063        assert_status(&Path::new(B_TXT), Some(B_STATUS_END), project, cx);
3064    });
3065}
3066
3067#[gpui::test(iterations = 10)]
3068async fn test_fs_operations(
3069    executor: BackgroundExecutor,
3070    cx_a: &mut TestAppContext,
3071    cx_b: &mut TestAppContext,
3072) {
3073    let mut server = TestServer::start(executor.clone()).await;
3074    let client_a = server.create_client(cx_a, "user_a").await;
3075    let client_b = server.create_client(cx_b, "user_b").await;
3076    server
3077        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3078        .await;
3079    let active_call_a = cx_a.read(ActiveCall::global);
3080
3081    client_a
3082        .fs()
3083        .insert_tree(
3084            "/dir",
3085            json!({
3086                "a.txt": "a-contents",
3087                "b.txt": "b-contents",
3088            }),
3089        )
3090        .await;
3091    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3092    let project_id = active_call_a
3093        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3094        .await
3095        .unwrap();
3096    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3097
3098    let worktree_a = project_a.read_with(cx_a, |project, cx| project.worktrees(cx).next().unwrap());
3099    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3100
3101    let entry = project_b
3102        .update(cx_b, |project, cx| {
3103            project.create_entry((worktree_id, "c.txt"), false, cx)
3104        })
3105        .await
3106        .unwrap()
3107        .to_included()
3108        .unwrap();
3109
3110    worktree_a.read_with(cx_a, |worktree, _| {
3111        assert_eq!(
3112            worktree
3113                .paths()
3114                .map(|p| p.to_string_lossy())
3115                .collect::<Vec<_>>(),
3116            ["a.txt", "b.txt", "c.txt"]
3117        );
3118    });
3119
3120    worktree_b.read_with(cx_b, |worktree, _| {
3121        assert_eq!(
3122            worktree
3123                .paths()
3124                .map(|p| p.to_string_lossy())
3125                .collect::<Vec<_>>(),
3126            ["a.txt", "b.txt", "c.txt"]
3127        );
3128    });
3129
3130    project_b
3131        .update(cx_b, |project, cx| {
3132            project.rename_entry(entry.id, Path::new("d.txt"), cx)
3133        })
3134        .await
3135        .unwrap()
3136        .to_included()
3137        .unwrap();
3138
3139    worktree_a.read_with(cx_a, |worktree, _| {
3140        assert_eq!(
3141            worktree
3142                .paths()
3143                .map(|p| p.to_string_lossy())
3144                .collect::<Vec<_>>(),
3145            ["a.txt", "b.txt", "d.txt"]
3146        );
3147    });
3148
3149    worktree_b.read_with(cx_b, |worktree, _| {
3150        assert_eq!(
3151            worktree
3152                .paths()
3153                .map(|p| p.to_string_lossy())
3154                .collect::<Vec<_>>(),
3155            ["a.txt", "b.txt", "d.txt"]
3156        );
3157    });
3158
3159    let dir_entry = project_b
3160        .update(cx_b, |project, cx| {
3161            project.create_entry((worktree_id, "DIR"), true, cx)
3162        })
3163        .await
3164        .unwrap()
3165        .to_included()
3166        .unwrap();
3167
3168    worktree_a.read_with(cx_a, |worktree, _| {
3169        assert_eq!(
3170            worktree
3171                .paths()
3172                .map(|p| p.to_string_lossy())
3173                .collect::<Vec<_>>(),
3174            ["DIR", "a.txt", "b.txt", "d.txt"]
3175        );
3176    });
3177
3178    worktree_b.read_with(cx_b, |worktree, _| {
3179        assert_eq!(
3180            worktree
3181                .paths()
3182                .map(|p| p.to_string_lossy())
3183                .collect::<Vec<_>>(),
3184            ["DIR", "a.txt", "b.txt", "d.txt"]
3185        );
3186    });
3187
3188    project_b
3189        .update(cx_b, |project, cx| {
3190            project.create_entry((worktree_id, "DIR/e.txt"), false, cx)
3191        })
3192        .await
3193        .unwrap()
3194        .to_included()
3195        .unwrap();
3196
3197    project_b
3198        .update(cx_b, |project, cx| {
3199            project.create_entry((worktree_id, "DIR/SUBDIR"), true, cx)
3200        })
3201        .await
3202        .unwrap()
3203        .to_included()
3204        .unwrap();
3205
3206    project_b
3207        .update(cx_b, |project, cx| {
3208            project.create_entry((worktree_id, "DIR/SUBDIR/f.txt"), false, cx)
3209        })
3210        .await
3211        .unwrap()
3212        .to_included()
3213        .unwrap();
3214
3215    worktree_a.read_with(cx_a, |worktree, _| {
3216        assert_eq!(
3217            worktree
3218                .paths()
3219                .map(|p| p.to_string_lossy())
3220                .collect::<Vec<_>>(),
3221            [
3222                "DIR",
3223                "DIR/SUBDIR",
3224                "DIR/SUBDIR/f.txt",
3225                "DIR/e.txt",
3226                "a.txt",
3227                "b.txt",
3228                "d.txt"
3229            ]
3230        );
3231    });
3232
3233    worktree_b.read_with(cx_b, |worktree, _| {
3234        assert_eq!(
3235            worktree
3236                .paths()
3237                .map(|p| p.to_string_lossy())
3238                .collect::<Vec<_>>(),
3239            [
3240                "DIR",
3241                "DIR/SUBDIR",
3242                "DIR/SUBDIR/f.txt",
3243                "DIR/e.txt",
3244                "a.txt",
3245                "b.txt",
3246                "d.txt"
3247            ]
3248        );
3249    });
3250
3251    project_b
3252        .update(cx_b, |project, cx| {
3253            project.copy_entry(entry.id, None, Path::new("f.txt"), cx)
3254        })
3255        .await
3256        .unwrap()
3257        .unwrap();
3258
3259    worktree_a.read_with(cx_a, |worktree, _| {
3260        assert_eq!(
3261            worktree
3262                .paths()
3263                .map(|p| p.to_string_lossy())
3264                .collect::<Vec<_>>(),
3265            [
3266                "DIR",
3267                "DIR/SUBDIR",
3268                "DIR/SUBDIR/f.txt",
3269                "DIR/e.txt",
3270                "a.txt",
3271                "b.txt",
3272                "d.txt",
3273                "f.txt"
3274            ]
3275        );
3276    });
3277
3278    worktree_b.read_with(cx_b, |worktree, _| {
3279        assert_eq!(
3280            worktree
3281                .paths()
3282                .map(|p| p.to_string_lossy())
3283                .collect::<Vec<_>>(),
3284            [
3285                "DIR",
3286                "DIR/SUBDIR",
3287                "DIR/SUBDIR/f.txt",
3288                "DIR/e.txt",
3289                "a.txt",
3290                "b.txt",
3291                "d.txt",
3292                "f.txt"
3293            ]
3294        );
3295    });
3296
3297    project_b
3298        .update(cx_b, |project, cx| {
3299            project.delete_entry(dir_entry.id, false, cx).unwrap()
3300        })
3301        .await
3302        .unwrap();
3303    executor.run_until_parked();
3304
3305    worktree_a.read_with(cx_a, |worktree, _| {
3306        assert_eq!(
3307            worktree
3308                .paths()
3309                .map(|p| p.to_string_lossy())
3310                .collect::<Vec<_>>(),
3311            ["a.txt", "b.txt", "d.txt", "f.txt"]
3312        );
3313    });
3314
3315    worktree_b.read_with(cx_b, |worktree, _| {
3316        assert_eq!(
3317            worktree
3318                .paths()
3319                .map(|p| p.to_string_lossy())
3320                .collect::<Vec<_>>(),
3321            ["a.txt", "b.txt", "d.txt", "f.txt"]
3322        );
3323    });
3324
3325    project_b
3326        .update(cx_b, |project, cx| {
3327            project.delete_entry(entry.id, false, cx).unwrap()
3328        })
3329        .await
3330        .unwrap();
3331
3332    worktree_a.read_with(cx_a, |worktree, _| {
3333        assert_eq!(
3334            worktree
3335                .paths()
3336                .map(|p| p.to_string_lossy())
3337                .collect::<Vec<_>>(),
3338            ["a.txt", "b.txt", "f.txt"]
3339        );
3340    });
3341
3342    worktree_b.read_with(cx_b, |worktree, _| {
3343        assert_eq!(
3344            worktree
3345                .paths()
3346                .map(|p| p.to_string_lossy())
3347                .collect::<Vec<_>>(),
3348            ["a.txt", "b.txt", "f.txt"]
3349        );
3350    });
3351}
3352
3353#[gpui::test(iterations = 10)]
3354async fn test_local_settings(
3355    executor: BackgroundExecutor,
3356    cx_a: &mut TestAppContext,
3357    cx_b: &mut TestAppContext,
3358) {
3359    let mut server = TestServer::start(executor.clone()).await;
3360    let client_a = server.create_client(cx_a, "user_a").await;
3361    let client_b = server.create_client(cx_b, "user_b").await;
3362    server
3363        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3364        .await;
3365    let active_call_a = cx_a.read(ActiveCall::global);
3366
3367    // As client A, open a project that contains some local settings files
3368    client_a
3369        .fs()
3370        .insert_tree(
3371            "/dir",
3372            json!({
3373                ".zed": {
3374                    "settings.json": r#"{ "tab_size": 2 }"#
3375                },
3376                "a": {
3377                    ".zed": {
3378                        "settings.json": r#"{ "tab_size": 8 }"#
3379                    },
3380                    "a.txt": "a-contents",
3381                },
3382                "b": {
3383                    "b.txt": "b-contents",
3384                }
3385            }),
3386        )
3387        .await;
3388    let (project_a, _) = client_a.build_local_project("/dir", cx_a).await;
3389    executor.run_until_parked();
3390    let project_id = active_call_a
3391        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3392        .await
3393        .unwrap();
3394    executor.run_until_parked();
3395
3396    // As client B, join that project and observe the local settings.
3397    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3398
3399    let worktree_b = project_b.read_with(cx_b, |project, cx| project.worktrees(cx).next().unwrap());
3400    executor.run_until_parked();
3401    cx_b.read(|cx| {
3402        let store = cx.global::<SettingsStore>();
3403        assert_eq!(
3404            store
3405                .local_settings(worktree_b.read(cx).id())
3406                .collect::<Vec<_>>(),
3407            &[
3408                (Path::new("").into(), r#"{"tab_size":2}"#.to_string()),
3409                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3410            ]
3411        )
3412    });
3413
3414    // As client A, update a settings file. As Client B, see the changed settings.
3415    client_a
3416        .fs()
3417        .insert_file("/dir/.zed/settings.json", r#"{}"#.into())
3418        .await;
3419    executor.run_until_parked();
3420    cx_b.read(|cx| {
3421        let store = cx.global::<SettingsStore>();
3422        assert_eq!(
3423            store
3424                .local_settings(worktree_b.read(cx).id())
3425                .collect::<Vec<_>>(),
3426            &[
3427                (Path::new("").into(), r#"{}"#.to_string()),
3428                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3429            ]
3430        )
3431    });
3432
3433    // As client A, create and remove some settings files. As client B, see the changed settings.
3434    client_a
3435        .fs()
3436        .remove_file("/dir/.zed/settings.json".as_ref(), Default::default())
3437        .await
3438        .unwrap();
3439    client_a
3440        .fs()
3441        .create_dir("/dir/b/.zed".as_ref())
3442        .await
3443        .unwrap();
3444    client_a
3445        .fs()
3446        .insert_file("/dir/b/.zed/settings.json", r#"{"tab_size": 4}"#.into())
3447        .await;
3448    executor.run_until_parked();
3449    cx_b.read(|cx| {
3450        let store = cx.global::<SettingsStore>();
3451        assert_eq!(
3452            store
3453                .local_settings(worktree_b.read(cx).id())
3454                .collect::<Vec<_>>(),
3455            &[
3456                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3457                (Path::new("b").into(), r#"{"tab_size":4}"#.to_string()),
3458            ]
3459        )
3460    });
3461
3462    // As client B, disconnect.
3463    server.forbid_connections();
3464    server.disconnect_client(client_b.peer_id().unwrap());
3465
3466    // As client A, change and remove settings files while client B is disconnected.
3467    client_a
3468        .fs()
3469        .insert_file("/dir/a/.zed/settings.json", r#"{"hard_tabs":true}"#.into())
3470        .await;
3471    client_a
3472        .fs()
3473        .remove_file("/dir/b/.zed/settings.json".as_ref(), Default::default())
3474        .await
3475        .unwrap();
3476    executor.run_until_parked();
3477
3478    // As client B, reconnect and see the changed settings.
3479    server.allow_connections();
3480    executor.advance_clock(RECEIVE_TIMEOUT);
3481    cx_b.read(|cx| {
3482        let store = cx.global::<SettingsStore>();
3483        assert_eq!(
3484            store
3485                .local_settings(worktree_b.read(cx).id())
3486                .collect::<Vec<_>>(),
3487            &[(Path::new("a").into(), r#"{"hard_tabs":true}"#.to_string()),]
3488        )
3489    });
3490}
3491
3492#[gpui::test(iterations = 10)]
3493async fn test_buffer_conflict_after_save(
3494    executor: BackgroundExecutor,
3495    cx_a: &mut TestAppContext,
3496    cx_b: &mut TestAppContext,
3497) {
3498    let mut server = TestServer::start(executor.clone()).await;
3499    let client_a = server.create_client(cx_a, "user_a").await;
3500    let client_b = server.create_client(cx_b, "user_b").await;
3501    server
3502        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3503        .await;
3504    let active_call_a = cx_a.read(ActiveCall::global);
3505
3506    client_a
3507        .fs()
3508        .insert_tree(
3509            "/dir",
3510            json!({
3511                "a.txt": "a-contents",
3512            }),
3513        )
3514        .await;
3515    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3516    let project_id = active_call_a
3517        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3518        .await
3519        .unwrap();
3520    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3521
3522    // Open a buffer as client B
3523    let buffer_b = project_b
3524        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3525        .await
3526        .unwrap();
3527
3528    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "world ")], None, cx));
3529
3530    buffer_b.read_with(cx_b, |buf, _| {
3531        assert!(buf.is_dirty());
3532        assert!(!buf.has_conflict());
3533    });
3534
3535    project_b
3536        .update(cx_b, |project, cx| {
3537            project.save_buffer(buffer_b.clone(), cx)
3538        })
3539        .await
3540        .unwrap();
3541
3542    buffer_b.read_with(cx_b, |buffer_b, _| assert!(!buffer_b.is_dirty()));
3543
3544    buffer_b.read_with(cx_b, |buf, _| {
3545        assert!(!buf.has_conflict());
3546    });
3547
3548    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "hello ")], None, cx));
3549
3550    buffer_b.read_with(cx_b, |buf, _| {
3551        assert!(buf.is_dirty());
3552        assert!(!buf.has_conflict());
3553    });
3554}
3555
3556#[gpui::test(iterations = 10)]
3557async fn test_buffer_reloading(
3558    executor: BackgroundExecutor,
3559    cx_a: &mut TestAppContext,
3560    cx_b: &mut TestAppContext,
3561) {
3562    let mut server = TestServer::start(executor.clone()).await;
3563    let client_a = server.create_client(cx_a, "user_a").await;
3564    let client_b = server.create_client(cx_b, "user_b").await;
3565    server
3566        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3567        .await;
3568    let active_call_a = cx_a.read(ActiveCall::global);
3569
3570    client_a
3571        .fs()
3572        .insert_tree(
3573            "/dir",
3574            json!({
3575                "a.txt": "a\nb\nc",
3576            }),
3577        )
3578        .await;
3579    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3580    let project_id = active_call_a
3581        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3582        .await
3583        .unwrap();
3584    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3585
3586    // Open a buffer as client B
3587    let buffer_b = project_b
3588        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3589        .await
3590        .unwrap();
3591
3592    buffer_b.read_with(cx_b, |buf, _| {
3593        assert!(!buf.is_dirty());
3594        assert!(!buf.has_conflict());
3595        assert_eq!(buf.line_ending(), LineEnding::Unix);
3596    });
3597
3598    let new_contents = Rope::from("d\ne\nf");
3599    client_a
3600        .fs()
3601        .save("/dir/a.txt".as_ref(), &new_contents, LineEnding::Windows)
3602        .await
3603        .unwrap();
3604
3605    executor.run_until_parked();
3606
3607    buffer_b.read_with(cx_b, |buf, _| {
3608        assert_eq!(buf.text(), new_contents.to_string());
3609        assert!(!buf.is_dirty());
3610        assert!(!buf.has_conflict());
3611        assert_eq!(buf.line_ending(), LineEnding::Windows);
3612    });
3613}
3614
3615#[gpui::test(iterations = 10)]
3616async fn test_editing_while_guest_opens_buffer(
3617    executor: BackgroundExecutor,
3618    cx_a: &mut TestAppContext,
3619    cx_b: &mut TestAppContext,
3620) {
3621    let mut server = TestServer::start(executor.clone()).await;
3622    let client_a = server.create_client(cx_a, "user_a").await;
3623    let client_b = server.create_client(cx_b, "user_b").await;
3624    server
3625        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3626        .await;
3627    let active_call_a = cx_a.read(ActiveCall::global);
3628
3629    client_a
3630        .fs()
3631        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3632        .await;
3633    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3634    let project_id = active_call_a
3635        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3636        .await
3637        .unwrap();
3638    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3639
3640    // Open a buffer as client A
3641    let buffer_a = project_a
3642        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3643        .await
3644        .unwrap();
3645
3646    // Start opening the same buffer as client B
3647    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3648    let buffer_b = cx_b.executor().spawn(open_buffer);
3649
3650    // Edit the buffer as client A while client B is still opening it.
3651    cx_b.executor().simulate_random_delay().await;
3652    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "X")], None, cx));
3653    cx_b.executor().simulate_random_delay().await;
3654    buffer_a.update(cx_a, |buf, cx| buf.edit([(1..1, "Y")], None, cx));
3655
3656    let text = buffer_a.read_with(cx_a, |buf, _| buf.text());
3657    let buffer_b = buffer_b.await.unwrap();
3658    executor.run_until_parked();
3659
3660    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), text));
3661}
3662
3663#[gpui::test(iterations = 10)]
3664async fn test_leaving_worktree_while_opening_buffer(
3665    executor: BackgroundExecutor,
3666    cx_a: &mut TestAppContext,
3667    cx_b: &mut TestAppContext,
3668) {
3669    let mut server = TestServer::start(executor.clone()).await;
3670    let client_a = server.create_client(cx_a, "user_a").await;
3671    let client_b = server.create_client(cx_b, "user_b").await;
3672    server
3673        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3674        .await;
3675    let active_call_a = cx_a.read(ActiveCall::global);
3676
3677    client_a
3678        .fs()
3679        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3680        .await;
3681    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3682    let project_id = active_call_a
3683        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3684        .await
3685        .unwrap();
3686    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3687
3688    // See that a guest has joined as client A.
3689    executor.run_until_parked();
3690
3691    project_a.read_with(cx_a, |p, _| assert_eq!(p.collaborators().len(), 1));
3692
3693    // Begin opening a buffer as client B, but leave the project before the open completes.
3694    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3695    let buffer_b = cx_b.executor().spawn(open_buffer);
3696    cx_b.update(|_| drop(project_b));
3697    drop(buffer_b);
3698
3699    // See that the guest has left.
3700    executor.run_until_parked();
3701
3702    project_a.read_with(cx_a, |p, _| assert!(p.collaborators().is_empty()));
3703}
3704
3705#[gpui::test(iterations = 10)]
3706async fn test_canceling_buffer_opening(
3707    executor: BackgroundExecutor,
3708    cx_a: &mut TestAppContext,
3709    cx_b: &mut TestAppContext,
3710) {
3711    let mut server = TestServer::start(executor.clone()).await;
3712    let client_a = server.create_client(cx_a, "user_a").await;
3713    let client_b = server.create_client(cx_b, "user_b").await;
3714    server
3715        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3716        .await;
3717    let active_call_a = cx_a.read(ActiveCall::global);
3718
3719    client_a
3720        .fs()
3721        .insert_tree(
3722            "/dir",
3723            json!({
3724                "a.txt": "abc",
3725            }),
3726        )
3727        .await;
3728    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3729    let project_id = active_call_a
3730        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3731        .await
3732        .unwrap();
3733    let project_b = client_b.join_remote_project(project_id, cx_b).await;
3734
3735    let buffer_a = project_a
3736        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3737        .await
3738        .unwrap();
3739
3740    // Open a buffer as client B but cancel after a random amount of time.
3741    let buffer_b = project_b.update(cx_b, |p, cx| {
3742        p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3743    });
3744    executor.simulate_random_delay().await;
3745    drop(buffer_b);
3746
3747    // Try opening the same buffer again as client B, and ensure we can
3748    // still do it despite the cancellation above.
3749    let buffer_b = project_b
3750        .update(cx_b, |p, cx| {
3751            p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3752        })
3753        .await
3754        .unwrap();
3755
3756    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), "abc"));
3757}
3758
3759#[gpui::test(iterations = 10)]
3760async fn test_leaving_project(
3761    executor: BackgroundExecutor,
3762    cx_a: &mut TestAppContext,
3763    cx_b: &mut TestAppContext,
3764    cx_c: &mut TestAppContext,
3765) {
3766    let mut server = TestServer::start(executor.clone()).await;
3767    let client_a = server.create_client(cx_a, "user_a").await;
3768    let client_b = server.create_client(cx_b, "user_b").await;
3769    let client_c = server.create_client(cx_c, "user_c").await;
3770    server
3771        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3772        .await;
3773    let active_call_a = cx_a.read(ActiveCall::global);
3774
3775    client_a
3776        .fs()
3777        .insert_tree(
3778            "/a",
3779            json!({
3780                "a.txt": "a-contents",
3781                "b.txt": "b-contents",
3782            }),
3783        )
3784        .await;
3785    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
3786    let project_id = active_call_a
3787        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3788        .await
3789        .unwrap();
3790    let project_b1 = client_b.join_remote_project(project_id, cx_b).await;
3791    let project_c = client_c.join_remote_project(project_id, cx_c).await;
3792
3793    // Client A sees that a guest has joined.
3794    executor.run_until_parked();
3795
3796    project_a.read_with(cx_a, |project, _| {
3797        assert_eq!(project.collaborators().len(), 2);
3798    });
3799
3800    project_b1.read_with(cx_b, |project, _| {
3801        assert_eq!(project.collaborators().len(), 2);
3802    });
3803
3804    project_c.read_with(cx_c, |project, _| {
3805        assert_eq!(project.collaborators().len(), 2);
3806    });
3807
3808    // Client B opens a buffer.
3809    let buffer_b1 = project_b1
3810        .update(cx_b, |project, cx| {
3811            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3812            project.open_buffer((worktree_id, "a.txt"), cx)
3813        })
3814        .await
3815        .unwrap();
3816
3817    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3818
3819    // Drop client B's project and ensure client A and client C observe client B leaving.
3820    cx_b.update(|_| drop(project_b1));
3821    executor.run_until_parked();
3822
3823    project_a.read_with(cx_a, |project, _| {
3824        assert_eq!(project.collaborators().len(), 1);
3825    });
3826
3827    project_c.read_with(cx_c, |project, _| {
3828        assert_eq!(project.collaborators().len(), 1);
3829    });
3830
3831    // Client B re-joins the project and can open buffers as before.
3832    let project_b2 = client_b.join_remote_project(project_id, cx_b).await;
3833    executor.run_until_parked();
3834
3835    project_a.read_with(cx_a, |project, _| {
3836        assert_eq!(project.collaborators().len(), 2);
3837    });
3838
3839    project_b2.read_with(cx_b, |project, _| {
3840        assert_eq!(project.collaborators().len(), 2);
3841    });
3842
3843    project_c.read_with(cx_c, |project, _| {
3844        assert_eq!(project.collaborators().len(), 2);
3845    });
3846
3847    let buffer_b2 = project_b2
3848        .update(cx_b, |project, cx| {
3849            let worktree_id = project.worktrees(cx).next().unwrap().read(cx).id();
3850            project.open_buffer((worktree_id, "a.txt"), cx)
3851        })
3852        .await
3853        .unwrap();
3854
3855    buffer_b2.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3856
3857    project_a.read_with(cx_a, |project, _| {
3858        assert_eq!(project.collaborators().len(), 2);
3859    });
3860
3861    // Drop client B's connection and ensure client A and client C observe client B leaving.
3862    client_b.disconnect(&cx_b.to_async());
3863    executor.advance_clock(RECONNECT_TIMEOUT);
3864
3865    project_a.read_with(cx_a, |project, _| {
3866        assert_eq!(project.collaborators().len(), 1);
3867    });
3868
3869    project_b2.read_with(cx_b, |project, cx| {
3870        assert!(project.is_disconnected(cx));
3871    });
3872
3873    project_c.read_with(cx_c, |project, _| {
3874        assert_eq!(project.collaborators().len(), 1);
3875    });
3876
3877    // Client B can't join the project, unless they re-join the room.
3878    cx_b.spawn(|cx| {
3879        Project::in_room(
3880            project_id,
3881            client_b.app_state.client.clone(),
3882            client_b.user_store().clone(),
3883            client_b.language_registry().clone(),
3884            FakeFs::new(cx.background_executor().clone()),
3885            cx,
3886        )
3887    })
3888    .await
3889    .unwrap_err();
3890
3891    // Simulate connection loss for client C and ensure client A observes client C leaving the project.
3892    client_c.wait_for_current_user(cx_c).await;
3893    server.forbid_connections();
3894    server.disconnect_client(client_c.peer_id().unwrap());
3895    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
3896    executor.run_until_parked();
3897
3898    project_a.read_with(cx_a, |project, _| {
3899        assert_eq!(project.collaborators().len(), 0);
3900    });
3901
3902    project_b2.read_with(cx_b, |project, cx| {
3903        assert!(project.is_disconnected(cx));
3904    });
3905
3906    project_c.read_with(cx_c, |project, cx| {
3907        assert!(project.is_disconnected(cx));
3908    });
3909}
3910
3911#[gpui::test(iterations = 10)]
3912async fn test_collaborating_with_diagnostics(
3913    executor: BackgroundExecutor,
3914    cx_a: &mut TestAppContext,
3915    cx_b: &mut TestAppContext,
3916    cx_c: &mut TestAppContext,
3917) {
3918    let mut server = TestServer::start(executor.clone()).await;
3919    let client_a = server.create_client(cx_a, "user_a").await;
3920    let client_b = server.create_client(cx_b, "user_b").await;
3921    let client_c = server.create_client(cx_c, "user_c").await;
3922    server
3923        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3924        .await;
3925    let active_call_a = cx_a.read(ActiveCall::global);
3926
3927    client_a.language_registry().add(Arc::new(Language::new(
3928        LanguageConfig {
3929            name: "Rust".into(),
3930            matcher: LanguageMatcher {
3931                path_suffixes: vec!["rs".to_string()],
3932                ..Default::default()
3933            },
3934            ..Default::default()
3935        },
3936        Some(tree_sitter_rust::LANGUAGE.into()),
3937    )));
3938    let mut fake_language_servers = client_a
3939        .language_registry()
3940        .register_fake_lsp("Rust", Default::default());
3941
3942    // Share a project as client A
3943    client_a
3944        .fs()
3945        .insert_tree(
3946            "/a",
3947            json!({
3948                "a.rs": "let one = two",
3949                "other.rs": "",
3950            }),
3951        )
3952        .await;
3953    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
3954
3955    // Cause the language server to start.
3956    let _buffer = project_a
3957        .update(cx_a, |project, cx| {
3958            project.open_local_buffer_with_lsp("/a/other.rs", cx)
3959        })
3960        .await
3961        .unwrap();
3962
3963    // Simulate a language server reporting errors for a file.
3964    let mut fake_language_server = fake_language_servers.next().await.unwrap();
3965    fake_language_server
3966        .receive_notification::<lsp::notification::DidOpenTextDocument>()
3967        .await;
3968    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
3969        &lsp::PublishDiagnosticsParams {
3970            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
3971            version: None,
3972            diagnostics: vec![lsp::Diagnostic {
3973                severity: Some(lsp::DiagnosticSeverity::WARNING),
3974                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
3975                message: "message 0".to_string(),
3976                ..Default::default()
3977            }],
3978        },
3979    );
3980
3981    // Client A shares the project and, simultaneously, the language server
3982    // publishes a diagnostic. This is done to ensure that the server always
3983    // observes the latest diagnostics for a worktree.
3984    let project_id = active_call_a
3985        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3986        .await
3987        .unwrap();
3988    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
3989        &lsp::PublishDiagnosticsParams {
3990            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
3991            version: None,
3992            diagnostics: vec![lsp::Diagnostic {
3993                severity: Some(lsp::DiagnosticSeverity::ERROR),
3994                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
3995                message: "message 1".to_string(),
3996                ..Default::default()
3997            }],
3998        },
3999    );
4000
4001    // Join the worktree as client B.
4002    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4003
4004    // Wait for server to see the diagnostics update.
4005    executor.run_until_parked();
4006
4007    // Ensure client B observes the new diagnostics.
4008
4009    project_b.read_with(cx_b, |project, cx| {
4010        assert_eq!(
4011            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4012            &[(
4013                ProjectPath {
4014                    worktree_id,
4015                    path: Arc::from(Path::new("a.rs")),
4016                },
4017                LanguageServerId(0),
4018                DiagnosticSummary {
4019                    error_count: 1,
4020                    warning_count: 0,
4021                },
4022            )]
4023        )
4024    });
4025
4026    // Join project as client C and observe the diagnostics.
4027    let project_c = client_c.join_remote_project(project_id, cx_c).await;
4028    executor.run_until_parked();
4029    let project_c_diagnostic_summaries =
4030        Rc::new(RefCell::new(project_c.read_with(cx_c, |project, cx| {
4031            project.diagnostic_summaries(false, cx).collect::<Vec<_>>()
4032        })));
4033    project_c.update(cx_c, |_, cx| {
4034        let summaries = project_c_diagnostic_summaries.clone();
4035        cx.subscribe(&project_c, {
4036            move |p, _, event, cx| {
4037                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4038                    *summaries.borrow_mut() = p.diagnostic_summaries(false, cx).collect();
4039                }
4040            }
4041        })
4042        .detach();
4043    });
4044
4045    executor.run_until_parked();
4046    assert_eq!(
4047        project_c_diagnostic_summaries.borrow().as_slice(),
4048        &[(
4049            ProjectPath {
4050                worktree_id,
4051                path: Arc::from(Path::new("a.rs")),
4052            },
4053            LanguageServerId(0),
4054            DiagnosticSummary {
4055                error_count: 1,
4056                warning_count: 0,
4057            },
4058        )]
4059    );
4060
4061    // Simulate a language server reporting more errors for a file.
4062    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4063        &lsp::PublishDiagnosticsParams {
4064            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4065            version: None,
4066            diagnostics: vec![
4067                lsp::Diagnostic {
4068                    severity: Some(lsp::DiagnosticSeverity::ERROR),
4069                    range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
4070                    message: "message 1".to_string(),
4071                    ..Default::default()
4072                },
4073                lsp::Diagnostic {
4074                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4075                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 13)),
4076                    message: "message 2".to_string(),
4077                    ..Default::default()
4078                },
4079            ],
4080        },
4081    );
4082
4083    // Clients B and C get the updated summaries
4084    executor.run_until_parked();
4085
4086    project_b.read_with(cx_b, |project, cx| {
4087        assert_eq!(
4088            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4089            [(
4090                ProjectPath {
4091                    worktree_id,
4092                    path: Arc::from(Path::new("a.rs")),
4093                },
4094                LanguageServerId(0),
4095                DiagnosticSummary {
4096                    error_count: 1,
4097                    warning_count: 1,
4098                },
4099            )]
4100        );
4101    });
4102
4103    project_c.read_with(cx_c, |project, cx| {
4104        assert_eq!(
4105            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4106            [(
4107                ProjectPath {
4108                    worktree_id,
4109                    path: Arc::from(Path::new("a.rs")),
4110                },
4111                LanguageServerId(0),
4112                DiagnosticSummary {
4113                    error_count: 1,
4114                    warning_count: 1,
4115                },
4116            )]
4117        );
4118    });
4119
4120    // Open the file with the errors on client B. They should be present.
4121    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4122    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4123
4124    buffer_b.read_with(cx_b, |buffer, _| {
4125        assert_eq!(
4126            buffer
4127                .snapshot()
4128                .diagnostics_in_range::<_, Point>(0..buffer.len(), false)
4129                .collect::<Vec<_>>(),
4130            &[
4131                DiagnosticEntry {
4132                    range: Point::new(0, 4)..Point::new(0, 7),
4133                    diagnostic: Diagnostic {
4134                        group_id: 2,
4135                        message: "message 1".to_string(),
4136                        severity: lsp::DiagnosticSeverity::ERROR,
4137                        is_primary: true,
4138                        ..Default::default()
4139                    }
4140                },
4141                DiagnosticEntry {
4142                    range: Point::new(0, 10)..Point::new(0, 13),
4143                    diagnostic: Diagnostic {
4144                        group_id: 3,
4145                        severity: lsp::DiagnosticSeverity::WARNING,
4146                        message: "message 2".to_string(),
4147                        is_primary: true,
4148                        ..Default::default()
4149                    }
4150                }
4151            ]
4152        );
4153    });
4154
4155    // Simulate a language server reporting no errors for a file.
4156    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4157        &lsp::PublishDiagnosticsParams {
4158            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4159            version: None,
4160            diagnostics: vec![],
4161        },
4162    );
4163    executor.run_until_parked();
4164
4165    project_a.read_with(cx_a, |project, cx| {
4166        assert_eq!(
4167            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4168            []
4169        )
4170    });
4171
4172    project_b.read_with(cx_b, |project, cx| {
4173        assert_eq!(
4174            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4175            []
4176        )
4177    });
4178
4179    project_c.read_with(cx_c, |project, cx| {
4180        assert_eq!(
4181            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4182            []
4183        )
4184    });
4185}
4186
4187#[gpui::test(iterations = 10)]
4188async fn test_collaborating_with_lsp_progress_updates_and_diagnostics_ordering(
4189    executor: BackgroundExecutor,
4190    cx_a: &mut TestAppContext,
4191    cx_b: &mut TestAppContext,
4192) {
4193    let mut server = TestServer::start(executor.clone()).await;
4194    let client_a = server.create_client(cx_a, "user_a").await;
4195    let client_b = server.create_client(cx_b, "user_b").await;
4196    server
4197        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4198        .await;
4199
4200    client_a.language_registry().add(rust_lang());
4201    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4202        "Rust",
4203        FakeLspAdapter {
4204            disk_based_diagnostics_progress_token: Some("the-disk-based-token".into()),
4205            disk_based_diagnostics_sources: vec!["the-disk-based-diagnostics-source".into()],
4206            ..Default::default()
4207        },
4208    );
4209
4210    let file_names = &["one.rs", "two.rs", "three.rs", "four.rs", "five.rs"];
4211    client_a
4212        .fs()
4213        .insert_tree(
4214            "/test",
4215            json!({
4216                "one.rs": "const ONE: usize = 1;",
4217                "two.rs": "const TWO: usize = 2;",
4218                "three.rs": "const THREE: usize = 3;",
4219                "four.rs": "const FOUR: usize = 3;",
4220                "five.rs": "const FIVE: usize = 3;",
4221            }),
4222        )
4223        .await;
4224
4225    let (project_a, worktree_id) = client_a.build_local_project("/test", cx_a).await;
4226
4227    // Share a project as client A
4228    let active_call_a = cx_a.read(ActiveCall::global);
4229    let project_id = active_call_a
4230        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4231        .await
4232        .unwrap();
4233
4234    // Join the project as client B and open all three files.
4235    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4236    let guest_buffers = futures::future::try_join_all(file_names.iter().map(|file_name| {
4237        project_b.update(cx_b, |p, cx| {
4238            p.open_buffer_with_lsp((worktree_id, file_name), cx)
4239        })
4240    }))
4241    .await
4242    .unwrap();
4243
4244    // Simulate a language server reporting errors for a file.
4245    let fake_language_server = fake_language_servers.next().await.unwrap();
4246    fake_language_server
4247        .request::<lsp::request::WorkDoneProgressCreate>(lsp::WorkDoneProgressCreateParams {
4248            token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4249        })
4250        .await
4251        .unwrap();
4252    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4253        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4254        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::Begin(
4255            lsp::WorkDoneProgressBegin {
4256                title: "Progress Began".into(),
4257                ..Default::default()
4258            },
4259        )),
4260    });
4261    for file_name in file_names {
4262        fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4263            &lsp::PublishDiagnosticsParams {
4264                uri: lsp::Url::from_file_path(Path::new("/test").join(file_name)).unwrap(),
4265                version: None,
4266                diagnostics: vec![lsp::Diagnostic {
4267                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4268                    source: Some("the-disk-based-diagnostics-source".into()),
4269                    range: lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
4270                    message: "message one".to_string(),
4271                    ..Default::default()
4272                }],
4273            },
4274        );
4275    }
4276    fake_language_server.notify::<lsp::notification::Progress>(&lsp::ProgressParams {
4277        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4278        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::End(
4279            lsp::WorkDoneProgressEnd { message: None },
4280        )),
4281    });
4282
4283    // When the "disk base diagnostics finished" message is received, the buffers'
4284    // diagnostics are expected to be present.
4285    let disk_based_diagnostics_finished = Arc::new(AtomicBool::new(false));
4286    project_b.update(cx_b, {
4287        let project_b = project_b.clone();
4288        let disk_based_diagnostics_finished = disk_based_diagnostics_finished.clone();
4289        move |_, cx| {
4290            cx.subscribe(&project_b, move |_, _, event, cx| {
4291                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4292                    disk_based_diagnostics_finished.store(true, SeqCst);
4293                    for (buffer, _) in &guest_buffers {
4294                        assert_eq!(
4295                            buffer
4296                                .read(cx)
4297                                .snapshot()
4298                                .diagnostics_in_range::<_, usize>(0..5, false)
4299                                .count(),
4300                            1,
4301                            "expected a diagnostic for buffer {:?}",
4302                            buffer.read(cx).file().unwrap().path(),
4303                        );
4304                    }
4305                }
4306            })
4307            .detach();
4308        }
4309    });
4310
4311    executor.run_until_parked();
4312    assert!(disk_based_diagnostics_finished.load(SeqCst));
4313}
4314
4315#[gpui::test(iterations = 10)]
4316async fn test_reloading_buffer_manually(
4317    executor: BackgroundExecutor,
4318    cx_a: &mut TestAppContext,
4319    cx_b: &mut TestAppContext,
4320) {
4321    let mut server = TestServer::start(executor.clone()).await;
4322    let client_a = server.create_client(cx_a, "user_a").await;
4323    let client_b = server.create_client(cx_b, "user_b").await;
4324    server
4325        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4326        .await;
4327    let active_call_a = cx_a.read(ActiveCall::global);
4328
4329    client_a
4330        .fs()
4331        .insert_tree("/a", json!({ "a.rs": "let one = 1;" }))
4332        .await;
4333    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
4334    let buffer_a = project_a
4335        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4336        .await
4337        .unwrap();
4338    let project_id = active_call_a
4339        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4340        .await
4341        .unwrap();
4342
4343    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4344
4345    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4346    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4347    buffer_b.update(cx_b, |buffer, cx| {
4348        buffer.edit([(4..7, "six")], None, cx);
4349        buffer.edit([(10..11, "6")], None, cx);
4350        assert_eq!(buffer.text(), "let six = 6;");
4351        assert!(buffer.is_dirty());
4352        assert!(!buffer.has_conflict());
4353    });
4354    executor.run_until_parked();
4355
4356    buffer_a.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "let six = 6;"));
4357
4358    client_a
4359        .fs()
4360        .save(
4361            "/a/a.rs".as_ref(),
4362            &Rope::from("let seven = 7;"),
4363            LineEnding::Unix,
4364        )
4365        .await
4366        .unwrap();
4367    executor.run_until_parked();
4368
4369    buffer_a.read_with(cx_a, |buffer, _| assert!(buffer.has_conflict()));
4370
4371    buffer_b.read_with(cx_b, |buffer, _| assert!(buffer.has_conflict()));
4372
4373    project_b
4374        .update(cx_b, |project, cx| {
4375            project.reload_buffers(HashSet::from_iter([buffer_b.clone()]), true, cx)
4376        })
4377        .await
4378        .unwrap();
4379
4380    buffer_a.read_with(cx_a, |buffer, _| {
4381        assert_eq!(buffer.text(), "let seven = 7;");
4382        assert!(!buffer.is_dirty());
4383        assert!(!buffer.has_conflict());
4384    });
4385
4386    buffer_b.read_with(cx_b, |buffer, _| {
4387        assert_eq!(buffer.text(), "let seven = 7;");
4388        assert!(!buffer.is_dirty());
4389        assert!(!buffer.has_conflict());
4390    });
4391
4392    buffer_a.update(cx_a, |buffer, cx| {
4393        // Undoing on the host is a no-op when the reload was initiated by the guest.
4394        buffer.undo(cx);
4395        assert_eq!(buffer.text(), "let seven = 7;");
4396        assert!(!buffer.is_dirty());
4397        assert!(!buffer.has_conflict());
4398    });
4399    buffer_b.update(cx_b, |buffer, cx| {
4400        // Undoing on the guest rolls back the buffer to before it was reloaded but the conflict gets cleared.
4401        buffer.undo(cx);
4402        assert_eq!(buffer.text(), "let six = 6;");
4403        assert!(buffer.is_dirty());
4404        assert!(!buffer.has_conflict());
4405    });
4406}
4407
4408#[gpui::test(iterations = 10)]
4409async fn test_formatting_buffer(
4410    executor: BackgroundExecutor,
4411    cx_a: &mut TestAppContext,
4412    cx_b: &mut TestAppContext,
4413) {
4414    let mut server = TestServer::start(executor.clone()).await;
4415    let client_a = server.create_client(cx_a, "user_a").await;
4416    let client_b = server.create_client(cx_b, "user_b").await;
4417    server
4418        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4419        .await;
4420    let active_call_a = cx_a.read(ActiveCall::global);
4421
4422    client_a.language_registry().add(rust_lang());
4423    let mut fake_language_servers = client_a
4424        .language_registry()
4425        .register_fake_lsp("Rust", FakeLspAdapter::default());
4426
4427    // Here we insert a fake tree with a directory that exists on disk. This is needed
4428    // because later we'll invoke a command, which requires passing a working directory
4429    // that points to a valid location on disk.
4430    let directory = env::current_dir().unwrap();
4431    client_a
4432        .fs()
4433        .insert_tree(&directory, json!({ "a.rs": "let one = \"two\"" }))
4434        .await;
4435    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4436    let project_id = active_call_a
4437        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4438        .await
4439        .unwrap();
4440    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4441
4442    let buffer_b = project_b
4443        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4444        .await
4445        .unwrap();
4446
4447    let _handle = project_b.update(cx_b, |project, cx| {
4448        project.register_buffer_with_language_servers(&buffer_b, cx)
4449    });
4450    let fake_language_server = fake_language_servers.next().await.unwrap();
4451    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4452        Ok(Some(vec![
4453            lsp::TextEdit {
4454                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
4455                new_text: "h".to_string(),
4456            },
4457            lsp::TextEdit {
4458                range: lsp::Range::new(lsp::Position::new(0, 7), lsp::Position::new(0, 7)),
4459                new_text: "y".to_string(),
4460            },
4461        ]))
4462    });
4463
4464    project_b
4465        .update(cx_b, |project, cx| {
4466            project.format(
4467                HashSet::from_iter([buffer_b.clone()]),
4468                LspFormatTarget::Buffers,
4469                true,
4470                FormatTrigger::Save,
4471                cx,
4472            )
4473        })
4474        .await
4475        .unwrap();
4476
4477    // The edits from the LSP are applied, and a final newline is added.
4478    assert_eq!(
4479        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4480        "let honey = \"two\"\n"
4481    );
4482
4483    // Ensure buffer can be formatted using an external command. Notice how the
4484    // host's configuration is honored as opposed to using the guest's settings.
4485    cx_a.update(|cx| {
4486        SettingsStore::update_global(cx, |store, cx| {
4487            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4488                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4489                    vec![Formatter::External {
4490                        command: "awk".into(),
4491                        arguments: Some(vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into()),
4492                    }]
4493                    .into(),
4494                )));
4495            });
4496        });
4497    });
4498
4499    executor.allow_parking();
4500    project_b
4501        .update(cx_b, |project, cx| {
4502            project.format(
4503                HashSet::from_iter([buffer_b.clone()]),
4504                LspFormatTarget::Buffers,
4505                true,
4506                FormatTrigger::Save,
4507                cx,
4508            )
4509        })
4510        .await
4511        .unwrap();
4512    assert_eq!(
4513        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4514        format!("let honey = \"{}/a.rs\"\n", directory.to_str().unwrap())
4515    );
4516}
4517
4518#[gpui::test(iterations = 10)]
4519async fn test_prettier_formatting_buffer(
4520    executor: BackgroundExecutor,
4521    cx_a: &mut TestAppContext,
4522    cx_b: &mut TestAppContext,
4523) {
4524    let mut server = TestServer::start(executor.clone()).await;
4525    let client_a = server.create_client(cx_a, "user_a").await;
4526    let client_b = server.create_client(cx_b, "user_b").await;
4527    server
4528        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4529        .await;
4530    let active_call_a = cx_a.read(ActiveCall::global);
4531
4532    let test_plugin = "test_plugin";
4533
4534    client_a.language_registry().add(Arc::new(Language::new(
4535        LanguageConfig {
4536            name: "TypeScript".into(),
4537            matcher: LanguageMatcher {
4538                path_suffixes: vec!["ts".to_string()],
4539                ..Default::default()
4540            },
4541            ..Default::default()
4542        },
4543        Some(tree_sitter_typescript::LANGUAGE_TYPESCRIPT.into()),
4544    )));
4545    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4546        "TypeScript",
4547        FakeLspAdapter {
4548            prettier_plugins: vec![test_plugin],
4549            ..Default::default()
4550        },
4551    );
4552
4553    // Here we insert a fake tree with a directory that exists on disk. This is needed
4554    // because later we'll invoke a command, which requires passing a working directory
4555    // that points to a valid location on disk.
4556    let directory = env::current_dir().unwrap();
4557    let buffer_text = "let one = \"two\"";
4558    client_a
4559        .fs()
4560        .insert_tree(&directory, json!({ "a.ts": buffer_text }))
4561        .await;
4562    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4563    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
4564    let open_buffer = project_a.update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.ts"), cx));
4565    let buffer_a = cx_a.executor().spawn(open_buffer).await.unwrap();
4566
4567    let project_id = active_call_a
4568        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4569        .await
4570        .unwrap();
4571    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4572    let (buffer_b, _) = project_b
4573        .update(cx_b, |p, cx| {
4574            p.open_buffer_with_lsp((worktree_id, "a.ts"), cx)
4575        })
4576        .await
4577        .unwrap();
4578
4579    cx_a.update(|cx| {
4580        SettingsStore::update_global(cx, |store, cx| {
4581            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4582                file.defaults.formatter = Some(SelectedFormatter::Auto);
4583                file.defaults.prettier = Some(PrettierSettings {
4584                    allowed: true,
4585                    ..PrettierSettings::default()
4586                });
4587            });
4588        });
4589    });
4590    cx_b.update(|cx| {
4591        SettingsStore::update_global(cx, |store, cx| {
4592            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4593                file.defaults.formatter = Some(SelectedFormatter::List(FormatterList(
4594                    vec![Formatter::LanguageServer { name: None }].into(),
4595                )));
4596                file.defaults.prettier = Some(PrettierSettings {
4597                    allowed: true,
4598                    ..PrettierSettings::default()
4599                });
4600            });
4601        });
4602    });
4603    let fake_language_server = fake_language_servers.next().await.unwrap();
4604    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4605        panic!(
4606            "Unexpected: prettier should be preferred since it's enabled and language supports it"
4607        )
4608    });
4609
4610    project_b
4611        .update(cx_b, |project, cx| {
4612            project.format(
4613                HashSet::from_iter([buffer_b.clone()]),
4614                LspFormatTarget::Buffers,
4615                true,
4616                FormatTrigger::Save,
4617                cx,
4618            )
4619        })
4620        .await
4621        .unwrap();
4622
4623    executor.run_until_parked();
4624    assert_eq!(
4625        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4626        buffer_text.to_string() + "\n" + prettier_format_suffix,
4627        "Prettier formatting was not applied to client buffer after client's request"
4628    );
4629
4630    project_a
4631        .update(cx_a, |project, cx| {
4632            project.format(
4633                HashSet::from_iter([buffer_a.clone()]),
4634                LspFormatTarget::Buffers,
4635                true,
4636                FormatTrigger::Manual,
4637                cx,
4638            )
4639        })
4640        .await
4641        .unwrap();
4642
4643    executor.run_until_parked();
4644    assert_eq!(
4645        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4646        buffer_text.to_string() + "\n" + prettier_format_suffix + "\n" + prettier_format_suffix,
4647        "Prettier formatting was not applied to client buffer after host's request"
4648    );
4649}
4650
4651#[gpui::test(iterations = 10)]
4652async fn test_definition(
4653    executor: BackgroundExecutor,
4654    cx_a: &mut TestAppContext,
4655    cx_b: &mut TestAppContext,
4656) {
4657    let mut server = TestServer::start(executor.clone()).await;
4658    let client_a = server.create_client(cx_a, "user_a").await;
4659    let client_b = server.create_client(cx_b, "user_b").await;
4660    server
4661        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4662        .await;
4663    let active_call_a = cx_a.read(ActiveCall::global);
4664
4665    let mut fake_language_servers = client_a
4666        .language_registry()
4667        .register_fake_lsp("Rust", Default::default());
4668    client_a.language_registry().add(rust_lang());
4669
4670    client_a
4671        .fs()
4672        .insert_tree(
4673            "/root",
4674            json!({
4675                "dir-1": {
4676                    "a.rs": "const ONE: usize = b::TWO + b::THREE;",
4677                },
4678                "dir-2": {
4679                    "b.rs": "const TWO: c::T2 = 2;\nconst THREE: usize = 3;",
4680                    "c.rs": "type T2 = usize;",
4681                }
4682            }),
4683        )
4684        .await;
4685    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4686    let project_id = active_call_a
4687        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4688        .await
4689        .unwrap();
4690    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4691
4692    // Open the file on client B.
4693    let (buffer_b, _handle) = project_b
4694        .update(cx_b, |p, cx| {
4695            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
4696        })
4697        .await
4698        .unwrap();
4699
4700    // Request the definition of a symbol as the guest.
4701    let fake_language_server = fake_language_servers.next().await.unwrap();
4702    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4703        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4704            lsp::Location::new(
4705                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4706                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
4707            ),
4708        )))
4709    });
4710
4711    let definitions_1 = project_b
4712        .update(cx_b, |p, cx| p.definition(&buffer_b, 23, cx))
4713        .await
4714        .unwrap();
4715    cx_b.read(|cx| {
4716        assert_eq!(definitions_1.len(), 1);
4717        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4718        let target_buffer = definitions_1[0].target.buffer.read(cx);
4719        assert_eq!(
4720            target_buffer.text(),
4721            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4722        );
4723        assert_eq!(
4724            definitions_1[0].target.range.to_point(target_buffer),
4725            Point::new(0, 6)..Point::new(0, 9)
4726        );
4727    });
4728
4729    // Try getting more definitions for the same buffer, ensuring the buffer gets reused from
4730    // the previous call to `definition`.
4731    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4732        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4733            lsp::Location::new(
4734                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4735                lsp::Range::new(lsp::Position::new(1, 6), lsp::Position::new(1, 11)),
4736            ),
4737        )))
4738    });
4739
4740    let definitions_2 = project_b
4741        .update(cx_b, |p, cx| p.definition(&buffer_b, 33, cx))
4742        .await
4743        .unwrap();
4744    cx_b.read(|cx| {
4745        assert_eq!(definitions_2.len(), 1);
4746        assert_eq!(project_b.read(cx).worktrees(cx).count(), 2);
4747        let target_buffer = definitions_2[0].target.buffer.read(cx);
4748        assert_eq!(
4749            target_buffer.text(),
4750            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4751        );
4752        assert_eq!(
4753            definitions_2[0].target.range.to_point(target_buffer),
4754            Point::new(1, 6)..Point::new(1, 11)
4755        );
4756    });
4757    assert_eq!(
4758        definitions_1[0].target.buffer,
4759        definitions_2[0].target.buffer
4760    );
4761
4762    fake_language_server.handle_request::<lsp::request::GotoTypeDefinition, _, _>(
4763        |req, _| async move {
4764            assert_eq!(
4765                req.text_document_position_params.position,
4766                lsp::Position::new(0, 7)
4767            );
4768            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4769                lsp::Location::new(
4770                    lsp::Url::from_file_path("/root/dir-2/c.rs").unwrap(),
4771                    lsp::Range::new(lsp::Position::new(0, 5), lsp::Position::new(0, 7)),
4772                ),
4773            )))
4774        },
4775    );
4776
4777    let type_definitions = project_b
4778        .update(cx_b, |p, cx| p.type_definition(&buffer_b, 7, cx))
4779        .await
4780        .unwrap();
4781    cx_b.read(|cx| {
4782        assert_eq!(type_definitions.len(), 1);
4783        let target_buffer = type_definitions[0].target.buffer.read(cx);
4784        assert_eq!(target_buffer.text(), "type T2 = usize;");
4785        assert_eq!(
4786            type_definitions[0].target.range.to_point(target_buffer),
4787            Point::new(0, 5)..Point::new(0, 7)
4788        );
4789    });
4790}
4791
4792#[gpui::test(iterations = 10)]
4793async fn test_references(
4794    executor: BackgroundExecutor,
4795    cx_a: &mut TestAppContext,
4796    cx_b: &mut TestAppContext,
4797) {
4798    let mut server = TestServer::start(executor.clone()).await;
4799    let client_a = server.create_client(cx_a, "user_a").await;
4800    let client_b = server.create_client(cx_b, "user_b").await;
4801    server
4802        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4803        .await;
4804    let active_call_a = cx_a.read(ActiveCall::global);
4805
4806    client_a.language_registry().add(rust_lang());
4807    let mut fake_language_servers = client_a.language_registry().register_fake_lsp(
4808        "Rust",
4809        FakeLspAdapter {
4810            name: "my-fake-lsp-adapter",
4811            capabilities: lsp::ServerCapabilities {
4812                references_provider: Some(lsp::OneOf::Left(true)),
4813                ..Default::default()
4814            },
4815            ..Default::default()
4816        },
4817    );
4818
4819    client_a
4820        .fs()
4821        .insert_tree(
4822            "/root",
4823            json!({
4824                "dir-1": {
4825                    "one.rs": "const ONE: usize = 1;",
4826                    "two.rs": "const TWO: usize = one::ONE + one::ONE;",
4827                },
4828                "dir-2": {
4829                    "three.rs": "const THREE: usize = two::TWO + one::ONE;",
4830                }
4831            }),
4832        )
4833        .await;
4834    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4835    let project_id = active_call_a
4836        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4837        .await
4838        .unwrap();
4839    let project_b = client_b.join_remote_project(project_id, cx_b).await;
4840
4841    // Open the file on client B.
4842    let (buffer_b, _handle) = project_b
4843        .update(cx_b, |p, cx| {
4844            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
4845        })
4846        .await
4847        .unwrap();
4848
4849    // Request references to a symbol as the guest.
4850    let fake_language_server = fake_language_servers.next().await.unwrap();
4851    let (lsp_response_tx, rx) = mpsc::unbounded::<Result<Option<Vec<lsp::Location>>>>();
4852    fake_language_server.handle_request::<lsp::request::References, _, _>({
4853        let rx = Arc::new(Mutex::new(Some(rx)));
4854        move |params, _| {
4855            assert_eq!(
4856                params.text_document_position.text_document.uri.as_str(),
4857                "file:///root/dir-1/one.rs"
4858            );
4859            let rx = rx.clone();
4860            async move {
4861                let mut response_rx = rx.lock().take().unwrap();
4862                let result = response_rx.next().await.unwrap();
4863                *rx.lock() = Some(response_rx);
4864                result
4865            }
4866        }
4867    });
4868
4869    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4870
4871    // User is informed that a request is pending.
4872    executor.run_until_parked();
4873    project_b.read_with(cx_b, |project, cx| {
4874        let status = project.language_server_statuses(cx).next().unwrap().1;
4875        assert_eq!(status.name, "my-fake-lsp-adapter");
4876        assert_eq!(
4877            status.pending_work.values().next().unwrap().message,
4878            Some("Finding references...".into())
4879        );
4880    });
4881
4882    // Cause the language server to respond.
4883    lsp_response_tx
4884        .unbounded_send(Ok(Some(vec![
4885            lsp::Location {
4886                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4887                range: lsp::Range::new(lsp::Position::new(0, 24), lsp::Position::new(0, 27)),
4888            },
4889            lsp::Location {
4890                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4891                range: lsp::Range::new(lsp::Position::new(0, 35), lsp::Position::new(0, 38)),
4892            },
4893            lsp::Location {
4894                uri: lsp::Url::from_file_path("/root/dir-2/three.rs").unwrap(),
4895                range: lsp::Range::new(lsp::Position::new(0, 37), lsp::Position::new(0, 40)),
4896            },
4897        ])))
4898        .unwrap();
4899
4900    let references = references.await.unwrap();
4901    executor.run_until_parked();
4902    project_b.read_with(cx_b, |project, cx| {
4903        // User is informed that a request is no longer pending.
4904        let status = project.language_server_statuses(cx).next().unwrap().1;
4905        assert!(status.pending_work.is_empty());
4906
4907        assert_eq!(references.len(), 3);
4908        assert_eq!(project.worktrees(cx).count(), 2);
4909
4910        let two_buffer = references[0].buffer.read(cx);
4911        let three_buffer = references[2].buffer.read(cx);
4912        assert_eq!(
4913            two_buffer.file().unwrap().path().as_ref(),
4914            Path::new("two.rs")
4915        );
4916        assert_eq!(references[1].buffer, references[0].buffer);
4917        assert_eq!(
4918            three_buffer.file().unwrap().full_path(cx),
4919            Path::new("/root/dir-2/three.rs")
4920        );
4921
4922        assert_eq!(references[0].range.to_offset(two_buffer), 24..27);
4923        assert_eq!(references[1].range.to_offset(two_buffer), 35..38);
4924        assert_eq!(references[2].range.to_offset(three_buffer), 37..40);
4925    });
4926
4927    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4928
4929    // User is informed that a request is pending.
4930    executor.run_until_parked();
4931    project_b.read_with(cx_b, |project, cx| {
4932        let status = project.language_server_statuses(cx).next().unwrap().1;
4933        assert_eq!(status.name, "my-fake-lsp-adapter");
4934        assert_eq!(
4935            status.pending_work.values().next().unwrap().message,
4936            Some("Finding references...".into())
4937        );
4938    });
4939
4940    // Cause the LSP request to fail.
4941    lsp_response_tx
4942        .unbounded_send(Err(anyhow!("can't find references")))
4943        .unwrap();
4944    references.await.unwrap_err();
4945
4946    // User is informed that the request is no longer pending.
4947    executor.run_until_parked();
4948    project_b.read_with(cx_b, |project, cx| {
4949        let status = project.language_server_statuses(cx).next().unwrap().1;
4950        assert!(status.pending_work.is_empty());
4951    });
4952}
4953
4954#[gpui::test(iterations = 10)]
4955async fn test_project_search(
4956    executor: BackgroundExecutor,
4957    cx_a: &mut TestAppContext,
4958    cx_b: &mut TestAppContext,
4959) {
4960    let mut server = TestServer::start(executor.clone()).await;
4961    let client_a = server.create_client(cx_a, "user_a").await;
4962    let client_b = server.create_client(cx_b, "user_b").await;
4963    server
4964        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4965        .await;
4966    let active_call_a = cx_a.read(ActiveCall::global);
4967
4968    client_a
4969        .fs()
4970        .insert_tree(
4971            "/root",
4972            json!({
4973                "dir-1": {
4974                    "a": "hello world",
4975                    "b": "goodnight moon",
4976                    "c": "a world of goo",
4977                    "d": "world champion of clown world",
4978                },
4979                "dir-2": {
4980                    "e": "disney world is fun",
4981                }
4982            }),
4983        )
4984        .await;
4985    let (project_a, _) = client_a.build_local_project("/root/dir-1", cx_a).await;
4986    let (worktree_2, _) = project_a
4987        .update(cx_a, |p, cx| {
4988            p.find_or_create_worktree("/root/dir-2", true, cx)
4989        })
4990        .await
4991        .unwrap();
4992    worktree_2
4993        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
4994        .await;
4995    let project_id = active_call_a
4996        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4997        .await
4998        .unwrap();
4999
5000    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5001
5002    // Perform a search as the guest.
5003    let mut results = HashMap::default();
5004    let search_rx = project_b.update(cx_b, |project, cx| {
5005        project.search(
5006            SearchQuery::text(
5007                "world",
5008                false,
5009                false,
5010                false,
5011                Default::default(),
5012                Default::default(),
5013                None,
5014            )
5015            .unwrap(),
5016            cx,
5017        )
5018    });
5019    while let Ok(result) = search_rx.recv().await {
5020        match result {
5021            SearchResult::Buffer { buffer, ranges } => {
5022                results.entry(buffer).or_insert(ranges);
5023            }
5024            SearchResult::LimitReached => {
5025                panic!("Unexpectedly reached search limit in tests. If you do want to assert limit-reached, change this panic call.")
5026            }
5027        };
5028    }
5029
5030    let mut ranges_by_path = results
5031        .into_iter()
5032        .map(|(buffer, ranges)| {
5033            buffer.read_with(cx_b, |buffer, cx| {
5034                let path = buffer.file().unwrap().full_path(cx);
5035                let offset_ranges = ranges
5036                    .into_iter()
5037                    .map(|range| range.to_offset(buffer))
5038                    .collect::<Vec<_>>();
5039                (path, offset_ranges)
5040            })
5041        })
5042        .collect::<Vec<_>>();
5043    ranges_by_path.sort_by_key(|(path, _)| path.clone());
5044
5045    assert_eq!(
5046        ranges_by_path,
5047        &[
5048            (PathBuf::from("dir-1/a"), vec![6..11]),
5049            (PathBuf::from("dir-1/c"), vec![2..7]),
5050            (PathBuf::from("dir-1/d"), vec![0..5, 24..29]),
5051            (PathBuf::from("dir-2/e"), vec![7..12]),
5052        ]
5053    );
5054}
5055
5056#[gpui::test(iterations = 10)]
5057async fn test_document_highlights(
5058    executor: BackgroundExecutor,
5059    cx_a: &mut TestAppContext,
5060    cx_b: &mut TestAppContext,
5061) {
5062    let mut server = TestServer::start(executor.clone()).await;
5063    let client_a = server.create_client(cx_a, "user_a").await;
5064    let client_b = server.create_client(cx_b, "user_b").await;
5065    server
5066        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5067        .await;
5068    let active_call_a = cx_a.read(ActiveCall::global);
5069
5070    client_a
5071        .fs()
5072        .insert_tree(
5073            "/root-1",
5074            json!({
5075                "main.rs": "fn double(number: i32) -> i32 { number + number }",
5076            }),
5077        )
5078        .await;
5079
5080    let mut fake_language_servers = client_a
5081        .language_registry()
5082        .register_fake_lsp("Rust", Default::default());
5083    client_a.language_registry().add(rust_lang());
5084
5085    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5086    let project_id = active_call_a
5087        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5088        .await
5089        .unwrap();
5090    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5091
5092    // Open the file on client B.
5093    let (buffer_b, _handle) = project_b
5094        .update(cx_b, |p, cx| {
5095            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5096        })
5097        .await
5098        .unwrap();
5099
5100    // Request document highlights as the guest.
5101    let fake_language_server = fake_language_servers.next().await.unwrap();
5102    fake_language_server.handle_request::<lsp::request::DocumentHighlightRequest, _, _>(
5103        |params, _| async move {
5104            assert_eq!(
5105                params
5106                    .text_document_position_params
5107                    .text_document
5108                    .uri
5109                    .as_str(),
5110                "file:///root-1/main.rs"
5111            );
5112            assert_eq!(
5113                params.text_document_position_params.position,
5114                lsp::Position::new(0, 34)
5115            );
5116            Ok(Some(vec![
5117                lsp::DocumentHighlight {
5118                    kind: Some(lsp::DocumentHighlightKind::WRITE),
5119                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 16)),
5120                },
5121                lsp::DocumentHighlight {
5122                    kind: Some(lsp::DocumentHighlightKind::READ),
5123                    range: lsp::Range::new(lsp::Position::new(0, 32), lsp::Position::new(0, 38)),
5124                },
5125                lsp::DocumentHighlight {
5126                    kind: Some(lsp::DocumentHighlightKind::READ),
5127                    range: lsp::Range::new(lsp::Position::new(0, 41), lsp::Position::new(0, 47)),
5128                },
5129            ]))
5130        },
5131    );
5132
5133    let highlights = project_b
5134        .update(cx_b, |p, cx| p.document_highlights(&buffer_b, 34, cx))
5135        .await
5136        .unwrap();
5137
5138    buffer_b.read_with(cx_b, |buffer, _| {
5139        let snapshot = buffer.snapshot();
5140
5141        let highlights = highlights
5142            .into_iter()
5143            .map(|highlight| (highlight.kind, highlight.range.to_offset(&snapshot)))
5144            .collect::<Vec<_>>();
5145        assert_eq!(
5146            highlights,
5147            &[
5148                (lsp::DocumentHighlightKind::WRITE, 10..16),
5149                (lsp::DocumentHighlightKind::READ, 32..38),
5150                (lsp::DocumentHighlightKind::READ, 41..47)
5151            ]
5152        )
5153    });
5154}
5155
5156#[gpui::test(iterations = 10)]
5157async fn test_lsp_hover(
5158    executor: BackgroundExecutor,
5159    cx_a: &mut TestAppContext,
5160    cx_b: &mut TestAppContext,
5161) {
5162    let mut server = TestServer::start(executor.clone()).await;
5163    let client_a = server.create_client(cx_a, "user_a").await;
5164    let client_b = server.create_client(cx_b, "user_b").await;
5165    server
5166        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5167        .await;
5168    let active_call_a = cx_a.read(ActiveCall::global);
5169
5170    client_a
5171        .fs()
5172        .insert_tree(
5173            "/root-1",
5174            json!({
5175                "main.rs": "use std::collections::HashMap;",
5176            }),
5177        )
5178        .await;
5179
5180    client_a.language_registry().add(rust_lang());
5181    let language_server_names = ["rust-analyzer", "CrabLang-ls"];
5182    let mut language_servers = [
5183        client_a.language_registry().register_fake_lsp(
5184            "Rust",
5185            FakeLspAdapter {
5186                name: "rust-analyzer",
5187                capabilities: lsp::ServerCapabilities {
5188                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5189                    ..lsp::ServerCapabilities::default()
5190                },
5191                ..FakeLspAdapter::default()
5192            },
5193        ),
5194        client_a.language_registry().register_fake_lsp(
5195            "Rust",
5196            FakeLspAdapter {
5197                name: "CrabLang-ls",
5198                capabilities: lsp::ServerCapabilities {
5199                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5200                    ..lsp::ServerCapabilities::default()
5201                },
5202                ..FakeLspAdapter::default()
5203            },
5204        ),
5205    ];
5206
5207    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5208    let project_id = active_call_a
5209        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5210        .await
5211        .unwrap();
5212    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5213
5214    // Open the file as the guest
5215    let (buffer_b, _handle) = project_b
5216        .update(cx_b, |p, cx| {
5217            p.open_buffer_with_lsp((worktree_id, "main.rs"), cx)
5218        })
5219        .await
5220        .unwrap();
5221
5222    let mut servers_with_hover_requests = HashMap::default();
5223    for i in 0..language_server_names.len() {
5224        let new_server = language_servers[i].next().await.unwrap_or_else(|| {
5225            panic!(
5226                "Failed to get language server #{i} with name {}",
5227                &language_server_names[i]
5228            )
5229        });
5230        let new_server_name = new_server.server.name();
5231        assert!(
5232            !servers_with_hover_requests.contains_key(&new_server_name),
5233            "Unexpected: initialized server with the same name twice. Name: `{new_server_name}`"
5234        );
5235        match new_server_name.as_ref() {
5236            "CrabLang-ls" => {
5237                servers_with_hover_requests.insert(
5238                    new_server_name.clone(),
5239                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5240                        move |params, _| {
5241                            assert_eq!(
5242                                params
5243                                    .text_document_position_params
5244                                    .text_document
5245                                    .uri
5246                                    .as_str(),
5247                                "file:///root-1/main.rs"
5248                            );
5249                            let name = new_server_name.clone();
5250                            async move {
5251                                Ok(Some(lsp::Hover {
5252                                    contents: lsp::HoverContents::Scalar(
5253                                        lsp::MarkedString::String(format!("{name} hover")),
5254                                    ),
5255                                    range: None,
5256                                }))
5257                            }
5258                        },
5259                    ),
5260                );
5261            }
5262            "rust-analyzer" => {
5263                servers_with_hover_requests.insert(
5264                    new_server_name.clone(),
5265                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5266                        |params, _| async move {
5267                            assert_eq!(
5268                                params
5269                                    .text_document_position_params
5270                                    .text_document
5271                                    .uri
5272                                    .as_str(),
5273                                "file:///root-1/main.rs"
5274                            );
5275                            assert_eq!(
5276                                params.text_document_position_params.position,
5277                                lsp::Position::new(0, 22)
5278                            );
5279                            Ok(Some(lsp::Hover {
5280                                contents: lsp::HoverContents::Array(vec![
5281                                    lsp::MarkedString::String("Test hover content.".to_string()),
5282                                    lsp::MarkedString::LanguageString(lsp::LanguageString {
5283                                        language: "Rust".to_string(),
5284                                        value: "let foo = 42;".to_string(),
5285                                    }),
5286                                ]),
5287                                range: Some(lsp::Range::new(
5288                                    lsp::Position::new(0, 22),
5289                                    lsp::Position::new(0, 29),
5290                                )),
5291                            }))
5292                        },
5293                    ),
5294                );
5295            }
5296            unexpected => panic!("Unexpected server name: {unexpected}"),
5297        }
5298    }
5299
5300    // Request hover information as the guest.
5301    let mut hovers = project_b
5302        .update(cx_b, |p, cx| p.hover(&buffer_b, 22, cx))
5303        .await;
5304    assert_eq!(
5305        hovers.len(),
5306        2,
5307        "Expected two hovers from both language servers, but got: {hovers:?}"
5308    );
5309
5310    let _: Vec<()> = futures::future::join_all(servers_with_hover_requests.into_values().map(
5311        |mut hover_request| async move {
5312            hover_request
5313                .next()
5314                .await
5315                .expect("All hover requests should have been triggered")
5316        },
5317    ))
5318    .await;
5319
5320    hovers.sort_by_key(|hover| hover.contents.len());
5321    let first_hover = hovers.first().cloned().unwrap();
5322    assert_eq!(
5323        first_hover.contents,
5324        vec![project::HoverBlock {
5325            text: "CrabLang-ls hover".to_string(),
5326            kind: HoverBlockKind::Markdown,
5327        },]
5328    );
5329    let second_hover = hovers.last().cloned().unwrap();
5330    assert_eq!(
5331        second_hover.contents,
5332        vec![
5333            project::HoverBlock {
5334                text: "Test hover content.".to_string(),
5335                kind: HoverBlockKind::Markdown,
5336            },
5337            project::HoverBlock {
5338                text: "let foo = 42;".to_string(),
5339                kind: HoverBlockKind::Code {
5340                    language: "Rust".to_string()
5341                },
5342            }
5343        ]
5344    );
5345    buffer_b.read_with(cx_b, |buffer, _| {
5346        let snapshot = buffer.snapshot();
5347        assert_eq!(second_hover.range.unwrap().to_offset(&snapshot), 22..29);
5348    });
5349}
5350
5351#[gpui::test(iterations = 10)]
5352async fn test_project_symbols(
5353    executor: BackgroundExecutor,
5354    cx_a: &mut TestAppContext,
5355    cx_b: &mut TestAppContext,
5356) {
5357    let mut server = TestServer::start(executor.clone()).await;
5358    let client_a = server.create_client(cx_a, "user_a").await;
5359    let client_b = server.create_client(cx_b, "user_b").await;
5360    server
5361        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5362        .await;
5363    let active_call_a = cx_a.read(ActiveCall::global);
5364
5365    client_a.language_registry().add(rust_lang());
5366    let mut fake_language_servers = client_a
5367        .language_registry()
5368        .register_fake_lsp("Rust", Default::default());
5369
5370    client_a
5371        .fs()
5372        .insert_tree(
5373            "/code",
5374            json!({
5375                "crate-1": {
5376                    "one.rs": "const ONE: usize = 1;",
5377                },
5378                "crate-2": {
5379                    "two.rs": "const TWO: usize = 2; const THREE: usize = 3;",
5380                },
5381                "private": {
5382                    "passwords.txt": "the-password",
5383                }
5384            }),
5385        )
5386        .await;
5387    let (project_a, worktree_id) = client_a.build_local_project("/code/crate-1", cx_a).await;
5388    let project_id = active_call_a
5389        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5390        .await
5391        .unwrap();
5392    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5393
5394    // Cause the language server to start.
5395    let _buffer = project_b
5396        .update(cx_b, |p, cx| {
5397            p.open_buffer_with_lsp((worktree_id, "one.rs"), cx)
5398        })
5399        .await
5400        .unwrap();
5401
5402    let fake_language_server = fake_language_servers.next().await.unwrap();
5403    fake_language_server.handle_request::<lsp::WorkspaceSymbolRequest, _, _>(|_, _| async move {
5404        Ok(Some(lsp::WorkspaceSymbolResponse::Flat(vec![
5405            #[allow(deprecated)]
5406            lsp::SymbolInformation {
5407                name: "TWO".into(),
5408                location: lsp::Location {
5409                    uri: lsp::Url::from_file_path("/code/crate-2/two.rs").unwrap(),
5410                    range: lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5411                },
5412                kind: lsp::SymbolKind::CONSTANT,
5413                tags: None,
5414                container_name: None,
5415                deprecated: None,
5416            },
5417        ])))
5418    });
5419
5420    // Request the definition of a symbol as the guest.
5421    let symbols = project_b
5422        .update(cx_b, |p, cx| p.symbols("two", cx))
5423        .await
5424        .unwrap();
5425    assert_eq!(symbols.len(), 1);
5426    assert_eq!(symbols[0].name, "TWO");
5427
5428    // Open one of the returned symbols.
5429    let buffer_b_2 = project_b
5430        .update(cx_b, |project, cx| {
5431            project.open_buffer_for_symbol(&symbols[0], cx)
5432        })
5433        .await
5434        .unwrap();
5435
5436    buffer_b_2.read_with(cx_b, |buffer, cx| {
5437        assert_eq!(
5438            buffer.file().unwrap().full_path(cx),
5439            Path::new("/code/crate-2/two.rs")
5440        );
5441    });
5442
5443    // Attempt to craft a symbol and violate host's privacy by opening an arbitrary file.
5444    let mut fake_symbol = symbols[0].clone();
5445    fake_symbol.path.path = Path::new("/code/secrets").into();
5446    let error = project_b
5447        .update(cx_b, |project, cx| {
5448            project.open_buffer_for_symbol(&fake_symbol, cx)
5449        })
5450        .await
5451        .unwrap_err();
5452    assert!(error.to_string().contains("invalid symbol signature"));
5453}
5454
5455#[gpui::test(iterations = 10)]
5456async fn test_open_buffer_while_getting_definition_pointing_to_it(
5457    executor: BackgroundExecutor,
5458    cx_a: &mut TestAppContext,
5459    cx_b: &mut TestAppContext,
5460    mut rng: StdRng,
5461) {
5462    let mut server = TestServer::start(executor.clone()).await;
5463    let client_a = server.create_client(cx_a, "user_a").await;
5464    let client_b = server.create_client(cx_b, "user_b").await;
5465    server
5466        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5467        .await;
5468    let active_call_a = cx_a.read(ActiveCall::global);
5469
5470    client_a.language_registry().add(rust_lang());
5471    let mut fake_language_servers = client_a
5472        .language_registry()
5473        .register_fake_lsp("Rust", Default::default());
5474
5475    client_a
5476        .fs()
5477        .insert_tree(
5478            "/root",
5479            json!({
5480                "a.rs": "const ONE: usize = b::TWO;",
5481                "b.rs": "const TWO: usize = 2",
5482            }),
5483        )
5484        .await;
5485    let (project_a, worktree_id) = client_a.build_local_project("/root", cx_a).await;
5486    let project_id = active_call_a
5487        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5488        .await
5489        .unwrap();
5490    let project_b = client_b.join_remote_project(project_id, cx_b).await;
5491
5492    let (buffer_b1, _lsp) = project_b
5493        .update(cx_b, |p, cx| {
5494            p.open_buffer_with_lsp((worktree_id, "a.rs"), cx)
5495        })
5496        .await
5497        .unwrap();
5498
5499    let fake_language_server = fake_language_servers.next().await.unwrap();
5500    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
5501        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
5502            lsp::Location::new(
5503                lsp::Url::from_file_path("/root/b.rs").unwrap(),
5504                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5505            ),
5506        )))
5507    });
5508
5509    let definitions;
5510    let buffer_b2;
5511    if rng.gen() {
5512        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5513        (buffer_b2, _) = project_b
5514            .update(cx_b, |p, cx| {
5515                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5516            })
5517            .await
5518            .unwrap();
5519    } else {
5520        (buffer_b2, _) = project_b
5521            .update(cx_b, |p, cx| {
5522                p.open_buffer_with_lsp((worktree_id, "b.rs"), cx)
5523            })
5524            .await
5525            .unwrap();
5526        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5527    }
5528
5529    let definitions = definitions.await.unwrap();
5530    assert_eq!(definitions.len(), 1);
5531    assert_eq!(definitions[0].target.buffer, buffer_b2);
5532}
5533
5534#[gpui::test(iterations = 10)]
5535async fn test_contacts(
5536    executor: BackgroundExecutor,
5537    cx_a: &mut TestAppContext,
5538    cx_b: &mut TestAppContext,
5539    cx_c: &mut TestAppContext,
5540    cx_d: &mut TestAppContext,
5541) {
5542    let mut server = TestServer::start(executor.clone()).await;
5543    let client_a = server.create_client(cx_a, "user_a").await;
5544    let client_b = server.create_client(cx_b, "user_b").await;
5545    let client_c = server.create_client(cx_c, "user_c").await;
5546    let client_d = server.create_client(cx_d, "user_d").await;
5547    server
5548        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
5549        .await;
5550    let active_call_a = cx_a.read(ActiveCall::global);
5551    let active_call_b = cx_b.read(ActiveCall::global);
5552    let active_call_c = cx_c.read(ActiveCall::global);
5553    let _active_call_d = cx_d.read(ActiveCall::global);
5554
5555    executor.run_until_parked();
5556    assert_eq!(
5557        contacts(&client_a, cx_a),
5558        [
5559            ("user_b".to_string(), "online", "free"),
5560            ("user_c".to_string(), "online", "free")
5561        ]
5562    );
5563    assert_eq!(
5564        contacts(&client_b, cx_b),
5565        [
5566            ("user_a".to_string(), "online", "free"),
5567            ("user_c".to_string(), "online", "free")
5568        ]
5569    );
5570    assert_eq!(
5571        contacts(&client_c, cx_c),
5572        [
5573            ("user_a".to_string(), "online", "free"),
5574            ("user_b".to_string(), "online", "free")
5575        ]
5576    );
5577    assert_eq!(contacts(&client_d, cx_d), []);
5578
5579    server.disconnect_client(client_c.peer_id().unwrap());
5580    server.forbid_connections();
5581    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5582    assert_eq!(
5583        contacts(&client_a, cx_a),
5584        [
5585            ("user_b".to_string(), "online", "free"),
5586            ("user_c".to_string(), "offline", "free")
5587        ]
5588    );
5589    assert_eq!(
5590        contacts(&client_b, cx_b),
5591        [
5592            ("user_a".to_string(), "online", "free"),
5593            ("user_c".to_string(), "offline", "free")
5594        ]
5595    );
5596    assert_eq!(contacts(&client_c, cx_c), []);
5597    assert_eq!(contacts(&client_d, cx_d), []);
5598
5599    server.allow_connections();
5600    client_c
5601        .authenticate_and_connect(false, &cx_c.to_async())
5602        .await
5603        .unwrap();
5604
5605    executor.run_until_parked();
5606    assert_eq!(
5607        contacts(&client_a, cx_a),
5608        [
5609            ("user_b".to_string(), "online", "free"),
5610            ("user_c".to_string(), "online", "free")
5611        ]
5612    );
5613    assert_eq!(
5614        contacts(&client_b, cx_b),
5615        [
5616            ("user_a".to_string(), "online", "free"),
5617            ("user_c".to_string(), "online", "free")
5618        ]
5619    );
5620    assert_eq!(
5621        contacts(&client_c, cx_c),
5622        [
5623            ("user_a".to_string(), "online", "free"),
5624            ("user_b".to_string(), "online", "free")
5625        ]
5626    );
5627    assert_eq!(contacts(&client_d, cx_d), []);
5628
5629    active_call_a
5630        .update(cx_a, |call, cx| {
5631            call.invite(client_b.user_id().unwrap(), None, cx)
5632        })
5633        .await
5634        .unwrap();
5635    executor.run_until_parked();
5636    assert_eq!(
5637        contacts(&client_a, cx_a),
5638        [
5639            ("user_b".to_string(), "online", "busy"),
5640            ("user_c".to_string(), "online", "free")
5641        ]
5642    );
5643    assert_eq!(
5644        contacts(&client_b, cx_b),
5645        [
5646            ("user_a".to_string(), "online", "busy"),
5647            ("user_c".to_string(), "online", "free")
5648        ]
5649    );
5650    assert_eq!(
5651        contacts(&client_c, cx_c),
5652        [
5653            ("user_a".to_string(), "online", "busy"),
5654            ("user_b".to_string(), "online", "busy")
5655        ]
5656    );
5657    assert_eq!(contacts(&client_d, cx_d), []);
5658
5659    // Client B and client D become contacts while client B is being called.
5660    server
5661        .make_contacts(&mut [(&client_b, cx_b), (&client_d, cx_d)])
5662        .await;
5663    executor.run_until_parked();
5664    assert_eq!(
5665        contacts(&client_a, cx_a),
5666        [
5667            ("user_b".to_string(), "online", "busy"),
5668            ("user_c".to_string(), "online", "free")
5669        ]
5670    );
5671    assert_eq!(
5672        contacts(&client_b, cx_b),
5673        [
5674            ("user_a".to_string(), "online", "busy"),
5675            ("user_c".to_string(), "online", "free"),
5676            ("user_d".to_string(), "online", "free"),
5677        ]
5678    );
5679    assert_eq!(
5680        contacts(&client_c, cx_c),
5681        [
5682            ("user_a".to_string(), "online", "busy"),
5683            ("user_b".to_string(), "online", "busy")
5684        ]
5685    );
5686    assert_eq!(
5687        contacts(&client_d, cx_d),
5688        [("user_b".to_string(), "online", "busy")]
5689    );
5690
5691    active_call_b.update(cx_b, |call, cx| call.decline_incoming(cx).unwrap());
5692    executor.run_until_parked();
5693    assert_eq!(
5694        contacts(&client_a, cx_a),
5695        [
5696            ("user_b".to_string(), "online", "free"),
5697            ("user_c".to_string(), "online", "free")
5698        ]
5699    );
5700    assert_eq!(
5701        contacts(&client_b, cx_b),
5702        [
5703            ("user_a".to_string(), "online", "free"),
5704            ("user_c".to_string(), "online", "free"),
5705            ("user_d".to_string(), "online", "free")
5706        ]
5707    );
5708    assert_eq!(
5709        contacts(&client_c, cx_c),
5710        [
5711            ("user_a".to_string(), "online", "free"),
5712            ("user_b".to_string(), "online", "free")
5713        ]
5714    );
5715    assert_eq!(
5716        contacts(&client_d, cx_d),
5717        [("user_b".to_string(), "online", "free")]
5718    );
5719
5720    active_call_c
5721        .update(cx_c, |call, cx| {
5722            call.invite(client_a.user_id().unwrap(), None, cx)
5723        })
5724        .await
5725        .unwrap();
5726    executor.run_until_parked();
5727    assert_eq!(
5728        contacts(&client_a, cx_a),
5729        [
5730            ("user_b".to_string(), "online", "free"),
5731            ("user_c".to_string(), "online", "busy")
5732        ]
5733    );
5734    assert_eq!(
5735        contacts(&client_b, cx_b),
5736        [
5737            ("user_a".to_string(), "online", "busy"),
5738            ("user_c".to_string(), "online", "busy"),
5739            ("user_d".to_string(), "online", "free")
5740        ]
5741    );
5742    assert_eq!(
5743        contacts(&client_c, cx_c),
5744        [
5745            ("user_a".to_string(), "online", "busy"),
5746            ("user_b".to_string(), "online", "free")
5747        ]
5748    );
5749    assert_eq!(
5750        contacts(&client_d, cx_d),
5751        [("user_b".to_string(), "online", "free")]
5752    );
5753
5754    active_call_a
5755        .update(cx_a, |call, cx| call.accept_incoming(cx))
5756        .await
5757        .unwrap();
5758    executor.run_until_parked();
5759    assert_eq!(
5760        contacts(&client_a, cx_a),
5761        [
5762            ("user_b".to_string(), "online", "free"),
5763            ("user_c".to_string(), "online", "busy")
5764        ]
5765    );
5766    assert_eq!(
5767        contacts(&client_b, cx_b),
5768        [
5769            ("user_a".to_string(), "online", "busy"),
5770            ("user_c".to_string(), "online", "busy"),
5771            ("user_d".to_string(), "online", "free")
5772        ]
5773    );
5774    assert_eq!(
5775        contacts(&client_c, cx_c),
5776        [
5777            ("user_a".to_string(), "online", "busy"),
5778            ("user_b".to_string(), "online", "free")
5779        ]
5780    );
5781    assert_eq!(
5782        contacts(&client_d, cx_d),
5783        [("user_b".to_string(), "online", "free")]
5784    );
5785
5786    active_call_a
5787        .update(cx_a, |call, cx| {
5788            call.invite(client_b.user_id().unwrap(), None, cx)
5789        })
5790        .await
5791        .unwrap();
5792    executor.run_until_parked();
5793    assert_eq!(
5794        contacts(&client_a, cx_a),
5795        [
5796            ("user_b".to_string(), "online", "busy"),
5797            ("user_c".to_string(), "online", "busy")
5798        ]
5799    );
5800    assert_eq!(
5801        contacts(&client_b, cx_b),
5802        [
5803            ("user_a".to_string(), "online", "busy"),
5804            ("user_c".to_string(), "online", "busy"),
5805            ("user_d".to_string(), "online", "free")
5806        ]
5807    );
5808    assert_eq!(
5809        contacts(&client_c, cx_c),
5810        [
5811            ("user_a".to_string(), "online", "busy"),
5812            ("user_b".to_string(), "online", "busy")
5813        ]
5814    );
5815    assert_eq!(
5816        contacts(&client_d, cx_d),
5817        [("user_b".to_string(), "online", "busy")]
5818    );
5819
5820    active_call_a
5821        .update(cx_a, |call, cx| call.hang_up(cx))
5822        .await
5823        .unwrap();
5824    executor.run_until_parked();
5825    assert_eq!(
5826        contacts(&client_a, cx_a),
5827        [
5828            ("user_b".to_string(), "online", "free"),
5829            ("user_c".to_string(), "online", "free")
5830        ]
5831    );
5832    assert_eq!(
5833        contacts(&client_b, cx_b),
5834        [
5835            ("user_a".to_string(), "online", "free"),
5836            ("user_c".to_string(), "online", "free"),
5837            ("user_d".to_string(), "online", "free")
5838        ]
5839    );
5840    assert_eq!(
5841        contacts(&client_c, cx_c),
5842        [
5843            ("user_a".to_string(), "online", "free"),
5844            ("user_b".to_string(), "online", "free")
5845        ]
5846    );
5847    assert_eq!(
5848        contacts(&client_d, cx_d),
5849        [("user_b".to_string(), "online", "free")]
5850    );
5851
5852    active_call_a
5853        .update(cx_a, |call, cx| {
5854            call.invite(client_b.user_id().unwrap(), None, cx)
5855        })
5856        .await
5857        .unwrap();
5858    executor.run_until_parked();
5859    assert_eq!(
5860        contacts(&client_a, cx_a),
5861        [
5862            ("user_b".to_string(), "online", "busy"),
5863            ("user_c".to_string(), "online", "free")
5864        ]
5865    );
5866    assert_eq!(
5867        contacts(&client_b, cx_b),
5868        [
5869            ("user_a".to_string(), "online", "busy"),
5870            ("user_c".to_string(), "online", "free"),
5871            ("user_d".to_string(), "online", "free")
5872        ]
5873    );
5874    assert_eq!(
5875        contacts(&client_c, cx_c),
5876        [
5877            ("user_a".to_string(), "online", "busy"),
5878            ("user_b".to_string(), "online", "busy")
5879        ]
5880    );
5881    assert_eq!(
5882        contacts(&client_d, cx_d),
5883        [("user_b".to_string(), "online", "busy")]
5884    );
5885
5886    server.forbid_connections();
5887    server.disconnect_client(client_a.peer_id().unwrap());
5888    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5889    assert_eq!(contacts(&client_a, cx_a), []);
5890    assert_eq!(
5891        contacts(&client_b, cx_b),
5892        [
5893            ("user_a".to_string(), "offline", "free"),
5894            ("user_c".to_string(), "online", "free"),
5895            ("user_d".to_string(), "online", "free")
5896        ]
5897    );
5898    assert_eq!(
5899        contacts(&client_c, cx_c),
5900        [
5901            ("user_a".to_string(), "offline", "free"),
5902            ("user_b".to_string(), "online", "free")
5903        ]
5904    );
5905    assert_eq!(
5906        contacts(&client_d, cx_d),
5907        [("user_b".to_string(), "online", "free")]
5908    );
5909
5910    // Test removing a contact
5911    client_b
5912        .user_store()
5913        .update(cx_b, |store, cx| {
5914            store.remove_contact(client_c.user_id().unwrap(), cx)
5915        })
5916        .await
5917        .unwrap();
5918    executor.run_until_parked();
5919    assert_eq!(
5920        contacts(&client_b, cx_b),
5921        [
5922            ("user_a".to_string(), "offline", "free"),
5923            ("user_d".to_string(), "online", "free")
5924        ]
5925    );
5926    assert_eq!(
5927        contacts(&client_c, cx_c),
5928        [("user_a".to_string(), "offline", "free"),]
5929    );
5930
5931    fn contacts(
5932        client: &TestClient,
5933        cx: &TestAppContext,
5934    ) -> Vec<(String, &'static str, &'static str)> {
5935        client.user_store().read_with(cx, |store, _| {
5936            store
5937                .contacts()
5938                .iter()
5939                .map(|contact| {
5940                    (
5941                        contact.user.github_login.clone(),
5942                        if contact.online { "online" } else { "offline" },
5943                        if contact.busy { "busy" } else { "free" },
5944                    )
5945                })
5946                .collect()
5947        })
5948    }
5949}
5950
5951#[gpui::test(iterations = 10)]
5952async fn test_contact_requests(
5953    executor: BackgroundExecutor,
5954    cx_a: &mut TestAppContext,
5955    cx_a2: &mut TestAppContext,
5956    cx_b: &mut TestAppContext,
5957    cx_b2: &mut TestAppContext,
5958    cx_c: &mut TestAppContext,
5959    cx_c2: &mut TestAppContext,
5960) {
5961    // Connect to a server as 3 clients.
5962    let mut server = TestServer::start(executor.clone()).await;
5963    let client_a = server.create_client(cx_a, "user_a").await;
5964    let client_a2 = server.create_client(cx_a2, "user_a").await;
5965    let client_b = server.create_client(cx_b, "user_b").await;
5966    let client_b2 = server.create_client(cx_b2, "user_b").await;
5967    let client_c = server.create_client(cx_c, "user_c").await;
5968    let client_c2 = server.create_client(cx_c2, "user_c").await;
5969
5970    assert_eq!(client_a.user_id().unwrap(), client_a2.user_id().unwrap());
5971    assert_eq!(client_b.user_id().unwrap(), client_b2.user_id().unwrap());
5972    assert_eq!(client_c.user_id().unwrap(), client_c2.user_id().unwrap());
5973
5974    // User A and User C request that user B become their contact.
5975    client_a
5976        .user_store()
5977        .update(cx_a, |store, cx| {
5978            store.request_contact(client_b.user_id().unwrap(), cx)
5979        })
5980        .await
5981        .unwrap();
5982    client_c
5983        .user_store()
5984        .update(cx_c, |store, cx| {
5985            store.request_contact(client_b.user_id().unwrap(), cx)
5986        })
5987        .await
5988        .unwrap();
5989    executor.run_until_parked();
5990
5991    // All users see the pending request appear in all their clients.
5992    assert_eq!(
5993        client_a.summarize_contacts(cx_a).outgoing_requests,
5994        &["user_b"]
5995    );
5996    assert_eq!(
5997        client_a2.summarize_contacts(cx_a2).outgoing_requests,
5998        &["user_b"]
5999    );
6000    assert_eq!(
6001        client_b.summarize_contacts(cx_b).incoming_requests,
6002        &["user_a", "user_c"]
6003    );
6004    assert_eq!(
6005        client_b2.summarize_contacts(cx_b2).incoming_requests,
6006        &["user_a", "user_c"]
6007    );
6008    assert_eq!(
6009        client_c.summarize_contacts(cx_c).outgoing_requests,
6010        &["user_b"]
6011    );
6012    assert_eq!(
6013        client_c2.summarize_contacts(cx_c2).outgoing_requests,
6014        &["user_b"]
6015    );
6016
6017    // Contact requests are present upon connecting (tested here via disconnect/reconnect)
6018    disconnect_and_reconnect(&client_a, cx_a).await;
6019    disconnect_and_reconnect(&client_b, cx_b).await;
6020    disconnect_and_reconnect(&client_c, cx_c).await;
6021    executor.run_until_parked();
6022    assert_eq!(
6023        client_a.summarize_contacts(cx_a).outgoing_requests,
6024        &["user_b"]
6025    );
6026    assert_eq!(
6027        client_b.summarize_contacts(cx_b).incoming_requests,
6028        &["user_a", "user_c"]
6029    );
6030    assert_eq!(
6031        client_c.summarize_contacts(cx_c).outgoing_requests,
6032        &["user_b"]
6033    );
6034
6035    // User B accepts the request from user A.
6036    client_b
6037        .user_store()
6038        .update(cx_b, |store, cx| {
6039            store.respond_to_contact_request(client_a.user_id().unwrap(), true, cx)
6040        })
6041        .await
6042        .unwrap();
6043
6044    executor.run_until_parked();
6045
6046    // User B sees user A as their contact now in all client, and the incoming request from them is removed.
6047    let contacts_b = client_b.summarize_contacts(cx_b);
6048    assert_eq!(contacts_b.current, &["user_a"]);
6049    assert_eq!(contacts_b.incoming_requests, &["user_c"]);
6050    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6051    assert_eq!(contacts_b2.current, &["user_a"]);
6052    assert_eq!(contacts_b2.incoming_requests, &["user_c"]);
6053
6054    // User A sees user B as their contact now in all clients, and the outgoing request to them is removed.
6055    let contacts_a = client_a.summarize_contacts(cx_a);
6056    assert_eq!(contacts_a.current, &["user_b"]);
6057    assert!(contacts_a.outgoing_requests.is_empty());
6058    let contacts_a2 = client_a2.summarize_contacts(cx_a2);
6059    assert_eq!(contacts_a2.current, &["user_b"]);
6060    assert!(contacts_a2.outgoing_requests.is_empty());
6061
6062    // Contacts are present upon connecting (tested here via disconnect/reconnect)
6063    disconnect_and_reconnect(&client_a, cx_a).await;
6064    disconnect_and_reconnect(&client_b, cx_b).await;
6065    disconnect_and_reconnect(&client_c, cx_c).await;
6066    executor.run_until_parked();
6067    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6068    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6069    assert_eq!(
6070        client_b.summarize_contacts(cx_b).incoming_requests,
6071        &["user_c"]
6072    );
6073    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6074    assert_eq!(
6075        client_c.summarize_contacts(cx_c).outgoing_requests,
6076        &["user_b"]
6077    );
6078
6079    // User B rejects the request from user C.
6080    client_b
6081        .user_store()
6082        .update(cx_b, |store, cx| {
6083            store.respond_to_contact_request(client_c.user_id().unwrap(), false, cx)
6084        })
6085        .await
6086        .unwrap();
6087
6088    executor.run_until_parked();
6089
6090    // User B doesn't see user C as their contact, and the incoming request from them is removed.
6091    let contacts_b = client_b.summarize_contacts(cx_b);
6092    assert_eq!(contacts_b.current, &["user_a"]);
6093    assert!(contacts_b.incoming_requests.is_empty());
6094    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
6095    assert_eq!(contacts_b2.current, &["user_a"]);
6096    assert!(contacts_b2.incoming_requests.is_empty());
6097
6098    // User C doesn't see user B as their contact, and the outgoing request to them is removed.
6099    let contacts_c = client_c.summarize_contacts(cx_c);
6100    assert!(contacts_c.current.is_empty());
6101    assert!(contacts_c.outgoing_requests.is_empty());
6102    let contacts_c2 = client_c2.summarize_contacts(cx_c2);
6103    assert!(contacts_c2.current.is_empty());
6104    assert!(contacts_c2.outgoing_requests.is_empty());
6105
6106    // Incoming/outgoing requests are not present upon connecting (tested here via disconnect/reconnect)
6107    disconnect_and_reconnect(&client_a, cx_a).await;
6108    disconnect_and_reconnect(&client_b, cx_b).await;
6109    disconnect_and_reconnect(&client_c, cx_c).await;
6110    executor.run_until_parked();
6111    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
6112    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
6113    assert!(client_b
6114        .summarize_contacts(cx_b)
6115        .incoming_requests
6116        .is_empty());
6117    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
6118    assert!(client_c
6119        .summarize_contacts(cx_c)
6120        .outgoing_requests
6121        .is_empty());
6122
6123    async fn disconnect_and_reconnect(client: &TestClient, cx: &mut TestAppContext) {
6124        client.disconnect(&cx.to_async());
6125        client.clear_contacts(cx).await;
6126        client
6127            .authenticate_and_connect(false, &cx.to_async())
6128            .await
6129            .unwrap();
6130    }
6131}
6132
6133// TODO: Re-enable this test once we can replace our swift Livekit SDK with the rust SDK
6134#[cfg(not(target_os = "macos"))]
6135#[gpui::test(iterations = 10)]
6136async fn test_join_call_after_screen_was_shared(
6137    executor: BackgroundExecutor,
6138    cx_a: &mut TestAppContext,
6139    cx_b: &mut TestAppContext,
6140) {
6141    let mut server = TestServer::start(executor.clone()).await;
6142
6143    let client_a = server.create_client(cx_a, "user_a").await;
6144    let client_b = server.create_client(cx_b, "user_b").await;
6145    server
6146        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6147        .await;
6148
6149    let active_call_a = cx_a.read(ActiveCall::global);
6150    let active_call_b = cx_b.read(ActiveCall::global);
6151
6152    // Call users B and C from client A.
6153    active_call_a
6154        .update(cx_a, |call, cx| {
6155            call.invite(client_b.user_id().unwrap(), None, cx)
6156        })
6157        .await
6158        .unwrap();
6159
6160    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
6161    executor.run_until_parked();
6162    assert_eq!(
6163        room_participants(&room_a, cx_a),
6164        RoomParticipants {
6165            remote: Default::default(),
6166            pending: vec!["user_b".to_string()]
6167        }
6168    );
6169
6170    // User B receives the call.
6171
6172    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
6173    let call_b = incoming_call_b.next().await.unwrap().unwrap();
6174    assert_eq!(call_b.calling_user.github_login, "user_a");
6175
6176    // User A shares their screen
6177    let display = gpui::TestScreenCaptureSource::new();
6178    cx_a.set_screen_capture_sources(vec![display]);
6179    active_call_a
6180        .update(cx_a, |call, cx| {
6181            call.room()
6182                .unwrap()
6183                .update(cx, |room, cx| room.share_screen(cx))
6184        })
6185        .await
6186        .unwrap();
6187
6188    client_b.user_store().update(cx_b, |user_store, _| {
6189        user_store.clear_cache();
6190    });
6191
6192    // User B joins the room
6193    active_call_b
6194        .update(cx_b, |call, cx| call.accept_incoming(cx))
6195        .await
6196        .unwrap();
6197
6198    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
6199    assert!(incoming_call_b.next().await.unwrap().is_none());
6200
6201    executor.run_until_parked();
6202    assert_eq!(
6203        room_participants(&room_a, cx_a),
6204        RoomParticipants {
6205            remote: vec!["user_b".to_string()],
6206            pending: vec![],
6207        }
6208    );
6209    assert_eq!(
6210        room_participants(&room_b, cx_b),
6211        RoomParticipants {
6212            remote: vec!["user_a".to_string()],
6213            pending: vec![],
6214        }
6215    );
6216
6217    // Ensure User B sees User A's screenshare.
6218
6219    room_b.read_with(cx_b, |room, _| {
6220        assert_eq!(
6221            room.remote_participants()
6222                .get(&client_a.user_id().unwrap())
6223                .unwrap()
6224                .video_tracks
6225                .len(),
6226            1
6227        );
6228    });
6229}
6230
6231#[gpui::test]
6232async fn test_right_click_menu_behind_collab_panel(cx: &mut TestAppContext) {
6233    let mut server = TestServer::start(cx.executor().clone()).await;
6234    let client_a = server.create_client(cx, "user_a").await;
6235    let (_workspace_a, cx) = client_a.build_test_workspace(cx).await;
6236
6237    cx.simulate_resize(size(px(300.), px(300.)));
6238
6239    cx.simulate_keystrokes("cmd-n cmd-n cmd-n");
6240    cx.update(|window, _cx| window.refresh());
6241
6242    let tab_bounds = cx.debug_bounds("TAB-2").unwrap();
6243    let new_tab_button_bounds = cx.debug_bounds("ICON-Plus").unwrap();
6244
6245    assert!(
6246        tab_bounds.intersects(&new_tab_button_bounds),
6247        "Tab should overlap with the new tab button, if this is failing check if there's been a redesign!"
6248    );
6249
6250    cx.simulate_event(MouseDownEvent {
6251        button: MouseButton::Right,
6252        position: new_tab_button_bounds.center(),
6253        modifiers: Modifiers::default(),
6254        click_count: 1,
6255        first_mouse: false,
6256    });
6257
6258    // regression test that the right click menu for tabs does not open.
6259    assert!(cx.debug_bounds("MENU_ITEM-Close").is_none());
6260
6261    let tab_bounds = cx.debug_bounds("TAB-1").unwrap();
6262    cx.simulate_event(MouseDownEvent {
6263        button: MouseButton::Right,
6264        position: tab_bounds.center(),
6265        modifiers: Modifiers::default(),
6266        click_count: 1,
6267        first_mouse: false,
6268    });
6269    assert!(cx.debug_bounds("MENU_ITEM-Close").is_some());
6270}
6271
6272#[gpui::test]
6273async fn test_pane_split_left(cx: &mut TestAppContext) {
6274    let (_, client) = TestServer::start1(cx).await;
6275    let (workspace, cx) = client.build_test_workspace(cx).await;
6276
6277    cx.simulate_keystrokes("cmd-n");
6278    workspace.update(cx, |workspace, cx| {
6279        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 1);
6280    });
6281    cx.simulate_keystrokes("cmd-k left");
6282    workspace.update(cx, |workspace, cx| {
6283        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6284    });
6285    cx.simulate_keystrokes("cmd-k");
6286    // sleep for longer than the timeout in keyboard shortcut handling
6287    // to verify that it doesn't fire in this case.
6288    cx.executor().advance_clock(Duration::from_secs(2));
6289    cx.simulate_keystrokes("left");
6290    workspace.update(cx, |workspace, cx| {
6291        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6292    });
6293}
6294
6295#[gpui::test]
6296async fn test_join_after_restart(cx1: &mut TestAppContext, cx2: &mut TestAppContext) {
6297    let (mut server, client) = TestServer::start1(cx1).await;
6298    let channel1 = server.make_public_channel("channel1", &client, cx1).await;
6299    let channel2 = server.make_public_channel("channel2", &client, cx1).await;
6300
6301    join_channel(channel1, &client, cx1).await.unwrap();
6302    drop(client);
6303
6304    let client2 = server.create_client(cx2, "user_a").await;
6305    join_channel(channel2, &client2, cx2).await.unwrap();
6306}
6307
6308#[gpui::test]
6309async fn test_preview_tabs(cx: &mut TestAppContext) {
6310    let (_server, client) = TestServer::start1(cx).await;
6311    let (workspace, cx) = client.build_test_workspace(cx).await;
6312    let project = workspace.update(cx, |workspace, _| workspace.project().clone());
6313
6314    let worktree_id = project.update(cx, |project, cx| {
6315        project.worktrees(cx).next().unwrap().read(cx).id()
6316    });
6317
6318    let path_1 = ProjectPath {
6319        worktree_id,
6320        path: Path::new("1.txt").into(),
6321    };
6322    let path_2 = ProjectPath {
6323        worktree_id,
6324        path: Path::new("2.js").into(),
6325    };
6326    let path_3 = ProjectPath {
6327        worktree_id,
6328        path: Path::new("3.rs").into(),
6329    };
6330
6331    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6332
6333    let get_path = |pane: &Pane, idx: usize, cx: &App| {
6334        pane.item_for_index(idx).unwrap().project_path(cx).unwrap()
6335    };
6336
6337    // Opening item 3 as a "permanent" tab
6338    workspace
6339        .update_in(cx, |workspace, window, cx| {
6340            workspace.open_path(path_3.clone(), None, false, window, cx)
6341        })
6342        .await
6343        .unwrap();
6344
6345    pane.update(cx, |pane, cx| {
6346        assert_eq!(pane.items_len(), 1);
6347        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6348        assert_eq!(pane.preview_item_id(), None);
6349
6350        assert!(!pane.can_navigate_backward());
6351        assert!(!pane.can_navigate_forward());
6352    });
6353
6354    // Open item 1 as preview
6355    workspace
6356        .update_in(cx, |workspace, window, cx| {
6357            workspace.open_path_preview(path_1.clone(), None, true, true, true, window, cx)
6358        })
6359        .await
6360        .unwrap();
6361
6362    pane.update(cx, |pane, cx| {
6363        assert_eq!(pane.items_len(), 2);
6364        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6365        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6366        assert_eq!(
6367            pane.preview_item_id(),
6368            Some(pane.items().nth(1).unwrap().item_id())
6369        );
6370
6371        assert!(pane.can_navigate_backward());
6372        assert!(!pane.can_navigate_forward());
6373    });
6374
6375    // Open item 2 as preview
6376    workspace
6377        .update_in(cx, |workspace, window, cx| {
6378            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6379        })
6380        .await
6381        .unwrap();
6382
6383    pane.update(cx, |pane, cx| {
6384        assert_eq!(pane.items_len(), 2);
6385        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6386        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6387        assert_eq!(
6388            pane.preview_item_id(),
6389            Some(pane.items().nth(1).unwrap().item_id())
6390        );
6391
6392        assert!(pane.can_navigate_backward());
6393        assert!(!pane.can_navigate_forward());
6394    });
6395
6396    // Going back should show item 1 as preview
6397    workspace
6398        .update_in(cx, |workspace, window, cx| {
6399            workspace.go_back(pane.downgrade(), window, cx)
6400        })
6401        .await
6402        .unwrap();
6403
6404    pane.update(cx, |pane, cx| {
6405        assert_eq!(pane.items_len(), 2);
6406        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6407        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6408        assert_eq!(
6409            pane.preview_item_id(),
6410            Some(pane.items().nth(1).unwrap().item_id())
6411        );
6412
6413        assert!(pane.can_navigate_backward());
6414        assert!(pane.can_navigate_forward());
6415    });
6416
6417    // Closing item 1
6418    pane.update_in(cx, |pane, window, cx| {
6419        pane.close_item_by_id(
6420            pane.active_item().unwrap().item_id(),
6421            workspace::SaveIntent::Skip,
6422            window,
6423            cx,
6424        )
6425    })
6426    .await
6427    .unwrap();
6428
6429    pane.update(cx, |pane, cx| {
6430        assert_eq!(pane.items_len(), 1);
6431        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6432        assert_eq!(pane.preview_item_id(), None);
6433
6434        assert!(pane.can_navigate_backward());
6435        assert!(!pane.can_navigate_forward());
6436    });
6437
6438    // Going back should show item 1 as preview
6439    workspace
6440        .update_in(cx, |workspace, window, cx| {
6441            workspace.go_back(pane.downgrade(), window, cx)
6442        })
6443        .await
6444        .unwrap();
6445
6446    pane.update(cx, |pane, cx| {
6447        assert_eq!(pane.items_len(), 2);
6448        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6449        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6450        assert_eq!(
6451            pane.preview_item_id(),
6452            Some(pane.items().nth(1).unwrap().item_id())
6453        );
6454
6455        assert!(pane.can_navigate_backward());
6456        assert!(pane.can_navigate_forward());
6457    });
6458
6459    // Close permanent tab
6460    pane.update_in(cx, |pane, window, cx| {
6461        let id = pane.items().next().unwrap().item_id();
6462        pane.close_item_by_id(id, workspace::SaveIntent::Skip, window, cx)
6463    })
6464    .await
6465    .unwrap();
6466
6467    pane.update(cx, |pane, cx| {
6468        assert_eq!(pane.items_len(), 1);
6469        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6470        assert_eq!(
6471            pane.preview_item_id(),
6472            Some(pane.items().next().unwrap().item_id())
6473        );
6474
6475        assert!(pane.can_navigate_backward());
6476        assert!(pane.can_navigate_forward());
6477    });
6478
6479    // Split pane to the right
6480    pane.update(cx, |pane, cx| {
6481        pane.split(workspace::SplitDirection::Right, cx);
6482    });
6483
6484    let right_pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6485
6486    pane.update(cx, |pane, cx| {
6487        assert_eq!(pane.items_len(), 1);
6488        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6489        assert_eq!(
6490            pane.preview_item_id(),
6491            Some(pane.items().next().unwrap().item_id())
6492        );
6493
6494        assert!(pane.can_navigate_backward());
6495        assert!(pane.can_navigate_forward());
6496    });
6497
6498    right_pane.update(cx, |pane, cx| {
6499        assert_eq!(pane.items_len(), 1);
6500        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6501        assert_eq!(pane.preview_item_id(), None);
6502
6503        assert!(!pane.can_navigate_backward());
6504        assert!(!pane.can_navigate_forward());
6505    });
6506
6507    // Open item 2 as preview in right pane
6508    workspace
6509        .update_in(cx, |workspace, window, cx| {
6510            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6511        })
6512        .await
6513        .unwrap();
6514
6515    pane.update(cx, |pane, cx| {
6516        assert_eq!(pane.items_len(), 1);
6517        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6518        assert_eq!(
6519            pane.preview_item_id(),
6520            Some(pane.items().next().unwrap().item_id())
6521        );
6522
6523        assert!(pane.can_navigate_backward());
6524        assert!(pane.can_navigate_forward());
6525    });
6526
6527    right_pane.update(cx, |pane, cx| {
6528        assert_eq!(pane.items_len(), 2);
6529        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6530        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6531        assert_eq!(
6532            pane.preview_item_id(),
6533            Some(pane.items().nth(1).unwrap().item_id())
6534        );
6535
6536        assert!(pane.can_navigate_backward());
6537        assert!(!pane.can_navigate_forward());
6538    });
6539
6540    // Focus left pane
6541    workspace.update_in(cx, |workspace, window, cx| {
6542        workspace.activate_pane_in_direction(workspace::SplitDirection::Left, window, cx)
6543    });
6544
6545    // Open item 2 as preview in left pane
6546    workspace
6547        .update_in(cx, |workspace, window, cx| {
6548            workspace.open_path_preview(path_2.clone(), None, true, true, true, window, cx)
6549        })
6550        .await
6551        .unwrap();
6552
6553    pane.update(cx, |pane, cx| {
6554        assert_eq!(pane.items_len(), 1);
6555        assert_eq!(get_path(pane, 0, cx), path_2.clone());
6556        assert_eq!(
6557            pane.preview_item_id(),
6558            Some(pane.items().next().unwrap().item_id())
6559        );
6560
6561        assert!(pane.can_navigate_backward());
6562        assert!(!pane.can_navigate_forward());
6563    });
6564
6565    right_pane.update(cx, |pane, cx| {
6566        assert_eq!(pane.items_len(), 2);
6567        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6568        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6569        assert_eq!(
6570            pane.preview_item_id(),
6571            Some(pane.items().nth(1).unwrap().item_id())
6572        );
6573
6574        assert!(pane.can_navigate_backward());
6575        assert!(!pane.can_navigate_forward());
6576    });
6577}
6578
6579#[gpui::test(iterations = 10)]
6580async fn test_context_collaboration_with_reconnect(
6581    executor: BackgroundExecutor,
6582    cx_a: &mut TestAppContext,
6583    cx_b: &mut TestAppContext,
6584) {
6585    let mut server = TestServer::start(executor.clone()).await;
6586    let client_a = server.create_client(cx_a, "user_a").await;
6587    let client_b = server.create_client(cx_b, "user_b").await;
6588    server
6589        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6590        .await;
6591    let active_call_a = cx_a.read(ActiveCall::global);
6592
6593    client_a.fs().insert_tree("/a", Default::default()).await;
6594    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
6595    let project_id = active_call_a
6596        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6597        .await
6598        .unwrap();
6599    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6600
6601    // Client A sees that a guest has joined.
6602    executor.run_until_parked();
6603
6604    project_a.read_with(cx_a, |project, _| {
6605        assert_eq!(project.collaborators().len(), 1);
6606    });
6607    project_b.read_with(cx_b, |project, _| {
6608        assert_eq!(project.collaborators().len(), 1);
6609    });
6610
6611    cx_a.update(context_server::init);
6612    cx_b.update(context_server::init);
6613    let prompt_builder = Arc::new(PromptBuilder::new(None).unwrap());
6614    let context_store_a = cx_a
6615        .update(|cx| {
6616            ContextStore::new(
6617                project_a.clone(),
6618                prompt_builder.clone(),
6619                Arc::new(SlashCommandWorkingSet::default()),
6620                cx,
6621            )
6622        })
6623        .await
6624        .unwrap();
6625    let context_store_b = cx_b
6626        .update(|cx| {
6627            ContextStore::new(
6628                project_b.clone(),
6629                prompt_builder.clone(),
6630                Arc::new(SlashCommandWorkingSet::default()),
6631                cx,
6632            )
6633        })
6634        .await
6635        .unwrap();
6636
6637    // Client A creates a new chats.
6638    let context_a = context_store_a.update(cx_a, |store, cx| store.create(cx));
6639    executor.run_until_parked();
6640
6641    // Client B retrieves host's contexts and joins one.
6642    let context_b = context_store_b
6643        .update(cx_b, |store, cx| {
6644            let host_contexts = store.host_contexts().to_vec();
6645            assert_eq!(host_contexts.len(), 1);
6646            store.open_remote_context(host_contexts[0].id.clone(), cx)
6647        })
6648        .await
6649        .unwrap();
6650
6651    // Host and guest make changes
6652    context_a.update(cx_a, |context, cx| {
6653        context.buffer().update(cx, |buffer, cx| {
6654            buffer.edit([(0..0, "Host change\n")], None, cx)
6655        })
6656    });
6657    context_b.update(cx_b, |context, cx| {
6658        context.buffer().update(cx, |buffer, cx| {
6659            buffer.edit([(0..0, "Guest change\n")], None, cx)
6660        })
6661    });
6662    executor.run_until_parked();
6663    assert_eq!(
6664        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6665        "Guest change\nHost change\n"
6666    );
6667    assert_eq!(
6668        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6669        "Guest change\nHost change\n"
6670    );
6671
6672    // Disconnect client A and make some changes while disconnected.
6673    server.disconnect_client(client_a.peer_id().unwrap());
6674    server.forbid_connections();
6675    context_a.update(cx_a, |context, cx| {
6676        context.buffer().update(cx, |buffer, cx| {
6677            buffer.edit([(0..0, "Host offline change\n")], None, cx)
6678        })
6679    });
6680    context_b.update(cx_b, |context, cx| {
6681        context.buffer().update(cx, |buffer, cx| {
6682            buffer.edit([(0..0, "Guest offline change\n")], None, cx)
6683        })
6684    });
6685    executor.run_until_parked();
6686    assert_eq!(
6687        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6688        "Host offline change\nGuest change\nHost change\n"
6689    );
6690    assert_eq!(
6691        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6692        "Guest offline change\nGuest change\nHost change\n"
6693    );
6694
6695    // Allow client A to reconnect and verify that contexts converge.
6696    server.allow_connections();
6697    executor.advance_clock(RECEIVE_TIMEOUT);
6698    assert_eq!(
6699        context_a.read_with(cx_a, |context, cx| context.buffer().read(cx).text()),
6700        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6701    );
6702    assert_eq!(
6703        context_b.read_with(cx_b, |context, cx| context.buffer().read(cx).text()),
6704        "Guest offline change\nHost offline change\nGuest change\nHost change\n"
6705    );
6706
6707    // Client A disconnects without being able to reconnect. Context B becomes readonly.
6708    server.forbid_connections();
6709    server.disconnect_client(client_a.peer_id().unwrap());
6710    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
6711    context_b.read_with(cx_b, |context, cx| {
6712        assert!(context.buffer().read(cx).read_only());
6713    });
6714}
6715
6716#[gpui::test]
6717async fn test_remote_git_branches(
6718    executor: BackgroundExecutor,
6719    cx_a: &mut TestAppContext,
6720    cx_b: &mut TestAppContext,
6721) {
6722    let mut server = TestServer::start(executor.clone()).await;
6723    let client_a = server.create_client(cx_a, "user_a").await;
6724    let client_b = server.create_client(cx_b, "user_b").await;
6725    server
6726        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
6727        .await;
6728    let active_call_a = cx_a.read(ActiveCall::global);
6729
6730    client_a
6731        .fs()
6732        .insert_tree("/project", serde_json::json!({ ".git":{} }))
6733        .await;
6734    let branches = ["main", "dev", "feature-1"];
6735    client_a
6736        .fs()
6737        .insert_branches(Path::new("/project/.git"), &branches);
6738    let branches_set = branches
6739        .into_iter()
6740        .map(ToString::to_string)
6741        .collect::<HashSet<_>>();
6742
6743    let (project_a, worktree_id) = client_a.build_local_project("/project", cx_a).await;
6744
6745    let project_id = active_call_a
6746        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
6747        .await
6748        .unwrap();
6749    let project_b = client_b.join_remote_project(project_id, cx_b).await;
6750
6751    // Client A sees that a guest has joined and the repo has been populated
6752    executor.run_until_parked();
6753
6754    let repo_b = cx_b.update(|cx| project_b.read(cx).active_repository(cx).unwrap());
6755
6756    let root_path = ProjectPath::root_path(worktree_id);
6757
6758    let branches_b = cx_b
6759        .update(|cx| repo_b.update(cx, |repository, _| repository.branches()))
6760        .await
6761        .unwrap()
6762        .unwrap();
6763
6764    let new_branch = branches[2];
6765
6766    let branches_b = branches_b
6767        .into_iter()
6768        .map(|branch| branch.name.to_string())
6769        .collect::<HashSet<_>>();
6770
6771    assert_eq!(branches_b, branches_set);
6772
6773    cx_b.update(|cx| repo_b.read(cx).change_branch(new_branch.to_string()))
6774        .await
6775        .unwrap()
6776        .unwrap();
6777
6778    executor.run_until_parked();
6779
6780    let host_branch = cx_a.update(|cx| {
6781        project_a.update(cx, |project, cx| {
6782            project.worktree_store().update(cx, |worktree_store, cx| {
6783                worktree_store
6784                    .current_branch(root_path.clone(), cx)
6785                    .unwrap()
6786            })
6787        })
6788    });
6789
6790    assert_eq!(host_branch.name, branches[2]);
6791
6792    // Also try creating a new branch
6793    cx_b.update(|cx| {
6794        repo_b
6795            .read(cx)
6796            .create_branch("totally-new-branch".to_string())
6797    })
6798    .await
6799    .unwrap()
6800    .unwrap();
6801
6802    cx_b.update(|cx| {
6803        repo_b
6804            .read(cx)
6805            .change_branch("totally-new-branch".to_string())
6806    })
6807    .await
6808    .unwrap()
6809    .unwrap();
6810
6811    executor.run_until_parked();
6812
6813    let host_branch = cx_a.update(|cx| {
6814        project_a.update(cx, |project, cx| {
6815            project.worktree_store().update(cx, |worktree_store, cx| {
6816                worktree_store.current_branch(root_path, cx).unwrap()
6817            })
6818        })
6819    });
6820
6821    assert_eq!(host_branch.name, "totally-new-branch");
6822}