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 call::{room, ActiveCall, ParticipantLocation, Room};
  10use client::{User, RECEIVE_TIMEOUT};
  11use collections::{HashMap, HashSet};
  12use fs::{FakeFs, Fs as _, RemoveOptions};
  13use futures::{channel::mpsc, StreamExt as _};
  14use git::repository::GitFileStatus;
  15use gpui::{
  16    px, size, AppContext, BackgroundExecutor, BorrowAppContext, Model, Modifiers, MouseButton,
  17    MouseDownEvent, TestAppContext,
  18};
  19use language::{
  20    language_settings::{AllLanguageSettings, Formatter},
  21    tree_sitter_rust, Diagnostic, DiagnosticEntry, FakeLspAdapter, Language, LanguageConfig,
  22    LanguageMatcher, LineEnding, OffsetRangeExt, Point, Rope,
  23};
  24use live_kit_client::MacOSDisplay;
  25use lsp::LanguageServerId;
  26use parking_lot::Mutex;
  27use project::{
  28    search::SearchQuery, DiagnosticSummary, FormatTrigger, HoverBlockKind, Project, ProjectPath,
  29    SearchResult,
  30};
  31use rand::prelude::*;
  32use serde_json::json;
  33use settings::SettingsStore;
  34use std::{
  35    cell::{Cell, RefCell},
  36    env, future, mem,
  37    path::{Path, PathBuf},
  38    rc::Rc,
  39    sync::{
  40        atomic::{AtomicBool, Ordering::SeqCst},
  41        Arc,
  42    },
  43    time::Duration,
  44};
  45use unindent::Unindent as _;
  46use workspace::Pane;
  47
  48#[ctor::ctor]
  49fn init_logger() {
  50    if std::env::var("RUST_LOG").is_ok() {
  51        env_logger::init();
  52    }
  53}
  54
  55#[gpui::test(iterations = 10)]
  56async fn test_basic_calls(
  57    executor: BackgroundExecutor,
  58    cx_a: &mut TestAppContext,
  59    cx_b: &mut TestAppContext,
  60    cx_b2: &mut TestAppContext,
  61    cx_c: &mut TestAppContext,
  62) {
  63    let mut server = TestServer::start(executor.clone()).await;
  64
  65    let client_a = server.create_client(cx_a, "user_a").await;
  66    let client_b = server.create_client(cx_b, "user_b").await;
  67    let client_c = server.create_client(cx_c, "user_c").await;
  68    server
  69        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
  70        .await;
  71
  72    let active_call_a = cx_a.read(ActiveCall::global);
  73    let active_call_b = cx_b.read(ActiveCall::global);
  74    let active_call_c = cx_c.read(ActiveCall::global);
  75
  76    // Call user B from client A.
  77    active_call_a
  78        .update(cx_a, |call, cx| {
  79            call.invite(client_b.user_id().unwrap(), None, cx)
  80        })
  81        .await
  82        .unwrap();
  83    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
  84    executor.run_until_parked();
  85    assert_eq!(
  86        room_participants(&room_a, cx_a),
  87        RoomParticipants {
  88            remote: Default::default(),
  89            pending: vec!["user_b".to_string()]
  90        }
  91    );
  92
  93    // User B receives the call.
  94
  95    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
  96    let call_b = incoming_call_b.next().await.unwrap().unwrap();
  97    assert_eq!(call_b.calling_user.github_login, "user_a");
  98
  99    // User B connects via another client and also receives a ring on the newly-connected client.
 100    let _client_b2 = server.create_client(cx_b2, "user_b").await;
 101    let active_call_b2 = cx_b2.read(ActiveCall::global);
 102
 103    let mut incoming_call_b2 = active_call_b2.read_with(cx_b2, |call, _| call.incoming());
 104    executor.run_until_parked();
 105    let call_b2 = incoming_call_b2.next().await.unwrap().unwrap();
 106    assert_eq!(call_b2.calling_user.github_login, "user_a");
 107
 108    // User B joins the room using the first client.
 109    active_call_b
 110        .update(cx_b, |call, cx| call.accept_incoming(cx))
 111        .await
 112        .unwrap();
 113
 114    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 115    assert!(incoming_call_b.next().await.unwrap().is_none());
 116
 117    executor.run_until_parked();
 118    assert_eq!(
 119        room_participants(&room_a, cx_a),
 120        RoomParticipants {
 121            remote: vec!["user_b".to_string()],
 122            pending: Default::default()
 123        }
 124    );
 125    assert_eq!(
 126        room_participants(&room_b, cx_b),
 127        RoomParticipants {
 128            remote: vec!["user_a".to_string()],
 129            pending: Default::default()
 130        }
 131    );
 132
 133    // Call user C from client B.
 134
 135    let mut incoming_call_c = active_call_c.read_with(cx_c, |call, _| call.incoming());
 136    active_call_b
 137        .update(cx_b, |call, cx| {
 138            call.invite(client_c.user_id().unwrap(), None, cx)
 139        })
 140        .await
 141        .unwrap();
 142
 143    executor.run_until_parked();
 144    assert_eq!(
 145        room_participants(&room_a, cx_a),
 146        RoomParticipants {
 147            remote: vec!["user_b".to_string()],
 148            pending: vec!["user_c".to_string()]
 149        }
 150    );
 151    assert_eq!(
 152        room_participants(&room_b, cx_b),
 153        RoomParticipants {
 154            remote: vec!["user_a".to_string()],
 155            pending: vec!["user_c".to_string()]
 156        }
 157    );
 158
 159    // User C receives the call, but declines it.
 160    let call_c = incoming_call_c.next().await.unwrap().unwrap();
 161    assert_eq!(call_c.calling_user.github_login, "user_b");
 162    active_call_c.update(cx_c, |call, cx| call.decline_incoming(cx).unwrap());
 163    assert!(incoming_call_c.next().await.unwrap().is_none());
 164
 165    executor.run_until_parked();
 166    assert_eq!(
 167        room_participants(&room_a, cx_a),
 168        RoomParticipants {
 169            remote: vec!["user_b".to_string()],
 170            pending: Default::default()
 171        }
 172    );
 173    assert_eq!(
 174        room_participants(&room_b, cx_b),
 175        RoomParticipants {
 176            remote: vec!["user_a".to_string()],
 177            pending: Default::default()
 178        }
 179    );
 180
 181    // Call user C again from user A.
 182    active_call_a
 183        .update(cx_a, |call, cx| {
 184            call.invite(client_c.user_id().unwrap(), None, cx)
 185        })
 186        .await
 187        .unwrap();
 188
 189    executor.run_until_parked();
 190    assert_eq!(
 191        room_participants(&room_a, cx_a),
 192        RoomParticipants {
 193            remote: vec!["user_b".to_string()],
 194            pending: vec!["user_c".to_string()]
 195        }
 196    );
 197    assert_eq!(
 198        room_participants(&room_b, cx_b),
 199        RoomParticipants {
 200            remote: vec!["user_a".to_string()],
 201            pending: vec!["user_c".to_string()]
 202        }
 203    );
 204
 205    // User C accepts the call.
 206    let call_c = incoming_call_c.next().await.unwrap().unwrap();
 207    assert_eq!(call_c.calling_user.github_login, "user_a");
 208    active_call_c
 209        .update(cx_c, |call, cx| call.accept_incoming(cx))
 210        .await
 211        .unwrap();
 212    assert!(incoming_call_c.next().await.unwrap().is_none());
 213
 214    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 215
 216    executor.run_until_parked();
 217    assert_eq!(
 218        room_participants(&room_a, cx_a),
 219        RoomParticipants {
 220            remote: vec!["user_b".to_string(), "user_c".to_string()],
 221            pending: Default::default()
 222        }
 223    );
 224    assert_eq!(
 225        room_participants(&room_b, cx_b),
 226        RoomParticipants {
 227            remote: vec!["user_a".to_string(), "user_c".to_string()],
 228            pending: Default::default()
 229        }
 230    );
 231    assert_eq!(
 232        room_participants(&room_c, cx_c),
 233        RoomParticipants {
 234            remote: vec!["user_a".to_string(), "user_b".to_string()],
 235            pending: Default::default()
 236        }
 237    );
 238
 239    // User A shares their screen
 240    let display = MacOSDisplay::new();
 241    let events_b = active_call_events(cx_b);
 242    let events_c = active_call_events(cx_c);
 243    active_call_a
 244        .update(cx_a, |call, cx| {
 245            call.room().unwrap().update(cx, |room, cx| {
 246                room.set_display_sources(vec![display.clone()]);
 247                room.share_screen(cx)
 248            })
 249        })
 250        .await
 251        .unwrap();
 252
 253    executor.run_until_parked();
 254
 255    // User B observes the remote screen sharing track.
 256    assert_eq!(events_b.borrow().len(), 1);
 257    let event_b = events_b.borrow().first().unwrap().clone();
 258    if let call::room::Event::RemoteVideoTracksChanged { participant_id } = event_b {
 259        assert_eq!(participant_id, client_a.peer_id().unwrap());
 260
 261        room_b.read_with(cx_b, |room, _| {
 262            assert_eq!(
 263                room.remote_participants()[&client_a.user_id().unwrap()]
 264                    .video_tracks
 265                    .len(),
 266                1
 267            );
 268        });
 269    } else {
 270        panic!("unexpected event")
 271    }
 272
 273    // User C observes the remote screen sharing track.
 274    assert_eq!(events_c.borrow().len(), 1);
 275    let event_c = events_c.borrow().first().unwrap().clone();
 276    if let call::room::Event::RemoteVideoTracksChanged { participant_id } = event_c {
 277        assert_eq!(participant_id, client_a.peer_id().unwrap());
 278
 279        room_c.read_with(cx_c, |room, _| {
 280            assert_eq!(
 281                room.remote_participants()[&client_a.user_id().unwrap()]
 282                    .video_tracks
 283                    .len(),
 284                1
 285            );
 286        });
 287    } else {
 288        panic!("unexpected event")
 289    }
 290
 291    // User A leaves the room.
 292    active_call_a
 293        .update(cx_a, |call, cx| {
 294            let hang_up = call.hang_up(cx);
 295            assert!(call.room().is_none());
 296            hang_up
 297        })
 298        .await
 299        .unwrap();
 300    executor.run_until_parked();
 301    assert_eq!(
 302        room_participants(&room_a, cx_a),
 303        RoomParticipants {
 304            remote: Default::default(),
 305            pending: Default::default()
 306        }
 307    );
 308    assert_eq!(
 309        room_participants(&room_b, cx_b),
 310        RoomParticipants {
 311            remote: vec!["user_c".to_string()],
 312            pending: Default::default()
 313        }
 314    );
 315    assert_eq!(
 316        room_participants(&room_c, cx_c),
 317        RoomParticipants {
 318            remote: vec!["user_b".to_string()],
 319            pending: Default::default()
 320        }
 321    );
 322
 323    // User B gets disconnected from the LiveKit server, which causes them
 324    // to automatically leave the room. User C leaves the room as well because
 325    // nobody else is in there.
 326    server
 327        .test_live_kit_server
 328        .disconnect_client(client_b.user_id().unwrap().to_string())
 329        .await;
 330    executor.run_until_parked();
 331
 332    active_call_b.read_with(cx_b, |call, _| assert!(call.room().is_none()));
 333
 334    active_call_c.read_with(cx_c, |call, _| assert!(call.room().is_none()));
 335    assert_eq!(
 336        room_participants(&room_a, cx_a),
 337        RoomParticipants {
 338            remote: Default::default(),
 339            pending: Default::default()
 340        }
 341    );
 342    assert_eq!(
 343        room_participants(&room_b, cx_b),
 344        RoomParticipants {
 345            remote: Default::default(),
 346            pending: Default::default()
 347        }
 348    );
 349    assert_eq!(
 350        room_participants(&room_c, cx_c),
 351        RoomParticipants {
 352            remote: Default::default(),
 353            pending: Default::default()
 354        }
 355    );
 356}
 357
 358#[gpui::test(iterations = 10)]
 359async fn test_calling_multiple_users_simultaneously(
 360    executor: BackgroundExecutor,
 361    cx_a: &mut TestAppContext,
 362    cx_b: &mut TestAppContext,
 363    cx_c: &mut TestAppContext,
 364    cx_d: &mut TestAppContext,
 365) {
 366    let mut server = TestServer::start(executor.clone()).await;
 367
 368    let client_a = server.create_client(cx_a, "user_a").await;
 369    let client_b = server.create_client(cx_b, "user_b").await;
 370    let client_c = server.create_client(cx_c, "user_c").await;
 371    let client_d = server.create_client(cx_d, "user_d").await;
 372    server
 373        .make_contacts(&mut [
 374            (&client_a, cx_a),
 375            (&client_b, cx_b),
 376            (&client_c, cx_c),
 377            (&client_d, cx_d),
 378        ])
 379        .await;
 380
 381    let active_call_a = cx_a.read(ActiveCall::global);
 382    let active_call_b = cx_b.read(ActiveCall::global);
 383    let active_call_c = cx_c.read(ActiveCall::global);
 384    let active_call_d = cx_d.read(ActiveCall::global);
 385
 386    // Simultaneously call user B and user C from client A.
 387    let b_invite = active_call_a.update(cx_a, |call, cx| {
 388        call.invite(client_b.user_id().unwrap(), None, cx)
 389    });
 390    let c_invite = active_call_a.update(cx_a, |call, cx| {
 391        call.invite(client_c.user_id().unwrap(), None, cx)
 392    });
 393    b_invite.await.unwrap();
 394    c_invite.await.unwrap();
 395
 396    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 397    executor.run_until_parked();
 398    assert_eq!(
 399        room_participants(&room_a, cx_a),
 400        RoomParticipants {
 401            remote: Default::default(),
 402            pending: vec!["user_b".to_string(), "user_c".to_string()]
 403        }
 404    );
 405
 406    // Call client D from client A.
 407    active_call_a
 408        .update(cx_a, |call, cx| {
 409            call.invite(client_d.user_id().unwrap(), None, cx)
 410        })
 411        .await
 412        .unwrap();
 413    executor.run_until_parked();
 414    assert_eq!(
 415        room_participants(&room_a, cx_a),
 416        RoomParticipants {
 417            remote: Default::default(),
 418            pending: vec![
 419                "user_b".to_string(),
 420                "user_c".to_string(),
 421                "user_d".to_string()
 422            ]
 423        }
 424    );
 425
 426    // Accept the call on all clients simultaneously.
 427    let accept_b = active_call_b.update(cx_b, |call, cx| call.accept_incoming(cx));
 428    let accept_c = active_call_c.update(cx_c, |call, cx| call.accept_incoming(cx));
 429    let accept_d = active_call_d.update(cx_d, |call, cx| call.accept_incoming(cx));
 430    accept_b.await.unwrap();
 431    accept_c.await.unwrap();
 432    accept_d.await.unwrap();
 433
 434    executor.run_until_parked();
 435
 436    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 437
 438    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 439
 440    let room_d = active_call_d.read_with(cx_d, |call, _| call.room().unwrap().clone());
 441    assert_eq!(
 442        room_participants(&room_a, cx_a),
 443        RoomParticipants {
 444            remote: vec![
 445                "user_b".to_string(),
 446                "user_c".to_string(),
 447                "user_d".to_string(),
 448            ],
 449            pending: Default::default()
 450        }
 451    );
 452    assert_eq!(
 453        room_participants(&room_b, cx_b),
 454        RoomParticipants {
 455            remote: vec![
 456                "user_a".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_c, cx_c),
 465        RoomParticipants {
 466            remote: vec![
 467                "user_a".to_string(),
 468                "user_b".to_string(),
 469                "user_d".to_string(),
 470            ],
 471            pending: Default::default()
 472        }
 473    );
 474    assert_eq!(
 475        room_participants(&room_d, cx_d),
 476        RoomParticipants {
 477            remote: vec![
 478                "user_a".to_string(),
 479                "user_b".to_string(),
 480                "user_c".to_string(),
 481            ],
 482            pending: Default::default()
 483        }
 484    );
 485}
 486
 487#[gpui::test(iterations = 10)]
 488async fn test_joining_channels_and_calling_multiple_users_simultaneously(
 489    executor: BackgroundExecutor,
 490    cx_a: &mut TestAppContext,
 491    cx_b: &mut TestAppContext,
 492    cx_c: &mut TestAppContext,
 493) {
 494    let mut server = TestServer::start(executor.clone()).await;
 495
 496    let client_a = server.create_client(cx_a, "user_a").await;
 497    let client_b = server.create_client(cx_b, "user_b").await;
 498    let client_c = server.create_client(cx_c, "user_c").await;
 499    server
 500        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
 501        .await;
 502
 503    let channel_1 = server
 504        .make_channel(
 505            "channel1",
 506            None,
 507            (&client_a, cx_a),
 508            &mut [(&client_b, cx_b), (&client_c, cx_c)],
 509        )
 510        .await;
 511
 512    let channel_2 = server
 513        .make_channel(
 514            "channel2",
 515            None,
 516            (&client_a, cx_a),
 517            &mut [(&client_b, cx_b), (&client_c, cx_c)],
 518        )
 519        .await;
 520
 521    let active_call_a = cx_a.read(ActiveCall::global);
 522
 523    // Simultaneously join channel 1 and then channel 2
 524    active_call_a
 525        .update(cx_a, |call, cx| call.join_channel(channel_1, cx))
 526        .detach();
 527    let join_channel_2 = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_2, cx));
 528
 529    join_channel_2.await.unwrap();
 530
 531    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 532    executor.run_until_parked();
 533
 534    assert_eq!(channel_id(&room_a, cx_a), Some(channel_2));
 535
 536    // Leave the room
 537    active_call_a
 538        .update(cx_a, |call, cx| {
 539            let hang_up = call.hang_up(cx);
 540            hang_up
 541        })
 542        .await
 543        .unwrap();
 544
 545    // Initiating invites and then joining a channel should fail gracefully
 546    let b_invite = active_call_a.update(cx_a, |call, cx| {
 547        call.invite(client_b.user_id().unwrap(), None, cx)
 548    });
 549    let c_invite = active_call_a.update(cx_a, |call, cx| {
 550        call.invite(client_c.user_id().unwrap(), None, cx)
 551    });
 552
 553    let join_channel = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_1, cx));
 554
 555    b_invite.await.unwrap();
 556    c_invite.await.unwrap();
 557    join_channel.await.unwrap();
 558
 559    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 560    executor.run_until_parked();
 561
 562    assert_eq!(
 563        room_participants(&room_a, cx_a),
 564        RoomParticipants {
 565            remote: Default::default(),
 566            pending: vec!["user_b".to_string(), "user_c".to_string()]
 567        }
 568    );
 569
 570    assert_eq!(channel_id(&room_a, cx_a), None);
 571
 572    // Leave the room
 573    active_call_a
 574        .update(cx_a, |call, cx| {
 575            let hang_up = call.hang_up(cx);
 576            hang_up
 577        })
 578        .await
 579        .unwrap();
 580
 581    // Simultaneously join channel 1 and call user B and user C from client A.
 582    let join_channel = active_call_a.update(cx_a, |call, cx| call.join_channel(channel_1, cx));
 583
 584    let b_invite = active_call_a.update(cx_a, |call, cx| {
 585        call.invite(client_b.user_id().unwrap(), None, cx)
 586    });
 587    let c_invite = active_call_a.update(cx_a, |call, cx| {
 588        call.invite(client_c.user_id().unwrap(), None, cx)
 589    });
 590
 591    join_channel.await.unwrap();
 592    b_invite.await.unwrap();
 593    c_invite.await.unwrap();
 594
 595    active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 596    executor.run_until_parked();
 597}
 598
 599#[gpui::test(iterations = 10)]
 600async fn test_room_uniqueness(
 601    executor: BackgroundExecutor,
 602    cx_a: &mut TestAppContext,
 603    cx_a2: &mut TestAppContext,
 604    cx_b: &mut TestAppContext,
 605    cx_b2: &mut TestAppContext,
 606    cx_c: &mut TestAppContext,
 607) {
 608    let mut server = TestServer::start(executor.clone()).await;
 609    let client_a = server.create_client(cx_a, "user_a").await;
 610    let _client_a2 = server.create_client(cx_a2, "user_a").await;
 611    let client_b = server.create_client(cx_b, "user_b").await;
 612    let _client_b2 = server.create_client(cx_b2, "user_b").await;
 613    let client_c = server.create_client(cx_c, "user_c").await;
 614    server
 615        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
 616        .await;
 617
 618    let active_call_a = cx_a.read(ActiveCall::global);
 619    let active_call_a2 = cx_a2.read(ActiveCall::global);
 620    let active_call_b = cx_b.read(ActiveCall::global);
 621    let active_call_b2 = cx_b2.read(ActiveCall::global);
 622    let active_call_c = cx_c.read(ActiveCall::global);
 623
 624    // Call user B from client A.
 625    active_call_a
 626        .update(cx_a, |call, cx| {
 627            call.invite(client_b.user_id().unwrap(), None, cx)
 628        })
 629        .await
 630        .unwrap();
 631
 632    // Ensure a new room can't be created given user A just created one.
 633    active_call_a2
 634        .update(cx_a2, |call, cx| {
 635            call.invite(client_c.user_id().unwrap(), None, cx)
 636        })
 637        .await
 638        .unwrap_err();
 639
 640    active_call_a2.read_with(cx_a2, |call, _| assert!(call.room().is_none()));
 641
 642    // User B receives the call from user A.
 643
 644    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 645    let call_b1 = incoming_call_b.next().await.unwrap().unwrap();
 646    assert_eq!(call_b1.calling_user.github_login, "user_a");
 647
 648    // Ensure calling users A and B from client C fails.
 649    active_call_c
 650        .update(cx_c, |call, cx| {
 651            call.invite(client_a.user_id().unwrap(), None, cx)
 652        })
 653        .await
 654        .unwrap_err();
 655    active_call_c
 656        .update(cx_c, |call, cx| {
 657            call.invite(client_b.user_id().unwrap(), None, cx)
 658        })
 659        .await
 660        .unwrap_err();
 661
 662    // Ensure User B can't create a room while they still have an incoming call.
 663    active_call_b2
 664        .update(cx_b2, |call, cx| {
 665            call.invite(client_c.user_id().unwrap(), None, cx)
 666        })
 667        .await
 668        .unwrap_err();
 669
 670    active_call_b2.read_with(cx_b2, |call, _| assert!(call.room().is_none()));
 671
 672    // User B joins the room and calling them after they've joined still fails.
 673    active_call_b
 674        .update(cx_b, |call, cx| call.accept_incoming(cx))
 675        .await
 676        .unwrap();
 677    active_call_c
 678        .update(cx_c, |call, cx| {
 679            call.invite(client_b.user_id().unwrap(), None, cx)
 680        })
 681        .await
 682        .unwrap_err();
 683
 684    // Ensure User B can't create a room while they belong to another room.
 685    active_call_b2
 686        .update(cx_b2, |call, cx| {
 687            call.invite(client_c.user_id().unwrap(), None, cx)
 688        })
 689        .await
 690        .unwrap_err();
 691
 692    active_call_b2.read_with(cx_b2, |call, _| assert!(call.room().is_none()));
 693
 694    // Client C can successfully call client B after client B leaves the room.
 695    active_call_b
 696        .update(cx_b, |call, cx| call.hang_up(cx))
 697        .await
 698        .unwrap();
 699    executor.run_until_parked();
 700    active_call_c
 701        .update(cx_c, |call, cx| {
 702            call.invite(client_b.user_id().unwrap(), None, cx)
 703        })
 704        .await
 705        .unwrap();
 706    executor.run_until_parked();
 707    let call_b2 = incoming_call_b.next().await.unwrap().unwrap();
 708    assert_eq!(call_b2.calling_user.github_login, "user_c");
 709}
 710
 711#[gpui::test(iterations = 10)]
 712async fn test_client_disconnecting_from_room(
 713    executor: BackgroundExecutor,
 714    cx_a: &mut TestAppContext,
 715    cx_b: &mut TestAppContext,
 716) {
 717    let mut server = TestServer::start(executor.clone()).await;
 718    let client_a = server.create_client(cx_a, "user_a").await;
 719    let client_b = server.create_client(cx_b, "user_b").await;
 720    server
 721        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
 722        .await;
 723
 724    let active_call_a = cx_a.read(ActiveCall::global);
 725    let active_call_b = cx_b.read(ActiveCall::global);
 726
 727    // Call user B from client A.
 728    active_call_a
 729        .update(cx_a, |call, cx| {
 730            call.invite(client_b.user_id().unwrap(), None, cx)
 731        })
 732        .await
 733        .unwrap();
 734
 735    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 736
 737    // User B receives the call and joins the room.
 738
 739    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 740    incoming_call_b.next().await.unwrap().unwrap();
 741    active_call_b
 742        .update(cx_b, |call, cx| call.accept_incoming(cx))
 743        .await
 744        .unwrap();
 745
 746    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 747    executor.run_until_parked();
 748    assert_eq!(
 749        room_participants(&room_a, cx_a),
 750        RoomParticipants {
 751            remote: vec!["user_b".to_string()],
 752            pending: Default::default()
 753        }
 754    );
 755    assert_eq!(
 756        room_participants(&room_b, cx_b),
 757        RoomParticipants {
 758            remote: vec!["user_a".to_string()],
 759            pending: Default::default()
 760        }
 761    );
 762
 763    // User A automatically reconnects to the room upon disconnection.
 764    server.disconnect_client(client_a.peer_id().unwrap());
 765    executor.advance_clock(RECEIVE_TIMEOUT);
 766    executor.run_until_parked();
 767    assert_eq!(
 768        room_participants(&room_a, cx_a),
 769        RoomParticipants {
 770            remote: vec!["user_b".to_string()],
 771            pending: Default::default()
 772        }
 773    );
 774    assert_eq!(
 775        room_participants(&room_b, cx_b),
 776        RoomParticipants {
 777            remote: vec!["user_a".to_string()],
 778            pending: Default::default()
 779        }
 780    );
 781
 782    // When user A disconnects, both client A and B clear their room on the active call.
 783    server.forbid_connections();
 784    server.disconnect_client(client_a.peer_id().unwrap());
 785    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
 786
 787    active_call_a.read_with(cx_a, |call, _| assert!(call.room().is_none()));
 788
 789    active_call_b.read_with(cx_b, |call, _| assert!(call.room().is_none()));
 790    assert_eq!(
 791        room_participants(&room_a, cx_a),
 792        RoomParticipants {
 793            remote: Default::default(),
 794            pending: Default::default()
 795        }
 796    );
 797    assert_eq!(
 798        room_participants(&room_b, cx_b),
 799        RoomParticipants {
 800            remote: Default::default(),
 801            pending: Default::default()
 802        }
 803    );
 804
 805    // Allow user A to reconnect to the server.
 806    server.allow_connections();
 807    executor.advance_clock(RECEIVE_TIMEOUT);
 808
 809    // Call user B again from client A.
 810    active_call_a
 811        .update(cx_a, |call, cx| {
 812            call.invite(client_b.user_id().unwrap(), None, cx)
 813        })
 814        .await
 815        .unwrap();
 816
 817    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 818
 819    // User B receives the call and joins the room.
 820
 821    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 822    incoming_call_b.next().await.unwrap().unwrap();
 823    active_call_b
 824        .update(cx_b, |call, cx| call.accept_incoming(cx))
 825        .await
 826        .unwrap();
 827
 828    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 829    executor.run_until_parked();
 830    assert_eq!(
 831        room_participants(&room_a, cx_a),
 832        RoomParticipants {
 833            remote: vec!["user_b".to_string()],
 834            pending: Default::default()
 835        }
 836    );
 837    assert_eq!(
 838        room_participants(&room_b, cx_b),
 839        RoomParticipants {
 840            remote: vec!["user_a".to_string()],
 841            pending: Default::default()
 842        }
 843    );
 844
 845    // User B gets disconnected from the LiveKit server, which causes it
 846    // to automatically leave the room.
 847    server
 848        .test_live_kit_server
 849        .disconnect_client(client_b.user_id().unwrap().to_string())
 850        .await;
 851    executor.run_until_parked();
 852    active_call_a.update(cx_a, |call, _| assert!(call.room().is_none()));
 853    active_call_b.update(cx_b, |call, _| assert!(call.room().is_none()));
 854    assert_eq!(
 855        room_participants(&room_a, cx_a),
 856        RoomParticipants {
 857            remote: Default::default(),
 858            pending: Default::default()
 859        }
 860    );
 861    assert_eq!(
 862        room_participants(&room_b, cx_b),
 863        RoomParticipants {
 864            remote: Default::default(),
 865            pending: Default::default()
 866        }
 867    );
 868}
 869
 870#[gpui::test(iterations = 10)]
 871async fn test_server_restarts(
 872    executor: BackgroundExecutor,
 873    cx_a: &mut TestAppContext,
 874    cx_b: &mut TestAppContext,
 875    cx_c: &mut TestAppContext,
 876    cx_d: &mut TestAppContext,
 877) {
 878    let mut server = TestServer::start(executor.clone()).await;
 879    let client_a = server.create_client(cx_a, "user_a").await;
 880    client_a
 881        .fs()
 882        .insert_tree("/a", json!({ "a.txt": "a-contents" }))
 883        .await;
 884
 885    // Invite client B to collaborate on a project
 886    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
 887
 888    let client_b = server.create_client(cx_b, "user_b").await;
 889    let client_c = server.create_client(cx_c, "user_c").await;
 890    let client_d = server.create_client(cx_d, "user_d").await;
 891    server
 892        .make_contacts(&mut [
 893            (&client_a, cx_a),
 894            (&client_b, cx_b),
 895            (&client_c, cx_c),
 896            (&client_d, cx_d),
 897        ])
 898        .await;
 899
 900    let active_call_a = cx_a.read(ActiveCall::global);
 901    let active_call_b = cx_b.read(ActiveCall::global);
 902    let active_call_c = cx_c.read(ActiveCall::global);
 903    let active_call_d = cx_d.read(ActiveCall::global);
 904
 905    // User A calls users B, C, and D.
 906    active_call_a
 907        .update(cx_a, |call, cx| {
 908            call.invite(client_b.user_id().unwrap(), Some(project_a.clone()), cx)
 909        })
 910        .await
 911        .unwrap();
 912    active_call_a
 913        .update(cx_a, |call, cx| {
 914            call.invite(client_c.user_id().unwrap(), Some(project_a.clone()), cx)
 915        })
 916        .await
 917        .unwrap();
 918    active_call_a
 919        .update(cx_a, |call, cx| {
 920            call.invite(client_d.user_id().unwrap(), Some(project_a.clone()), cx)
 921        })
 922        .await
 923        .unwrap();
 924
 925    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
 926
 927    // User B receives the call and joins the room.
 928
 929    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
 930    assert!(incoming_call_b.next().await.unwrap().is_some());
 931    active_call_b
 932        .update(cx_b, |call, cx| call.accept_incoming(cx))
 933        .await
 934        .unwrap();
 935
 936    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
 937
 938    // User C receives the call and joins the room.
 939
 940    let mut incoming_call_c = active_call_c.read_with(cx_c, |call, _| call.incoming());
 941    assert!(incoming_call_c.next().await.unwrap().is_some());
 942    active_call_c
 943        .update(cx_c, |call, cx| call.accept_incoming(cx))
 944        .await
 945        .unwrap();
 946
 947    let room_c = active_call_c.read_with(cx_c, |call, _| call.room().unwrap().clone());
 948
 949    // User D receives the call but doesn't join the room yet.
 950
 951    let mut incoming_call_d = active_call_d.read_with(cx_d, |call, _| call.incoming());
 952    assert!(incoming_call_d.next().await.unwrap().is_some());
 953
 954    executor.run_until_parked();
 955    assert_eq!(
 956        room_participants(&room_a, cx_a),
 957        RoomParticipants {
 958            remote: vec!["user_b".to_string(), "user_c".to_string()],
 959            pending: vec!["user_d".to_string()]
 960        }
 961    );
 962    assert_eq!(
 963        room_participants(&room_b, cx_b),
 964        RoomParticipants {
 965            remote: vec!["user_a".to_string(), "user_c".to_string()],
 966            pending: vec!["user_d".to_string()]
 967        }
 968    );
 969    assert_eq!(
 970        room_participants(&room_c, cx_c),
 971        RoomParticipants {
 972            remote: vec!["user_a".to_string(), "user_b".to_string()],
 973            pending: vec!["user_d".to_string()]
 974        }
 975    );
 976
 977    // The server is torn down.
 978    server.reset().await;
 979
 980    // Users A and B reconnect to the call. User C has troubles reconnecting, so it leaves the room.
 981    client_c.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
 982    executor.advance_clock(RECONNECT_TIMEOUT);
 983    assert_eq!(
 984        room_participants(&room_a, cx_a),
 985        RoomParticipants {
 986            remote: vec!["user_b".to_string(), "user_c".to_string()],
 987            pending: vec!["user_d".to_string()]
 988        }
 989    );
 990    assert_eq!(
 991        room_participants(&room_b, cx_b),
 992        RoomParticipants {
 993            remote: vec!["user_a".to_string(), "user_c".to_string()],
 994            pending: vec!["user_d".to_string()]
 995        }
 996    );
 997    assert_eq!(
 998        room_participants(&room_c, cx_c),
 999        RoomParticipants {
1000            remote: vec![],
1001            pending: vec![]
1002        }
1003    );
1004
1005    // User D is notified again of the incoming call and accepts it.
1006    assert!(incoming_call_d.next().await.unwrap().is_some());
1007    active_call_d
1008        .update(cx_d, |call, cx| call.accept_incoming(cx))
1009        .await
1010        .unwrap();
1011    executor.run_until_parked();
1012
1013    let room_d = active_call_d.read_with(cx_d, |call, _| call.room().unwrap().clone());
1014    assert_eq!(
1015        room_participants(&room_a, cx_a),
1016        RoomParticipants {
1017            remote: vec![
1018                "user_b".to_string(),
1019                "user_c".to_string(),
1020                "user_d".to_string(),
1021            ],
1022            pending: vec![]
1023        }
1024    );
1025    assert_eq!(
1026        room_participants(&room_b, cx_b),
1027        RoomParticipants {
1028            remote: vec![
1029                "user_a".to_string(),
1030                "user_c".to_string(),
1031                "user_d".to_string(),
1032            ],
1033            pending: vec![]
1034        }
1035    );
1036    assert_eq!(
1037        room_participants(&room_c, cx_c),
1038        RoomParticipants {
1039            remote: vec![],
1040            pending: vec![]
1041        }
1042    );
1043    assert_eq!(
1044        room_participants(&room_d, cx_d),
1045        RoomParticipants {
1046            remote: vec![
1047                "user_a".to_string(),
1048                "user_b".to_string(),
1049                "user_c".to_string(),
1050            ],
1051            pending: vec![]
1052        }
1053    );
1054
1055    // The server finishes restarting, cleaning up stale connections.
1056    server.start().await.unwrap();
1057    executor.advance_clock(CLEANUP_TIMEOUT);
1058    assert_eq!(
1059        room_participants(&room_a, cx_a),
1060        RoomParticipants {
1061            remote: vec!["user_b".to_string(), "user_d".to_string()],
1062            pending: vec![]
1063        }
1064    );
1065    assert_eq!(
1066        room_participants(&room_b, cx_b),
1067        RoomParticipants {
1068            remote: vec!["user_a".to_string(), "user_d".to_string()],
1069            pending: vec![]
1070        }
1071    );
1072    assert_eq!(
1073        room_participants(&room_c, cx_c),
1074        RoomParticipants {
1075            remote: vec![],
1076            pending: vec![]
1077        }
1078    );
1079    assert_eq!(
1080        room_participants(&room_d, cx_d),
1081        RoomParticipants {
1082            remote: vec!["user_a".to_string(), "user_b".to_string()],
1083            pending: vec![]
1084        }
1085    );
1086
1087    // User D hangs up.
1088    active_call_d
1089        .update(cx_d, |call, cx| call.hang_up(cx))
1090        .await
1091        .unwrap();
1092    executor.run_until_parked();
1093    assert_eq!(
1094        room_participants(&room_a, cx_a),
1095        RoomParticipants {
1096            remote: vec!["user_b".to_string()],
1097            pending: vec![]
1098        }
1099    );
1100    assert_eq!(
1101        room_participants(&room_b, cx_b),
1102        RoomParticipants {
1103            remote: vec!["user_a".to_string()],
1104            pending: vec![]
1105        }
1106    );
1107    assert_eq!(
1108        room_participants(&room_c, cx_c),
1109        RoomParticipants {
1110            remote: vec![],
1111            pending: vec![]
1112        }
1113    );
1114    assert_eq!(
1115        room_participants(&room_d, cx_d),
1116        RoomParticipants {
1117            remote: vec![],
1118            pending: vec![]
1119        }
1120    );
1121
1122    // User B calls user D again.
1123    active_call_b
1124        .update(cx_b, |call, cx| {
1125            call.invite(client_d.user_id().unwrap(), None, cx)
1126        })
1127        .await
1128        .unwrap();
1129
1130    // User D receives the call but doesn't join the room yet.
1131
1132    let mut incoming_call_d = active_call_d.read_with(cx_d, |call, _| call.incoming());
1133    assert!(incoming_call_d.next().await.unwrap().is_some());
1134    executor.run_until_parked();
1135    assert_eq!(
1136        room_participants(&room_a, cx_a),
1137        RoomParticipants {
1138            remote: vec!["user_b".to_string()],
1139            pending: vec!["user_d".to_string()]
1140        }
1141    );
1142    assert_eq!(
1143        room_participants(&room_b, cx_b),
1144        RoomParticipants {
1145            remote: vec!["user_a".to_string()],
1146            pending: vec!["user_d".to_string()]
1147        }
1148    );
1149
1150    // The server is torn down.
1151    server.reset().await;
1152
1153    // Users A and B have troubles reconnecting, so they leave the room.
1154    client_a.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
1155    client_b.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
1156    client_c.override_establish_connection(|_, cx| cx.spawn(|_| future::pending()));
1157    executor.advance_clock(RECONNECT_TIMEOUT);
1158    assert_eq!(
1159        room_participants(&room_a, cx_a),
1160        RoomParticipants {
1161            remote: vec![],
1162            pending: vec![]
1163        }
1164    );
1165    assert_eq!(
1166        room_participants(&room_b, cx_b),
1167        RoomParticipants {
1168            remote: vec![],
1169            pending: vec![]
1170        }
1171    );
1172
1173    // User D is notified again of the incoming call but doesn't accept it.
1174    assert!(incoming_call_d.next().await.unwrap().is_some());
1175
1176    // The server finishes restarting, cleaning up stale connections and canceling the
1177    // call to user D because the room has become empty.
1178    server.start().await.unwrap();
1179    executor.advance_clock(CLEANUP_TIMEOUT);
1180    assert!(incoming_call_d.next().await.unwrap().is_none());
1181}
1182
1183#[gpui::test(iterations = 10)]
1184async fn test_calls_on_multiple_connections(
1185    executor: BackgroundExecutor,
1186    cx_a: &mut TestAppContext,
1187    cx_b1: &mut TestAppContext,
1188    cx_b2: &mut TestAppContext,
1189) {
1190    let mut server = TestServer::start(executor.clone()).await;
1191    let client_a = server.create_client(cx_a, "user_a").await;
1192    let client_b1 = server.create_client(cx_b1, "user_b").await;
1193    let client_b2 = server.create_client(cx_b2, "user_b").await;
1194    server
1195        .make_contacts(&mut [(&client_a, cx_a), (&client_b1, cx_b1)])
1196        .await;
1197
1198    let active_call_a = cx_a.read(ActiveCall::global);
1199    let active_call_b1 = cx_b1.read(ActiveCall::global);
1200    let active_call_b2 = cx_b2.read(ActiveCall::global);
1201
1202    let mut incoming_call_b1 = active_call_b1.read_with(cx_b1, |call, _| call.incoming());
1203
1204    let mut incoming_call_b2 = active_call_b2.read_with(cx_b2, |call, _| call.incoming());
1205    assert!(incoming_call_b1.next().await.unwrap().is_none());
1206    assert!(incoming_call_b2.next().await.unwrap().is_none());
1207
1208    // Call user B from client A, ensuring both clients for user B ring.
1209    active_call_a
1210        .update(cx_a, |call, cx| {
1211            call.invite(client_b1.user_id().unwrap(), None, cx)
1212        })
1213        .await
1214        .unwrap();
1215    executor.run_until_parked();
1216    assert!(incoming_call_b1.next().await.unwrap().is_some());
1217    assert!(incoming_call_b2.next().await.unwrap().is_some());
1218
1219    // User B declines the call on one of the two connections, causing both connections
1220    // to stop ringing.
1221    active_call_b2.update(cx_b2, |call, cx| call.decline_incoming(cx).unwrap());
1222    executor.run_until_parked();
1223    assert!(incoming_call_b1.next().await.unwrap().is_none());
1224    assert!(incoming_call_b2.next().await.unwrap().is_none());
1225
1226    // Call user B again from client A.
1227    active_call_a
1228        .update(cx_a, |call, cx| {
1229            call.invite(client_b1.user_id().unwrap(), None, cx)
1230        })
1231        .await
1232        .unwrap();
1233    executor.run_until_parked();
1234    assert!(incoming_call_b1.next().await.unwrap().is_some());
1235    assert!(incoming_call_b2.next().await.unwrap().is_some());
1236
1237    // User B accepts the call on one of the two connections, causing both connections
1238    // to stop ringing.
1239    active_call_b2
1240        .update(cx_b2, |call, cx| call.accept_incoming(cx))
1241        .await
1242        .unwrap();
1243    executor.run_until_parked();
1244    assert!(incoming_call_b1.next().await.unwrap().is_none());
1245    assert!(incoming_call_b2.next().await.unwrap().is_none());
1246
1247    // User B disconnects the client that is not on the call. Everything should be fine.
1248    client_b1.disconnect(&cx_b1.to_async());
1249    executor.advance_clock(RECEIVE_TIMEOUT);
1250    client_b1
1251        .authenticate_and_connect(false, &cx_b1.to_async())
1252        .await
1253        .unwrap();
1254
1255    // User B hangs up, and user A calls them again.
1256    active_call_b2
1257        .update(cx_b2, |call, cx| call.hang_up(cx))
1258        .await
1259        .unwrap();
1260    executor.run_until_parked();
1261    active_call_a
1262        .update(cx_a, |call, cx| {
1263            call.invite(client_b1.user_id().unwrap(), None, cx)
1264        })
1265        .await
1266        .unwrap();
1267    executor.run_until_parked();
1268    assert!(incoming_call_b1.next().await.unwrap().is_some());
1269    assert!(incoming_call_b2.next().await.unwrap().is_some());
1270
1271    // User A cancels the call, causing both connections to stop ringing.
1272    active_call_a
1273        .update(cx_a, |call, cx| {
1274            call.cancel_invite(client_b1.user_id().unwrap(), cx)
1275        })
1276        .await
1277        .unwrap();
1278    executor.run_until_parked();
1279    assert!(incoming_call_b1.next().await.unwrap().is_none());
1280    assert!(incoming_call_b2.next().await.unwrap().is_none());
1281
1282    // User A calls user B again.
1283    active_call_a
1284        .update(cx_a, |call, cx| {
1285            call.invite(client_b1.user_id().unwrap(), None, cx)
1286        })
1287        .await
1288        .unwrap();
1289    executor.run_until_parked();
1290    assert!(incoming_call_b1.next().await.unwrap().is_some());
1291    assert!(incoming_call_b2.next().await.unwrap().is_some());
1292
1293    // User A hangs up, causing both connections to stop ringing.
1294    active_call_a
1295        .update(cx_a, |call, cx| call.hang_up(cx))
1296        .await
1297        .unwrap();
1298    executor.run_until_parked();
1299    assert!(incoming_call_b1.next().await.unwrap().is_none());
1300    assert!(incoming_call_b2.next().await.unwrap().is_none());
1301
1302    // User A calls user B again.
1303    active_call_a
1304        .update(cx_a, |call, cx| {
1305            call.invite(client_b1.user_id().unwrap(), None, cx)
1306        })
1307        .await
1308        .unwrap();
1309    executor.run_until_parked();
1310    assert!(incoming_call_b1.next().await.unwrap().is_some());
1311    assert!(incoming_call_b2.next().await.unwrap().is_some());
1312
1313    // User A disconnects, causing both connections to stop ringing.
1314    server.forbid_connections();
1315    server.disconnect_client(client_a.peer_id().unwrap());
1316    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
1317    assert!(incoming_call_b1.next().await.unwrap().is_none());
1318    assert!(incoming_call_b2.next().await.unwrap().is_none());
1319
1320    // User A reconnects automatically, then calls user B again.
1321    server.allow_connections();
1322    executor.advance_clock(RECEIVE_TIMEOUT);
1323    active_call_a
1324        .update(cx_a, |call, cx| {
1325            call.invite(client_b1.user_id().unwrap(), None, cx)
1326        })
1327        .await
1328        .unwrap();
1329    executor.run_until_parked();
1330    assert!(incoming_call_b1.next().await.unwrap().is_some());
1331    assert!(incoming_call_b2.next().await.unwrap().is_some());
1332
1333    // User B disconnects all clients, causing user A to no longer see a pending call for them.
1334    server.forbid_connections();
1335    server.disconnect_client(client_b1.peer_id().unwrap());
1336    server.disconnect_client(client_b2.peer_id().unwrap());
1337    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
1338
1339    active_call_a.read_with(cx_a, |call, _| assert!(call.room().is_none()));
1340}
1341
1342#[gpui::test(iterations = 10)]
1343async fn test_unshare_project(
1344    executor: BackgroundExecutor,
1345    cx_a: &mut TestAppContext,
1346    cx_b: &mut TestAppContext,
1347    cx_c: &mut TestAppContext,
1348) {
1349    let mut server = TestServer::start(executor.clone()).await;
1350    let client_a = server.create_client(cx_a, "user_a").await;
1351    let client_b = server.create_client(cx_b, "user_b").await;
1352    let client_c = server.create_client(cx_c, "user_c").await;
1353    server
1354        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
1355        .await;
1356
1357    let active_call_a = cx_a.read(ActiveCall::global);
1358    let active_call_b = cx_b.read(ActiveCall::global);
1359
1360    client_a
1361        .fs()
1362        .insert_tree(
1363            "/a",
1364            json!({
1365                "a.txt": "a-contents",
1366                "b.txt": "b-contents",
1367            }),
1368        )
1369        .await;
1370
1371    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
1372    let project_id = active_call_a
1373        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1374        .await
1375        .unwrap();
1376
1377    let worktree_a = project_a.read_with(cx_a, |project, _| project.worktrees().next().unwrap());
1378    let project_b = client_b.build_remote_project(project_id, cx_b).await;
1379    executor.run_until_parked();
1380
1381    assert!(worktree_a.read_with(cx_a, |tree, _| tree.as_local().unwrap().is_shared()));
1382
1383    project_b
1384        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
1385        .await
1386        .unwrap();
1387
1388    // When client B leaves the room, the project becomes read-only.
1389    active_call_b
1390        .update(cx_b, |call, cx| call.hang_up(cx))
1391        .await
1392        .unwrap();
1393    executor.run_until_parked();
1394
1395    assert!(project_b.read_with(cx_b, |project, _| project.is_disconnected()));
1396
1397    // Client C opens the project.
1398    let project_c = client_c.build_remote_project(project_id, cx_c).await;
1399
1400    // When client A unshares the project, client C's project becomes read-only.
1401    project_a
1402        .update(cx_a, |project, cx| project.unshare(cx))
1403        .unwrap();
1404    executor.run_until_parked();
1405
1406    assert!(worktree_a.read_with(cx_a, |tree, _| !tree.as_local().unwrap().is_shared()));
1407
1408    assert!(project_c.read_with(cx_c, |project, _| project.is_disconnected()));
1409
1410    // Client C can open the project again after client A re-shares.
1411    let project_id = active_call_a
1412        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1413        .await
1414        .unwrap();
1415    let project_c2 = client_c.build_remote_project(project_id, cx_c).await;
1416    executor.run_until_parked();
1417
1418    assert!(worktree_a.read_with(cx_a, |tree, _| tree.as_local().unwrap().is_shared()));
1419    project_c2
1420        .update(cx_c, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
1421        .await
1422        .unwrap();
1423
1424    // When client A (the host) leaves the room, the project gets unshared and guests are notified.
1425    active_call_a
1426        .update(cx_a, |call, cx| call.hang_up(cx))
1427        .await
1428        .unwrap();
1429    executor.run_until_parked();
1430
1431    project_a.read_with(cx_a, |project, _| assert!(!project.is_shared()));
1432
1433    project_c2.read_with(cx_c, |project, _| {
1434        assert!(project.is_disconnected());
1435        assert!(project.collaborators().is_empty());
1436    });
1437}
1438
1439#[gpui::test(iterations = 10)]
1440async fn test_project_reconnect(
1441    executor: BackgroundExecutor,
1442    cx_a: &mut TestAppContext,
1443    cx_b: &mut TestAppContext,
1444) {
1445    let mut server = TestServer::start(executor.clone()).await;
1446    let client_a = server.create_client(cx_a, "user_a").await;
1447    let client_b = server.create_client(cx_b, "user_b").await;
1448    server
1449        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
1450        .await;
1451
1452    cx_b.update(editor::init);
1453
1454    client_a
1455        .fs()
1456        .insert_tree(
1457            "/root-1",
1458            json!({
1459                "dir1": {
1460                    "a.txt": "a",
1461                    "b.txt": "b",
1462                    "subdir1": {
1463                        "c.txt": "c",
1464                        "d.txt": "d",
1465                        "e.txt": "e",
1466                    }
1467                },
1468                "dir2": {
1469                    "v.txt": "v",
1470                },
1471                "dir3": {
1472                    "w.txt": "w",
1473                    "x.txt": "x",
1474                    "y.txt": "y",
1475                },
1476                "dir4": {
1477                    "z.txt": "z",
1478                },
1479            }),
1480        )
1481        .await;
1482    client_a
1483        .fs()
1484        .insert_tree(
1485            "/root-2",
1486            json!({
1487                "2.txt": "2",
1488            }),
1489        )
1490        .await;
1491    client_a
1492        .fs()
1493        .insert_tree(
1494            "/root-3",
1495            json!({
1496                "3.txt": "3",
1497            }),
1498        )
1499        .await;
1500
1501    let active_call_a = cx_a.read(ActiveCall::global);
1502    let (project_a1, _) = client_a.build_local_project("/root-1/dir1", cx_a).await;
1503    let (project_a2, _) = client_a.build_local_project("/root-2", cx_a).await;
1504    let (project_a3, _) = client_a.build_local_project("/root-3", cx_a).await;
1505    let worktree_a1 = project_a1.read_with(cx_a, |project, _| project.worktrees().next().unwrap());
1506    let project1_id = active_call_a
1507        .update(cx_a, |call, cx| call.share_project(project_a1.clone(), cx))
1508        .await
1509        .unwrap();
1510    let project2_id = active_call_a
1511        .update(cx_a, |call, cx| call.share_project(project_a2.clone(), cx))
1512        .await
1513        .unwrap();
1514    let project3_id = active_call_a
1515        .update(cx_a, |call, cx| call.share_project(project_a3.clone(), cx))
1516        .await
1517        .unwrap();
1518
1519    let project_b1 = client_b.build_remote_project(project1_id, cx_b).await;
1520    let project_b2 = client_b.build_remote_project(project2_id, cx_b).await;
1521    let project_b3 = client_b.build_remote_project(project3_id, cx_b).await;
1522    executor.run_until_parked();
1523
1524    let worktree1_id = worktree_a1.read_with(cx_a, |worktree, _| {
1525        assert!(worktree.as_local().unwrap().is_shared());
1526        worktree.id()
1527    });
1528    let (worktree_a2, _) = project_a1
1529        .update(cx_a, |p, cx| {
1530            p.find_or_create_local_worktree("/root-1/dir2", true, cx)
1531        })
1532        .await
1533        .unwrap();
1534    executor.run_until_parked();
1535
1536    let worktree2_id = worktree_a2.read_with(cx_a, |tree, _| {
1537        assert!(tree.as_local().unwrap().is_shared());
1538        tree.id()
1539    });
1540    executor.run_until_parked();
1541
1542    project_b1.read_with(cx_b, |project, cx| {
1543        assert!(project.worktree_for_id(worktree2_id, cx).is_some())
1544    });
1545
1546    let buffer_a1 = project_a1
1547        .update(cx_a, |p, cx| p.open_buffer((worktree1_id, "a.txt"), cx))
1548        .await
1549        .unwrap();
1550    let buffer_b1 = project_b1
1551        .update(cx_b, |p, cx| p.open_buffer((worktree1_id, "a.txt"), cx))
1552        .await
1553        .unwrap();
1554
1555    // Drop client A's connection.
1556    server.forbid_connections();
1557    server.disconnect_client(client_a.peer_id().unwrap());
1558    executor.advance_clock(RECEIVE_TIMEOUT);
1559
1560    project_a1.read_with(cx_a, |project, _| {
1561        assert!(project.is_shared());
1562        assert_eq!(project.collaborators().len(), 1);
1563    });
1564
1565    project_b1.read_with(cx_b, |project, _| {
1566        assert!(!project.is_disconnected());
1567        assert_eq!(project.collaborators().len(), 1);
1568    });
1569
1570    worktree_a1.read_with(cx_a, |tree, _| {
1571        assert!(tree.as_local().unwrap().is_shared())
1572    });
1573
1574    // While client A is disconnected, add and remove files from client A's project.
1575    client_a
1576        .fs()
1577        .insert_tree(
1578            "/root-1/dir1/subdir2",
1579            json!({
1580                "f.txt": "f-contents",
1581                "g.txt": "g-contents",
1582                "h.txt": "h-contents",
1583                "i.txt": "i-contents",
1584            }),
1585        )
1586        .await;
1587    client_a
1588        .fs()
1589        .remove_dir(
1590            "/root-1/dir1/subdir1".as_ref(),
1591            RemoveOptions {
1592                recursive: true,
1593                ..Default::default()
1594            },
1595        )
1596        .await
1597        .unwrap();
1598
1599    // While client A is disconnected, add and remove worktrees from client A's project.
1600    project_a1.update(cx_a, |project, cx| {
1601        project.remove_worktree(worktree2_id, cx)
1602    });
1603    let (worktree_a3, _) = project_a1
1604        .update(cx_a, |p, cx| {
1605            p.find_or_create_local_worktree("/root-1/dir3", true, cx)
1606        })
1607        .await
1608        .unwrap();
1609    worktree_a3
1610        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
1611        .await;
1612
1613    let worktree3_id = worktree_a3.read_with(cx_a, |tree, _| {
1614        assert!(!tree.as_local().unwrap().is_shared());
1615        tree.id()
1616    });
1617    executor.run_until_parked();
1618
1619    // While client A is disconnected, close project 2
1620    cx_a.update(|_| drop(project_a2));
1621
1622    // While client A is disconnected, mutate a buffer on both the host and the guest.
1623    buffer_a1.update(cx_a, |buf, cx| buf.edit([(0..0, "W")], None, cx));
1624    buffer_b1.update(cx_b, |buf, cx| buf.edit([(1..1, "Z")], None, cx));
1625    executor.run_until_parked();
1626
1627    // Client A reconnects. Their project is re-shared, and client B re-joins it.
1628    server.allow_connections();
1629    client_a
1630        .authenticate_and_connect(false, &cx_a.to_async())
1631        .await
1632        .unwrap();
1633    executor.run_until_parked();
1634
1635    project_a1.read_with(cx_a, |project, cx| {
1636        assert!(project.is_shared());
1637        assert!(worktree_a1.read(cx).as_local().unwrap().is_shared());
1638        assert_eq!(
1639            worktree_a1
1640                .read(cx)
1641                .snapshot()
1642                .paths()
1643                .map(|p| p.to_str().unwrap())
1644                .collect::<Vec<_>>(),
1645            vec![
1646                "a.txt",
1647                "b.txt",
1648                "subdir2",
1649                "subdir2/f.txt",
1650                "subdir2/g.txt",
1651                "subdir2/h.txt",
1652                "subdir2/i.txt"
1653            ]
1654        );
1655        assert!(worktree_a3.read(cx).as_local().unwrap().is_shared());
1656        assert_eq!(
1657            worktree_a3
1658                .read(cx)
1659                .snapshot()
1660                .paths()
1661                .map(|p| p.to_str().unwrap())
1662                .collect::<Vec<_>>(),
1663            vec!["w.txt", "x.txt", "y.txt"]
1664        );
1665    });
1666
1667    project_b1.read_with(cx_b, |project, cx| {
1668        assert!(!project.is_disconnected());
1669        assert_eq!(
1670            project
1671                .worktree_for_id(worktree1_id, cx)
1672                .unwrap()
1673                .read(cx)
1674                .snapshot()
1675                .paths()
1676                .map(|p| p.to_str().unwrap())
1677                .collect::<Vec<_>>(),
1678            vec![
1679                "a.txt",
1680                "b.txt",
1681                "subdir2",
1682                "subdir2/f.txt",
1683                "subdir2/g.txt",
1684                "subdir2/h.txt",
1685                "subdir2/i.txt"
1686            ]
1687        );
1688        assert!(project.worktree_for_id(worktree2_id, cx).is_none());
1689        assert_eq!(
1690            project
1691                .worktree_for_id(worktree3_id, cx)
1692                .unwrap()
1693                .read(cx)
1694                .snapshot()
1695                .paths()
1696                .map(|p| p.to_str().unwrap())
1697                .collect::<Vec<_>>(),
1698            vec!["w.txt", "x.txt", "y.txt"]
1699        );
1700    });
1701
1702    project_b2.read_with(cx_b, |project, _| assert!(project.is_disconnected()));
1703
1704    project_b3.read_with(cx_b, |project, _| assert!(!project.is_disconnected()));
1705
1706    buffer_a1.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "WaZ"));
1707
1708    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "WaZ"));
1709
1710    // Drop client B's connection.
1711    server.forbid_connections();
1712    server.disconnect_client(client_b.peer_id().unwrap());
1713    executor.advance_clock(RECEIVE_TIMEOUT);
1714
1715    // While client B is disconnected, add and remove files from client A's project
1716    client_a
1717        .fs()
1718        .insert_file("/root-1/dir1/subdir2/j.txt", "j-contents".into())
1719        .await;
1720    client_a
1721        .fs()
1722        .remove_file("/root-1/dir1/subdir2/i.txt".as_ref(), Default::default())
1723        .await
1724        .unwrap();
1725
1726    // While client B is disconnected, add and remove worktrees from client A's project.
1727    let (worktree_a4, _) = project_a1
1728        .update(cx_a, |p, cx| {
1729            p.find_or_create_local_worktree("/root-1/dir4", true, cx)
1730        })
1731        .await
1732        .unwrap();
1733    executor.run_until_parked();
1734
1735    let worktree4_id = worktree_a4.read_with(cx_a, |tree, _| {
1736        assert!(tree.as_local().unwrap().is_shared());
1737        tree.id()
1738    });
1739    project_a1.update(cx_a, |project, cx| {
1740        project.remove_worktree(worktree3_id, cx)
1741    });
1742    executor.run_until_parked();
1743
1744    // While client B is disconnected, mutate a buffer on both the host and the guest.
1745    buffer_a1.update(cx_a, |buf, cx| buf.edit([(1..1, "X")], None, cx));
1746    buffer_b1.update(cx_b, |buf, cx| buf.edit([(2..2, "Y")], None, cx));
1747    executor.run_until_parked();
1748
1749    // While disconnected, close project 3
1750    cx_a.update(|_| drop(project_a3));
1751
1752    // Client B reconnects. They re-join the room and the remaining shared project.
1753    server.allow_connections();
1754    client_b
1755        .authenticate_and_connect(false, &cx_b.to_async())
1756        .await
1757        .unwrap();
1758    executor.run_until_parked();
1759
1760    project_b1.read_with(cx_b, |project, cx| {
1761        assert!(!project.is_disconnected());
1762        assert_eq!(
1763            project
1764                .worktree_for_id(worktree1_id, cx)
1765                .unwrap()
1766                .read(cx)
1767                .snapshot()
1768                .paths()
1769                .map(|p| p.to_str().unwrap())
1770                .collect::<Vec<_>>(),
1771            vec![
1772                "a.txt",
1773                "b.txt",
1774                "subdir2",
1775                "subdir2/f.txt",
1776                "subdir2/g.txt",
1777                "subdir2/h.txt",
1778                "subdir2/j.txt"
1779            ]
1780        );
1781        assert!(project.worktree_for_id(worktree2_id, cx).is_none());
1782        assert_eq!(
1783            project
1784                .worktree_for_id(worktree4_id, cx)
1785                .unwrap()
1786                .read(cx)
1787                .snapshot()
1788                .paths()
1789                .map(|p| p.to_str().unwrap())
1790                .collect::<Vec<_>>(),
1791            vec!["z.txt"]
1792        );
1793    });
1794
1795    project_b3.read_with(cx_b, |project, _| assert!(project.is_disconnected()));
1796
1797    buffer_a1.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "WXaYZ"));
1798
1799    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "WXaYZ"));
1800}
1801
1802#[gpui::test(iterations = 10)]
1803async fn test_active_call_events(
1804    executor: BackgroundExecutor,
1805    cx_a: &mut TestAppContext,
1806    cx_b: &mut TestAppContext,
1807) {
1808    let mut server = TestServer::start(executor.clone()).await;
1809    let client_a = server.create_client(cx_a, "user_a").await;
1810    let client_b = server.create_client(cx_b, "user_b").await;
1811    client_a.fs().insert_tree("/a", json!({})).await;
1812    client_b.fs().insert_tree("/b", json!({})).await;
1813
1814    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
1815    let (project_b, _) = client_b.build_local_project("/b", cx_b).await;
1816
1817    server
1818        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
1819        .await;
1820    let active_call_a = cx_a.read(ActiveCall::global);
1821    let active_call_b = cx_b.read(ActiveCall::global);
1822
1823    let events_a = active_call_events(cx_a);
1824    let events_b = active_call_events(cx_b);
1825
1826    let project_a_id = active_call_a
1827        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
1828        .await
1829        .unwrap();
1830    executor.run_until_parked();
1831    assert_eq!(mem::take(&mut *events_a.borrow_mut()), vec![]);
1832    assert_eq!(
1833        mem::take(&mut *events_b.borrow_mut()),
1834        vec![room::Event::RemoteProjectShared {
1835            owner: Arc::new(User {
1836                id: client_a.user_id().unwrap(),
1837                github_login: "user_a".to_string(),
1838                avatar_uri: "avatar_a".into(),
1839            }),
1840            project_id: project_a_id,
1841            worktree_root_names: vec!["a".to_string()],
1842        }]
1843    );
1844
1845    let project_b_id = active_call_b
1846        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
1847        .await
1848        .unwrap();
1849    executor.run_until_parked();
1850    assert_eq!(
1851        mem::take(&mut *events_a.borrow_mut()),
1852        vec![room::Event::RemoteProjectShared {
1853            owner: Arc::new(User {
1854                id: client_b.user_id().unwrap(),
1855                github_login: "user_b".to_string(),
1856                avatar_uri: "avatar_b".into(),
1857            }),
1858            project_id: project_b_id,
1859            worktree_root_names: vec!["b".to_string()]
1860        }]
1861    );
1862    assert_eq!(mem::take(&mut *events_b.borrow_mut()), vec![]);
1863
1864    // Sharing a project twice is idempotent.
1865    let project_b_id_2 = active_call_b
1866        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
1867        .await
1868        .unwrap();
1869    assert_eq!(project_b_id_2, project_b_id);
1870    executor.run_until_parked();
1871    assert_eq!(mem::take(&mut *events_a.borrow_mut()), vec![]);
1872    assert_eq!(mem::take(&mut *events_b.borrow_mut()), vec![]);
1873
1874    // Unsharing a project should dispatch the RemoteProjectUnshared event.
1875    active_call_a
1876        .update(cx_a, |call, cx| call.hang_up(cx))
1877        .await
1878        .unwrap();
1879    executor.run_until_parked();
1880
1881    assert_eq!(
1882        mem::take(&mut *events_a.borrow_mut()),
1883        vec![room::Event::RoomLeft { channel_id: None }]
1884    );
1885    assert_eq!(
1886        mem::take(&mut *events_b.borrow_mut()),
1887        vec![room::Event::RemoteProjectUnshared {
1888            project_id: project_a_id,
1889        }]
1890    );
1891}
1892
1893fn active_call_events(cx: &mut TestAppContext) -> Rc<RefCell<Vec<room::Event>>> {
1894    let events = Rc::new(RefCell::new(Vec::new()));
1895    let active_call = cx.read(ActiveCall::global);
1896    cx.update({
1897        let events = events.clone();
1898        |cx| {
1899            cx.subscribe(&active_call, move |_, event, _| {
1900                events.borrow_mut().push(event.clone())
1901            })
1902            .detach()
1903        }
1904    });
1905    events
1906}
1907
1908#[gpui::test]
1909async fn test_mute_deafen(
1910    executor: BackgroundExecutor,
1911    cx_a: &mut TestAppContext,
1912    cx_b: &mut TestAppContext,
1913    cx_c: &mut TestAppContext,
1914) {
1915    let mut server = TestServer::start(executor.clone()).await;
1916    let client_a = server.create_client(cx_a, "user_a").await;
1917    let client_b = server.create_client(cx_b, "user_b").await;
1918    let client_c = server.create_client(cx_c, "user_c").await;
1919
1920    server
1921        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
1922        .await;
1923
1924    let active_call_a = cx_a.read(ActiveCall::global);
1925    let active_call_b = cx_b.read(ActiveCall::global);
1926    let active_call_c = cx_c.read(ActiveCall::global);
1927
1928    // User A calls user B, B answers.
1929    active_call_a
1930        .update(cx_a, |call, cx| {
1931            call.invite(client_b.user_id().unwrap(), None, cx)
1932        })
1933        .await
1934        .unwrap();
1935    executor.run_until_parked();
1936    active_call_b
1937        .update(cx_b, |call, cx| call.accept_incoming(cx))
1938        .await
1939        .unwrap();
1940    executor.run_until_parked();
1941
1942    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
1943    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
1944
1945    room_a.read_with(cx_a, |room, _| assert!(!room.is_muted()));
1946    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
1947
1948    // Users A and B are both muted.
1949    assert_eq!(
1950        participant_audio_state(&room_a, cx_a),
1951        &[ParticipantAudioState {
1952            user_id: client_b.user_id().unwrap(),
1953            is_muted: false,
1954            audio_tracks_playing: vec![true],
1955        }]
1956    );
1957    assert_eq!(
1958        participant_audio_state(&room_b, cx_b),
1959        &[ParticipantAudioState {
1960            user_id: client_a.user_id().unwrap(),
1961            is_muted: false,
1962            audio_tracks_playing: vec![true],
1963        }]
1964    );
1965
1966    // User A mutes
1967    room_a.update(cx_a, |room, cx| room.toggle_mute(cx));
1968    executor.run_until_parked();
1969
1970    // User A hears user B, but B doesn't hear A.
1971    room_a.read_with(cx_a, |room, _| assert!(room.is_muted()));
1972    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
1973    assert_eq!(
1974        participant_audio_state(&room_a, cx_a),
1975        &[ParticipantAudioState {
1976            user_id: client_b.user_id().unwrap(),
1977            is_muted: false,
1978            audio_tracks_playing: vec![true],
1979        }]
1980    );
1981    assert_eq!(
1982        participant_audio_state(&room_b, cx_b),
1983        &[ParticipantAudioState {
1984            user_id: client_a.user_id().unwrap(),
1985            is_muted: true,
1986            audio_tracks_playing: vec![true],
1987        }]
1988    );
1989
1990    // User A deafens
1991    room_a.update(cx_a, |room, cx| room.toggle_deafen(cx));
1992    executor.run_until_parked();
1993
1994    // User A does not hear user B.
1995    room_a.read_with(cx_a, |room, _| assert!(room.is_muted()));
1996    room_b.read_with(cx_b, |room, _| assert!(!room.is_muted()));
1997    assert_eq!(
1998        participant_audio_state(&room_a, cx_a),
1999        &[ParticipantAudioState {
2000            user_id: client_b.user_id().unwrap(),
2001            is_muted: false,
2002            audio_tracks_playing: vec![false],
2003        }]
2004    );
2005    assert_eq!(
2006        participant_audio_state(&room_b, cx_b),
2007        &[ParticipantAudioState {
2008            user_id: client_a.user_id().unwrap(),
2009            is_muted: true,
2010            audio_tracks_playing: vec![true],
2011        }]
2012    );
2013
2014    // User B calls user C, C joins.
2015    active_call_b
2016        .update(cx_b, |call, cx| {
2017            call.invite(client_c.user_id().unwrap(), None, cx)
2018        })
2019        .await
2020        .unwrap();
2021    executor.run_until_parked();
2022    active_call_c
2023        .update(cx_c, |call, cx| call.accept_incoming(cx))
2024        .await
2025        .unwrap();
2026    executor.run_until_parked();
2027
2028    // User A does not hear users B or C.
2029    assert_eq!(
2030        participant_audio_state(&room_a, cx_a),
2031        &[
2032            ParticipantAudioState {
2033                user_id: client_b.user_id().unwrap(),
2034                is_muted: false,
2035                audio_tracks_playing: vec![false],
2036            },
2037            ParticipantAudioState {
2038                user_id: client_c.user_id().unwrap(),
2039                is_muted: false,
2040                audio_tracks_playing: vec![false],
2041            }
2042        ]
2043    );
2044    assert_eq!(
2045        participant_audio_state(&room_b, cx_b),
2046        &[
2047            ParticipantAudioState {
2048                user_id: client_a.user_id().unwrap(),
2049                is_muted: true,
2050                audio_tracks_playing: vec![true],
2051            },
2052            ParticipantAudioState {
2053                user_id: client_c.user_id().unwrap(),
2054                is_muted: false,
2055                audio_tracks_playing: vec![true],
2056            }
2057        ]
2058    );
2059
2060    #[derive(PartialEq, Eq, Debug)]
2061    struct ParticipantAudioState {
2062        user_id: u64,
2063        is_muted: bool,
2064        audio_tracks_playing: Vec<bool>,
2065    }
2066
2067    fn participant_audio_state(
2068        room: &Model<Room>,
2069        cx: &TestAppContext,
2070    ) -> Vec<ParticipantAudioState> {
2071        room.read_with(cx, |room, _| {
2072            room.remote_participants()
2073                .iter()
2074                .map(|(user_id, participant)| ParticipantAudioState {
2075                    user_id: *user_id,
2076                    is_muted: participant.muted,
2077                    audio_tracks_playing: participant
2078                        .audio_tracks
2079                        .values()
2080                        .map(|track| track.is_playing())
2081                        .collect(),
2082                })
2083                .collect::<Vec<_>>()
2084        })
2085    }
2086}
2087
2088#[gpui::test(iterations = 10)]
2089async fn test_room_location(
2090    executor: BackgroundExecutor,
2091    cx_a: &mut TestAppContext,
2092    cx_b: &mut TestAppContext,
2093) {
2094    let mut server = TestServer::start(executor.clone()).await;
2095    let client_a = server.create_client(cx_a, "user_a").await;
2096    let client_b = server.create_client(cx_b, "user_b").await;
2097    client_a.fs().insert_tree("/a", json!({})).await;
2098    client_b.fs().insert_tree("/b", json!({})).await;
2099
2100    let active_call_a = cx_a.read(ActiveCall::global);
2101    let active_call_b = cx_b.read(ActiveCall::global);
2102
2103    let a_notified = Rc::new(Cell::new(false));
2104    cx_a.update({
2105        let notified = a_notified.clone();
2106        |cx| {
2107            cx.observe(&active_call_a, move |_, _| notified.set(true))
2108                .detach()
2109        }
2110    });
2111
2112    let b_notified = Rc::new(Cell::new(false));
2113    cx_b.update({
2114        let b_notified = b_notified.clone();
2115        |cx| {
2116            cx.observe(&active_call_b, move |_, _| b_notified.set(true))
2117                .detach()
2118        }
2119    });
2120
2121    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
2122    active_call_a
2123        .update(cx_a, |call, cx| call.set_location(Some(&project_a), cx))
2124        .await
2125        .unwrap();
2126    let (project_b, _) = client_b.build_local_project("/b", cx_b).await;
2127
2128    server
2129        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
2130        .await;
2131
2132    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
2133
2134    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
2135    executor.run_until_parked();
2136    assert!(a_notified.take());
2137    assert_eq!(
2138        participant_locations(&room_a, cx_a),
2139        vec![("user_b".to_string(), ParticipantLocation::External)]
2140    );
2141    assert!(b_notified.take());
2142    assert_eq!(
2143        participant_locations(&room_b, cx_b),
2144        vec![("user_a".to_string(), ParticipantLocation::UnsharedProject)]
2145    );
2146
2147    let project_a_id = active_call_a
2148        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
2149        .await
2150        .unwrap();
2151    executor.run_until_parked();
2152    assert!(a_notified.take());
2153    assert_eq!(
2154        participant_locations(&room_a, cx_a),
2155        vec![("user_b".to_string(), ParticipantLocation::External)]
2156    );
2157    assert!(b_notified.take());
2158    assert_eq!(
2159        participant_locations(&room_b, cx_b),
2160        vec![(
2161            "user_a".to_string(),
2162            ParticipantLocation::SharedProject {
2163                project_id: project_a_id
2164            }
2165        )]
2166    );
2167
2168    let project_b_id = active_call_b
2169        .update(cx_b, |call, cx| call.share_project(project_b.clone(), cx))
2170        .await
2171        .unwrap();
2172    executor.run_until_parked();
2173    assert!(a_notified.take());
2174    assert_eq!(
2175        participant_locations(&room_a, cx_a),
2176        vec![("user_b".to_string(), ParticipantLocation::External)]
2177    );
2178    assert!(b_notified.take());
2179    assert_eq!(
2180        participant_locations(&room_b, cx_b),
2181        vec![(
2182            "user_a".to_string(),
2183            ParticipantLocation::SharedProject {
2184                project_id: project_a_id
2185            }
2186        )]
2187    );
2188
2189    active_call_b
2190        .update(cx_b, |call, cx| call.set_location(Some(&project_b), cx))
2191        .await
2192        .unwrap();
2193    executor.run_until_parked();
2194    assert!(a_notified.take());
2195    assert_eq!(
2196        participant_locations(&room_a, cx_a),
2197        vec![(
2198            "user_b".to_string(),
2199            ParticipantLocation::SharedProject {
2200                project_id: project_b_id
2201            }
2202        )]
2203    );
2204    assert!(b_notified.take());
2205    assert_eq!(
2206        participant_locations(&room_b, cx_b),
2207        vec![(
2208            "user_a".to_string(),
2209            ParticipantLocation::SharedProject {
2210                project_id: project_a_id
2211            }
2212        )]
2213    );
2214
2215    active_call_b
2216        .update(cx_b, |call, cx| call.set_location(None, cx))
2217        .await
2218        .unwrap();
2219    executor.run_until_parked();
2220    assert!(a_notified.take());
2221    assert_eq!(
2222        participant_locations(&room_a, cx_a),
2223        vec![("user_b".to_string(), ParticipantLocation::External)]
2224    );
2225    assert!(b_notified.take());
2226    assert_eq!(
2227        participant_locations(&room_b, cx_b),
2228        vec![(
2229            "user_a".to_string(),
2230            ParticipantLocation::SharedProject {
2231                project_id: project_a_id
2232            }
2233        )]
2234    );
2235
2236    fn participant_locations(
2237        room: &Model<Room>,
2238        cx: &TestAppContext,
2239    ) -> Vec<(String, ParticipantLocation)> {
2240        room.read_with(cx, |room, _| {
2241            room.remote_participants()
2242                .values()
2243                .map(|participant| {
2244                    (
2245                        participant.user.github_login.to_string(),
2246                        participant.location,
2247                    )
2248                })
2249                .collect()
2250        })
2251    }
2252}
2253
2254#[gpui::test(iterations = 10)]
2255async fn test_propagate_saves_and_fs_changes(
2256    executor: BackgroundExecutor,
2257    cx_a: &mut TestAppContext,
2258    cx_b: &mut TestAppContext,
2259    cx_c: &mut TestAppContext,
2260) {
2261    let mut server = TestServer::start(executor.clone()).await;
2262    let client_a = server.create_client(cx_a, "user_a").await;
2263    let client_b = server.create_client(cx_b, "user_b").await;
2264    let client_c = server.create_client(cx_c, "user_c").await;
2265
2266    server
2267        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2268        .await;
2269    let active_call_a = cx_a.read(ActiveCall::global);
2270
2271    let rust = Arc::new(Language::new(
2272        LanguageConfig {
2273            name: "Rust".into(),
2274            matcher: LanguageMatcher {
2275                path_suffixes: vec!["rs".to_string()],
2276                ..Default::default()
2277            },
2278            ..Default::default()
2279        },
2280        Some(tree_sitter_rust::language()),
2281    ));
2282    let javascript = Arc::new(Language::new(
2283        LanguageConfig {
2284            name: "JavaScript".into(),
2285            matcher: LanguageMatcher {
2286                path_suffixes: vec!["js".to_string()],
2287                ..Default::default()
2288            },
2289            ..Default::default()
2290        },
2291        Some(tree_sitter_rust::language()),
2292    ));
2293    for client in [&client_a, &client_b, &client_c] {
2294        client.language_registry().add(rust.clone());
2295        client.language_registry().add(javascript.clone());
2296    }
2297
2298    client_a
2299        .fs()
2300        .insert_tree(
2301            "/a",
2302            json!({
2303                "file1.rs": "",
2304                "file2": ""
2305            }),
2306        )
2307        .await;
2308    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
2309
2310    let worktree_a = project_a.read_with(cx_a, |p, _| p.worktrees().next().unwrap());
2311    let project_id = active_call_a
2312        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
2313        .await
2314        .unwrap();
2315
2316    // Join that worktree as clients B and C.
2317    let project_b = client_b.build_remote_project(project_id, cx_b).await;
2318    let project_c = client_c.build_remote_project(project_id, cx_c).await;
2319
2320    let worktree_b = project_b.read_with(cx_b, |p, _| p.worktrees().next().unwrap());
2321
2322    let worktree_c = project_c.read_with(cx_c, |p, _| p.worktrees().next().unwrap());
2323
2324    // Open and edit a buffer as both guests B and C.
2325    let buffer_b = project_b
2326        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2327        .await
2328        .unwrap();
2329    let buffer_c = project_c
2330        .update(cx_c, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2331        .await
2332        .unwrap();
2333
2334    buffer_b.read_with(cx_b, |buffer, _| {
2335        assert_eq!(&*buffer.language().unwrap().name(), "Rust");
2336    });
2337
2338    buffer_c.read_with(cx_c, |buffer, _| {
2339        assert_eq!(&*buffer.language().unwrap().name(), "Rust");
2340    });
2341    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "i-am-b, ")], None, cx));
2342    buffer_c.update(cx_c, |buf, cx| buf.edit([(0..0, "i-am-c, ")], None, cx));
2343
2344    // Open and edit that buffer as the host.
2345    let buffer_a = project_a
2346        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "file1.rs"), cx))
2347        .await
2348        .unwrap();
2349
2350    executor.run_until_parked();
2351
2352    buffer_a.read_with(cx_a, |buf, _| assert_eq!(buf.text(), "i-am-c, i-am-b, "));
2353    buffer_a.update(cx_a, |buf, cx| {
2354        buf.edit([(buf.len()..buf.len(), "i-am-a")], None, cx)
2355    });
2356
2357    executor.run_until_parked();
2358
2359    buffer_a.read_with(cx_a, |buf, _| {
2360        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2361    });
2362
2363    buffer_b.read_with(cx_b, |buf, _| {
2364        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2365    });
2366
2367    buffer_c.read_with(cx_c, |buf, _| {
2368        assert_eq!(buf.text(), "i-am-c, i-am-b, i-am-a");
2369    });
2370
2371    // Edit the buffer as the host and concurrently save as guest B.
2372    let save_b = project_b.update(cx_b, |project, cx| {
2373        project.save_buffer(buffer_b.clone(), cx)
2374    });
2375    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "hi-a, ")], None, cx));
2376    save_b.await.unwrap();
2377    assert_eq!(
2378        client_a.fs().load("/a/file1.rs".as_ref()).await.unwrap(),
2379        "hi-a, i-am-c, i-am-b, i-am-a"
2380    );
2381
2382    executor.run_until_parked();
2383
2384    buffer_a.read_with(cx_a, |buf, _| assert!(!buf.is_dirty()));
2385
2386    buffer_b.read_with(cx_b, |buf, _| assert!(!buf.is_dirty()));
2387
2388    buffer_c.read_with(cx_c, |buf, _| assert!(!buf.is_dirty()));
2389
2390    // Make changes on host's file system, see those changes on guest worktrees.
2391    client_a
2392        .fs()
2393        .rename(
2394            "/a/file1.rs".as_ref(),
2395            "/a/file1.js".as_ref(),
2396            Default::default(),
2397        )
2398        .await
2399        .unwrap();
2400    client_a
2401        .fs()
2402        .rename("/a/file2".as_ref(), "/a/file3".as_ref(), Default::default())
2403        .await
2404        .unwrap();
2405    client_a.fs().insert_file("/a/file4", "4".into()).await;
2406    executor.run_until_parked();
2407
2408    worktree_a.read_with(cx_a, |tree, _| {
2409        assert_eq!(
2410            tree.paths()
2411                .map(|p| p.to_string_lossy())
2412                .collect::<Vec<_>>(),
2413            ["file1.js", "file3", "file4"]
2414        )
2415    });
2416
2417    worktree_b.read_with(cx_b, |tree, _| {
2418        assert_eq!(
2419            tree.paths()
2420                .map(|p| p.to_string_lossy())
2421                .collect::<Vec<_>>(),
2422            ["file1.js", "file3", "file4"]
2423        )
2424    });
2425
2426    worktree_c.read_with(cx_c, |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    // Ensure buffer files are updated as well.
2436
2437    buffer_a.read_with(cx_a, |buffer, _| {
2438        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2439        assert_eq!(&*buffer.language().unwrap().name(), "JavaScript");
2440    });
2441
2442    buffer_b.read_with(cx_b, |buffer, _| {
2443        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2444        assert_eq!(&*buffer.language().unwrap().name(), "JavaScript");
2445    });
2446
2447    buffer_c.read_with(cx_c, |buffer, _| {
2448        assert_eq!(buffer.file().unwrap().path().to_str(), Some("file1.js"));
2449        assert_eq!(&*buffer.language().unwrap().name(), "JavaScript");
2450    });
2451
2452    let new_buffer_a = project_a
2453        .update(cx_a, |p, cx| p.create_buffer(cx))
2454        .await
2455        .unwrap();
2456
2457    let new_buffer_id = new_buffer_a.read_with(cx_a, |buffer, _| buffer.remote_id());
2458    let new_buffer_b = project_b
2459        .update(cx_b, |p, cx| p.open_buffer_by_id(new_buffer_id, cx))
2460        .await
2461        .unwrap();
2462
2463    new_buffer_b.read_with(cx_b, |buffer, _| {
2464        assert!(buffer.file().is_none());
2465    });
2466
2467    new_buffer_a.update(cx_a, |buffer, cx| {
2468        buffer.edit([(0..0, "ok")], None, cx);
2469    });
2470    project_a
2471        .update(cx_a, |project, cx| {
2472            let path = ProjectPath {
2473                path: Arc::from(Path::new("file3.rs")),
2474                worktree_id: worktree_a.read(cx).id(),
2475            };
2476
2477            project.save_buffer_as(new_buffer_a.clone(), path, cx)
2478        })
2479        .await
2480        .unwrap();
2481
2482    executor.run_until_parked();
2483
2484    new_buffer_b.read_with(cx_b, |buffer_b, _| {
2485        assert_eq!(
2486            buffer_b.file().unwrap().path().as_ref(),
2487            Path::new("file3.rs")
2488        );
2489
2490        new_buffer_a.read_with(cx_a, |buffer_a, _| {
2491            assert_eq!(buffer_b.saved_mtime(), buffer_a.saved_mtime());
2492            assert_eq!(buffer_b.saved_version(), buffer_a.saved_version());
2493        });
2494    });
2495}
2496
2497#[gpui::test(iterations = 10)]
2498async fn test_git_diff_base_change(
2499    executor: BackgroundExecutor,
2500    cx_a: &mut TestAppContext,
2501    cx_b: &mut TestAppContext,
2502) {
2503    let mut server = TestServer::start(executor.clone()).await;
2504    let client_a = server.create_client(cx_a, "user_a").await;
2505    let client_b = server.create_client(cx_b, "user_b").await;
2506    server
2507        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
2508        .await;
2509    let active_call_a = cx_a.read(ActiveCall::global);
2510
2511    client_a
2512        .fs()
2513        .insert_tree(
2514            "/dir",
2515            json!({
2516            ".git": {},
2517            "sub": {
2518                ".git": {},
2519                "b.txt": "
2520                    one
2521                    two
2522                    three
2523                ".unindent(),
2524            },
2525            "a.txt": "
2526                    one
2527                    two
2528                    three
2529                ".unindent(),
2530            }),
2531        )
2532        .await;
2533
2534    let (project_local, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2535    let project_id = active_call_a
2536        .update(cx_a, |call, cx| {
2537            call.share_project(project_local.clone(), cx)
2538        })
2539        .await
2540        .unwrap();
2541
2542    let project_remote = client_b.build_remote_project(project_id, cx_b).await;
2543
2544    let diff_base = "
2545        one
2546        three
2547    "
2548    .unindent();
2549
2550    let new_diff_base = "
2551        one
2552        two
2553    "
2554    .unindent();
2555
2556    client_a.fs().set_index_for_repo(
2557        Path::new("/dir/.git"),
2558        &[(Path::new("a.txt"), diff_base.clone())],
2559    );
2560
2561    // Create the buffer
2562    let buffer_local_a = project_local
2563        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
2564        .await
2565        .unwrap();
2566
2567    // Wait for it to catch up to the new diff
2568    executor.run_until_parked();
2569
2570    // Smoke test diffing
2571
2572    buffer_local_a.read_with(cx_a, |buffer, _| {
2573        assert_eq!(buffer.diff_base(), Some(diff_base.as_ref()));
2574        git::diff::assert_hunks(
2575            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2576            &buffer,
2577            &diff_base,
2578            &[(1..2, "", "two\n")],
2579        );
2580    });
2581
2582    // Create remote buffer
2583    let buffer_remote_a = project_remote
2584        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
2585        .await
2586        .unwrap();
2587
2588    // Wait remote buffer to catch up to the new diff
2589    executor.run_until_parked();
2590
2591    // Smoke test diffing
2592
2593    buffer_remote_a.read_with(cx_b, |buffer, _| {
2594        assert_eq!(buffer.diff_base(), Some(diff_base.as_ref()));
2595        git::diff::assert_hunks(
2596            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2597            &buffer,
2598            &diff_base,
2599            &[(1..2, "", "two\n")],
2600        );
2601    });
2602
2603    client_a.fs().set_index_for_repo(
2604        Path::new("/dir/.git"),
2605        &[(Path::new("a.txt"), new_diff_base.clone())],
2606    );
2607
2608    // Wait for buffer_local_a to receive it
2609    executor.run_until_parked();
2610
2611    // Smoke test new diffing
2612
2613    buffer_local_a.read_with(cx_a, |buffer, _| {
2614        assert_eq!(buffer.diff_base(), Some(new_diff_base.as_ref()));
2615
2616        git::diff::assert_hunks(
2617            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2618            &buffer,
2619            &diff_base,
2620            &[(2..3, "", "three\n")],
2621        );
2622    });
2623
2624    // Smoke test B
2625
2626    buffer_remote_a.read_with(cx_b, |buffer, _| {
2627        assert_eq!(buffer.diff_base(), Some(new_diff_base.as_ref()));
2628        git::diff::assert_hunks(
2629            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2630            &buffer,
2631            &diff_base,
2632            &[(2..3, "", "three\n")],
2633        );
2634    });
2635
2636    //Nested git dir
2637
2638    let diff_base = "
2639        one
2640        three
2641    "
2642    .unindent();
2643
2644    let new_diff_base = "
2645        one
2646        two
2647    "
2648    .unindent();
2649
2650    client_a.fs().set_index_for_repo(
2651        Path::new("/dir/sub/.git"),
2652        &[(Path::new("b.txt"), diff_base.clone())],
2653    );
2654
2655    // Create the buffer
2656    let buffer_local_b = project_local
2657        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2658        .await
2659        .unwrap();
2660
2661    // Wait for it to catch up to the new diff
2662    executor.run_until_parked();
2663
2664    // Smoke test diffing
2665
2666    buffer_local_b.read_with(cx_a, |buffer, _| {
2667        assert_eq!(buffer.diff_base(), Some(diff_base.as_ref()));
2668        git::diff::assert_hunks(
2669            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2670            &buffer,
2671            &diff_base,
2672            &[(1..2, "", "two\n")],
2673        );
2674    });
2675
2676    // Create remote buffer
2677    let buffer_remote_b = project_remote
2678        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "sub/b.txt"), cx))
2679        .await
2680        .unwrap();
2681
2682    // Wait remote buffer to catch up to the new diff
2683    executor.run_until_parked();
2684
2685    // Smoke test diffing
2686
2687    buffer_remote_b.read_with(cx_b, |buffer, _| {
2688        assert_eq!(buffer.diff_base(), Some(diff_base.as_ref()));
2689        git::diff::assert_hunks(
2690            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2691            &buffer,
2692            &diff_base,
2693            &[(1..2, "", "two\n")],
2694        );
2695    });
2696
2697    client_a.fs().set_index_for_repo(
2698        Path::new("/dir/sub/.git"),
2699        &[(Path::new("b.txt"), new_diff_base.clone())],
2700    );
2701
2702    // Wait for buffer_local_b to receive it
2703    executor.run_until_parked();
2704
2705    // Smoke test new diffing
2706
2707    buffer_local_b.read_with(cx_a, |buffer, _| {
2708        assert_eq!(buffer.diff_base(), Some(new_diff_base.as_ref()));
2709        println!("{:?}", buffer.as_rope().to_string());
2710        println!("{:?}", buffer.diff_base());
2711        println!(
2712            "{:?}",
2713            buffer
2714                .snapshot()
2715                .git_diff_hunks_in_row_range(0..4)
2716                .collect::<Vec<_>>()
2717        );
2718
2719        git::diff::assert_hunks(
2720            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2721            &buffer,
2722            &diff_base,
2723            &[(2..3, "", "three\n")],
2724        );
2725    });
2726
2727    // Smoke test B
2728
2729    buffer_remote_b.read_with(cx_b, |buffer, _| {
2730        assert_eq!(buffer.diff_base(), Some(new_diff_base.as_ref()));
2731        git::diff::assert_hunks(
2732            buffer.snapshot().git_diff_hunks_in_row_range(0..4),
2733            &buffer,
2734            &diff_base,
2735            &[(2..3, "", "three\n")],
2736        );
2737    });
2738}
2739
2740#[gpui::test]
2741async fn test_git_branch_name(
2742    executor: BackgroundExecutor,
2743    cx_a: &mut TestAppContext,
2744    cx_b: &mut TestAppContext,
2745    cx_c: &mut TestAppContext,
2746) {
2747    let mut server = TestServer::start(executor.clone()).await;
2748    let client_a = server.create_client(cx_a, "user_a").await;
2749    let client_b = server.create_client(cx_b, "user_b").await;
2750    let client_c = server.create_client(cx_c, "user_c").await;
2751    server
2752        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2753        .await;
2754    let active_call_a = cx_a.read(ActiveCall::global);
2755
2756    client_a
2757        .fs()
2758        .insert_tree(
2759            "/dir",
2760            json!({
2761            ".git": {},
2762            }),
2763        )
2764        .await;
2765
2766    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2767    let project_id = active_call_a
2768        .update(cx_a, |call, cx| {
2769            call.share_project(project_local.clone(), cx)
2770        })
2771        .await
2772        .unwrap();
2773
2774    let project_remote = client_b.build_remote_project(project_id, cx_b).await;
2775    client_a
2776        .fs()
2777        .set_branch_name(Path::new("/dir/.git"), Some("branch-1"));
2778
2779    // Wait for it to catch up to the new branch
2780    executor.run_until_parked();
2781
2782    #[track_caller]
2783    fn assert_branch(branch_name: Option<impl Into<String>>, project: &Project, cx: &AppContext) {
2784        let branch_name = branch_name.map(Into::into);
2785        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
2786        assert_eq!(worktrees.len(), 1);
2787        let worktree = worktrees[0].clone();
2788        let root_entry = worktree.read(cx).snapshot().root_git_entry().unwrap();
2789        assert_eq!(root_entry.branch(), branch_name.map(Into::into));
2790    }
2791
2792    // Smoke test branch reading
2793
2794    project_local.read_with(cx_a, |project, cx| {
2795        assert_branch(Some("branch-1"), project, cx)
2796    });
2797
2798    project_remote.read_with(cx_b, |project, cx| {
2799        assert_branch(Some("branch-1"), project, cx)
2800    });
2801
2802    client_a
2803        .fs()
2804        .set_branch_name(Path::new("/dir/.git"), Some("branch-2"));
2805
2806    // Wait for buffer_local_a to receive it
2807    executor.run_until_parked();
2808
2809    // Smoke test branch reading
2810
2811    project_local.read_with(cx_a, |project, cx| {
2812        assert_branch(Some("branch-2"), project, cx)
2813    });
2814
2815    project_remote.read_with(cx_b, |project, cx| {
2816        assert_branch(Some("branch-2"), project, cx)
2817    });
2818
2819    let project_remote_c = client_c.build_remote_project(project_id, cx_c).await;
2820    executor.run_until_parked();
2821
2822    project_remote_c.read_with(cx_c, |project, cx| {
2823        assert_branch(Some("branch-2"), project, cx)
2824    });
2825}
2826
2827#[gpui::test]
2828async fn test_git_status_sync(
2829    executor: BackgroundExecutor,
2830    cx_a: &mut TestAppContext,
2831    cx_b: &mut TestAppContext,
2832    cx_c: &mut TestAppContext,
2833) {
2834    let mut server = TestServer::start(executor.clone()).await;
2835    let client_a = server.create_client(cx_a, "user_a").await;
2836    let client_b = server.create_client(cx_b, "user_b").await;
2837    let client_c = server.create_client(cx_c, "user_c").await;
2838    server
2839        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
2840        .await;
2841    let active_call_a = cx_a.read(ActiveCall::global);
2842
2843    client_a
2844        .fs()
2845        .insert_tree(
2846            "/dir",
2847            json!({
2848            ".git": {},
2849            "a.txt": "a",
2850            "b.txt": "b",
2851            }),
2852        )
2853        .await;
2854
2855    const A_TXT: &str = "a.txt";
2856    const B_TXT: &str = "b.txt";
2857
2858    client_a.fs().set_status_for_repo_via_git_operation(
2859        Path::new("/dir/.git"),
2860        &[
2861            (&Path::new(A_TXT), GitFileStatus::Added),
2862            (&Path::new(B_TXT), GitFileStatus::Added),
2863        ],
2864    );
2865
2866    let (project_local, _worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2867    let project_id = active_call_a
2868        .update(cx_a, |call, cx| {
2869            call.share_project(project_local.clone(), cx)
2870        })
2871        .await
2872        .unwrap();
2873
2874    let project_remote = client_b.build_remote_project(project_id, cx_b).await;
2875
2876    // Wait for it to catch up to the new status
2877    executor.run_until_parked();
2878
2879    #[track_caller]
2880    fn assert_status(
2881        file: &impl AsRef<Path>,
2882        status: Option<GitFileStatus>,
2883        project: &Project,
2884        cx: &AppContext,
2885    ) {
2886        let file = file.as_ref();
2887        let worktrees = project.visible_worktrees(cx).collect::<Vec<_>>();
2888        assert_eq!(worktrees.len(), 1);
2889        let worktree = worktrees[0].clone();
2890        let snapshot = worktree.read(cx).snapshot();
2891        assert_eq!(snapshot.status_for_file(file), status);
2892    }
2893
2894    // Smoke test status reading
2895
2896    project_local.read_with(cx_a, |project, cx| {
2897        assert_status(&Path::new(A_TXT), Some(GitFileStatus::Added), project, cx);
2898        assert_status(&Path::new(B_TXT), Some(GitFileStatus::Added), project, cx);
2899    });
2900
2901    project_remote.read_with(cx_b, |project, cx| {
2902        assert_status(&Path::new(A_TXT), Some(GitFileStatus::Added), project, cx);
2903        assert_status(&Path::new(B_TXT), Some(GitFileStatus::Added), project, cx);
2904    });
2905
2906    client_a.fs().set_status_for_repo_via_working_copy_change(
2907        Path::new("/dir/.git"),
2908        &[
2909            (&Path::new(A_TXT), GitFileStatus::Modified),
2910            (&Path::new(B_TXT), GitFileStatus::Modified),
2911        ],
2912    );
2913
2914    // Wait for buffer_local_a to receive it
2915    executor.run_until_parked();
2916
2917    // Smoke test status reading
2918
2919    project_local.read_with(cx_a, |project, cx| {
2920        assert_status(
2921            &Path::new(A_TXT),
2922            Some(GitFileStatus::Modified),
2923            project,
2924            cx,
2925        );
2926        assert_status(
2927            &Path::new(B_TXT),
2928            Some(GitFileStatus::Modified),
2929            project,
2930            cx,
2931        );
2932    });
2933
2934    project_remote.read_with(cx_b, |project, cx| {
2935        assert_status(
2936            &Path::new(A_TXT),
2937            Some(GitFileStatus::Modified),
2938            project,
2939            cx,
2940        );
2941        assert_status(
2942            &Path::new(B_TXT),
2943            Some(GitFileStatus::Modified),
2944            project,
2945            cx,
2946        );
2947    });
2948
2949    // And synchronization while joining
2950    let project_remote_c = client_c.build_remote_project(project_id, cx_c).await;
2951    executor.run_until_parked();
2952
2953    project_remote_c.read_with(cx_c, |project, cx| {
2954        assert_status(
2955            &Path::new(A_TXT),
2956            Some(GitFileStatus::Modified),
2957            project,
2958            cx,
2959        );
2960        assert_status(
2961            &Path::new(B_TXT),
2962            Some(GitFileStatus::Modified),
2963            project,
2964            cx,
2965        );
2966    });
2967}
2968
2969#[gpui::test(iterations = 10)]
2970async fn test_fs_operations(
2971    executor: BackgroundExecutor,
2972    cx_a: &mut TestAppContext,
2973    cx_b: &mut TestAppContext,
2974) {
2975    let mut server = TestServer::start(executor.clone()).await;
2976    let client_a = server.create_client(cx_a, "user_a").await;
2977    let client_b = server.create_client(cx_b, "user_b").await;
2978    server
2979        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
2980        .await;
2981    let active_call_a = cx_a.read(ActiveCall::global);
2982
2983    client_a
2984        .fs()
2985        .insert_tree(
2986            "/dir",
2987            json!({
2988                "a.txt": "a-contents",
2989                "b.txt": "b-contents",
2990            }),
2991        )
2992        .await;
2993    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
2994    let project_id = active_call_a
2995        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
2996        .await
2997        .unwrap();
2998    let project_b = client_b.build_remote_project(project_id, cx_b).await;
2999
3000    let worktree_a = project_a.read_with(cx_a, |project, _| project.worktrees().next().unwrap());
3001
3002    let worktree_b = project_b.read_with(cx_b, |project, _| project.worktrees().next().unwrap());
3003
3004    let entry = project_b
3005        .update(cx_b, |project, cx| {
3006            project.create_entry((worktree_id, "c.txt"), false, cx)
3007        })
3008        .await
3009        .unwrap()
3010        .unwrap();
3011
3012    worktree_a.read_with(cx_a, |worktree, _| {
3013        assert_eq!(
3014            worktree
3015                .paths()
3016                .map(|p| p.to_string_lossy())
3017                .collect::<Vec<_>>(),
3018            ["a.txt", "b.txt", "c.txt"]
3019        );
3020    });
3021
3022    worktree_b.read_with(cx_b, |worktree, _| {
3023        assert_eq!(
3024            worktree
3025                .paths()
3026                .map(|p| p.to_string_lossy())
3027                .collect::<Vec<_>>(),
3028            ["a.txt", "b.txt", "c.txt"]
3029        );
3030    });
3031
3032    project_b
3033        .update(cx_b, |project, cx| {
3034            project.rename_entry(entry.id, Path::new("d.txt"), cx)
3035        })
3036        .await
3037        .unwrap()
3038        .unwrap();
3039
3040    worktree_a.read_with(cx_a, |worktree, _| {
3041        assert_eq!(
3042            worktree
3043                .paths()
3044                .map(|p| p.to_string_lossy())
3045                .collect::<Vec<_>>(),
3046            ["a.txt", "b.txt", "d.txt"]
3047        );
3048    });
3049
3050    worktree_b.read_with(cx_b, |worktree, _| {
3051        assert_eq!(
3052            worktree
3053                .paths()
3054                .map(|p| p.to_string_lossy())
3055                .collect::<Vec<_>>(),
3056            ["a.txt", "b.txt", "d.txt"]
3057        );
3058    });
3059
3060    let dir_entry = project_b
3061        .update(cx_b, |project, cx| {
3062            project.create_entry((worktree_id, "DIR"), true, cx)
3063        })
3064        .await
3065        .unwrap()
3066        .unwrap();
3067
3068    worktree_a.read_with(cx_a, |worktree, _| {
3069        assert_eq!(
3070            worktree
3071                .paths()
3072                .map(|p| p.to_string_lossy())
3073                .collect::<Vec<_>>(),
3074            ["DIR", "a.txt", "b.txt", "d.txt"]
3075        );
3076    });
3077
3078    worktree_b.read_with(cx_b, |worktree, _| {
3079        assert_eq!(
3080            worktree
3081                .paths()
3082                .map(|p| p.to_string_lossy())
3083                .collect::<Vec<_>>(),
3084            ["DIR", "a.txt", "b.txt", "d.txt"]
3085        );
3086    });
3087
3088    project_b
3089        .update(cx_b, |project, cx| {
3090            project.create_entry((worktree_id, "DIR/e.txt"), false, cx)
3091        })
3092        .await
3093        .unwrap()
3094        .unwrap();
3095    project_b
3096        .update(cx_b, |project, cx| {
3097            project.create_entry((worktree_id, "DIR/SUBDIR"), true, cx)
3098        })
3099        .await
3100        .unwrap()
3101        .unwrap();
3102    project_b
3103        .update(cx_b, |project, cx| {
3104            project.create_entry((worktree_id, "DIR/SUBDIR/f.txt"), false, cx)
3105        })
3106        .await
3107        .unwrap()
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            [
3117                "DIR",
3118                "DIR/SUBDIR",
3119                "DIR/SUBDIR/f.txt",
3120                "DIR/e.txt",
3121                "a.txt",
3122                "b.txt",
3123                "d.txt"
3124            ]
3125        );
3126    });
3127
3128    worktree_b.read_with(cx_b, |worktree, _| {
3129        assert_eq!(
3130            worktree
3131                .paths()
3132                .map(|p| p.to_string_lossy())
3133                .collect::<Vec<_>>(),
3134            [
3135                "DIR",
3136                "DIR/SUBDIR",
3137                "DIR/SUBDIR/f.txt",
3138                "DIR/e.txt",
3139                "a.txt",
3140                "b.txt",
3141                "d.txt"
3142            ]
3143        );
3144    });
3145
3146    project_b
3147        .update(cx_b, |project, cx| {
3148            project.copy_entry(entry.id, Path::new("f.txt"), cx)
3149        })
3150        .await
3151        .unwrap()
3152        .unwrap();
3153
3154    worktree_a.read_with(cx_a, |worktree, _| {
3155        assert_eq!(
3156            worktree
3157                .paths()
3158                .map(|p| p.to_string_lossy())
3159                .collect::<Vec<_>>(),
3160            [
3161                "DIR",
3162                "DIR/SUBDIR",
3163                "DIR/SUBDIR/f.txt",
3164                "DIR/e.txt",
3165                "a.txt",
3166                "b.txt",
3167                "d.txt",
3168                "f.txt"
3169            ]
3170        );
3171    });
3172
3173    worktree_b.read_with(cx_b, |worktree, _| {
3174        assert_eq!(
3175            worktree
3176                .paths()
3177                .map(|p| p.to_string_lossy())
3178                .collect::<Vec<_>>(),
3179            [
3180                "DIR",
3181                "DIR/SUBDIR",
3182                "DIR/SUBDIR/f.txt",
3183                "DIR/e.txt",
3184                "a.txt",
3185                "b.txt",
3186                "d.txt",
3187                "f.txt"
3188            ]
3189        );
3190    });
3191
3192    project_b
3193        .update(cx_b, |project, cx| {
3194            project.delete_entry(dir_entry.id, false, cx).unwrap()
3195        })
3196        .await
3197        .unwrap();
3198    executor.run_until_parked();
3199
3200    worktree_a.read_with(cx_a, |worktree, _| {
3201        assert_eq!(
3202            worktree
3203                .paths()
3204                .map(|p| p.to_string_lossy())
3205                .collect::<Vec<_>>(),
3206            ["a.txt", "b.txt", "d.txt", "f.txt"]
3207        );
3208    });
3209
3210    worktree_b.read_with(cx_b, |worktree, _| {
3211        assert_eq!(
3212            worktree
3213                .paths()
3214                .map(|p| p.to_string_lossy())
3215                .collect::<Vec<_>>(),
3216            ["a.txt", "b.txt", "d.txt", "f.txt"]
3217        );
3218    });
3219
3220    project_b
3221        .update(cx_b, |project, cx| {
3222            project.delete_entry(entry.id, false, cx).unwrap()
3223        })
3224        .await
3225        .unwrap();
3226
3227    worktree_a.read_with(cx_a, |worktree, _| {
3228        assert_eq!(
3229            worktree
3230                .paths()
3231                .map(|p| p.to_string_lossy())
3232                .collect::<Vec<_>>(),
3233            ["a.txt", "b.txt", "f.txt"]
3234        );
3235    });
3236
3237    worktree_b.read_with(cx_b, |worktree, _| {
3238        assert_eq!(
3239            worktree
3240                .paths()
3241                .map(|p| p.to_string_lossy())
3242                .collect::<Vec<_>>(),
3243            ["a.txt", "b.txt", "f.txt"]
3244        );
3245    });
3246}
3247
3248#[gpui::test(iterations = 10)]
3249async fn test_local_settings(
3250    executor: BackgroundExecutor,
3251    cx_a: &mut TestAppContext,
3252    cx_b: &mut TestAppContext,
3253) {
3254    let mut server = TestServer::start(executor.clone()).await;
3255    let client_a = server.create_client(cx_a, "user_a").await;
3256    let client_b = server.create_client(cx_b, "user_b").await;
3257    server
3258        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3259        .await;
3260    let active_call_a = cx_a.read(ActiveCall::global);
3261
3262    // As client A, open a project that contains some local settings files
3263    client_a
3264        .fs()
3265        .insert_tree(
3266            "/dir",
3267            json!({
3268                ".zed": {
3269                    "settings.json": r#"{ "tab_size": 2 }"#
3270                },
3271                "a": {
3272                    ".zed": {
3273                        "settings.json": r#"{ "tab_size": 8 }"#
3274                    },
3275                    "a.txt": "a-contents",
3276                },
3277                "b": {
3278                    "b.txt": "b-contents",
3279                }
3280            }),
3281        )
3282        .await;
3283    let (project_a, _) = client_a.build_local_project("/dir", cx_a).await;
3284    executor.run_until_parked();
3285    let project_id = active_call_a
3286        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3287        .await
3288        .unwrap();
3289    executor.run_until_parked();
3290
3291    // As client B, join that project and observe the local settings.
3292    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3293
3294    let worktree_b = project_b.read_with(cx_b, |project, _| project.worktrees().next().unwrap());
3295    executor.run_until_parked();
3296    cx_b.read(|cx| {
3297        let store = cx.global::<SettingsStore>();
3298        assert_eq!(
3299            store
3300                .local_settings(worktree_b.read(cx).id().to_usize())
3301                .collect::<Vec<_>>(),
3302            &[
3303                (Path::new("").into(), r#"{"tab_size":2}"#.to_string()),
3304                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3305            ]
3306        )
3307    });
3308
3309    // As client A, update a settings file. As Client B, see the changed settings.
3310    client_a
3311        .fs()
3312        .insert_file("/dir/.zed/settings.json", r#"{}"#.into())
3313        .await;
3314    executor.run_until_parked();
3315    cx_b.read(|cx| {
3316        let store = cx.global::<SettingsStore>();
3317        assert_eq!(
3318            store
3319                .local_settings(worktree_b.read(cx).id().to_usize())
3320                .collect::<Vec<_>>(),
3321            &[
3322                (Path::new("").into(), r#"{}"#.to_string()),
3323                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3324            ]
3325        )
3326    });
3327
3328    // As client A, create and remove some settings files. As client B, see the changed settings.
3329    client_a
3330        .fs()
3331        .remove_file("/dir/.zed/settings.json".as_ref(), Default::default())
3332        .await
3333        .unwrap();
3334    client_a
3335        .fs()
3336        .create_dir("/dir/b/.zed".as_ref())
3337        .await
3338        .unwrap();
3339    client_a
3340        .fs()
3341        .insert_file("/dir/b/.zed/settings.json", r#"{"tab_size": 4}"#.into())
3342        .await;
3343    executor.run_until_parked();
3344    cx_b.read(|cx| {
3345        let store = cx.global::<SettingsStore>();
3346        assert_eq!(
3347            store
3348                .local_settings(worktree_b.read(cx).id().to_usize())
3349                .collect::<Vec<_>>(),
3350            &[
3351                (Path::new("a").into(), r#"{"tab_size":8}"#.to_string()),
3352                (Path::new("b").into(), r#"{"tab_size":4}"#.to_string()),
3353            ]
3354        )
3355    });
3356
3357    // As client B, disconnect.
3358    server.forbid_connections();
3359    server.disconnect_client(client_b.peer_id().unwrap());
3360
3361    // As client A, change and remove settings files while client B is disconnected.
3362    client_a
3363        .fs()
3364        .insert_file("/dir/a/.zed/settings.json", r#"{"hard_tabs":true}"#.into())
3365        .await;
3366    client_a
3367        .fs()
3368        .remove_file("/dir/b/.zed/settings.json".as_ref(), Default::default())
3369        .await
3370        .unwrap();
3371    executor.run_until_parked();
3372
3373    // As client B, reconnect and see the changed settings.
3374    server.allow_connections();
3375    executor.advance_clock(RECEIVE_TIMEOUT);
3376    cx_b.read(|cx| {
3377        let store = cx.global::<SettingsStore>();
3378        assert_eq!(
3379            store
3380                .local_settings(worktree_b.read(cx).id().to_usize())
3381                .collect::<Vec<_>>(),
3382            &[(Path::new("a").into(), r#"{"hard_tabs":true}"#.to_string()),]
3383        )
3384    });
3385}
3386
3387#[gpui::test(iterations = 10)]
3388async fn test_buffer_conflict_after_save(
3389    executor: BackgroundExecutor,
3390    cx_a: &mut TestAppContext,
3391    cx_b: &mut TestAppContext,
3392) {
3393    let mut server = TestServer::start(executor.clone()).await;
3394    let client_a = server.create_client(cx_a, "user_a").await;
3395    let client_b = server.create_client(cx_b, "user_b").await;
3396    server
3397        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3398        .await;
3399    let active_call_a = cx_a.read(ActiveCall::global);
3400
3401    client_a
3402        .fs()
3403        .insert_tree(
3404            "/dir",
3405            json!({
3406                "a.txt": "a-contents",
3407            }),
3408        )
3409        .await;
3410    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3411    let project_id = active_call_a
3412        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3413        .await
3414        .unwrap();
3415    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3416
3417    // Open a buffer as client B
3418    let buffer_b = project_b
3419        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3420        .await
3421        .unwrap();
3422
3423    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "world ")], None, cx));
3424
3425    buffer_b.read_with(cx_b, |buf, _| {
3426        assert!(buf.is_dirty());
3427        assert!(!buf.has_conflict());
3428    });
3429
3430    project_b
3431        .update(cx_b, |project, cx| {
3432            project.save_buffer(buffer_b.clone(), cx)
3433        })
3434        .await
3435        .unwrap();
3436
3437    buffer_b.read_with(cx_b, |buffer_b, _| assert!(!buffer_b.is_dirty()));
3438
3439    buffer_b.read_with(cx_b, |buf, _| {
3440        assert!(!buf.has_conflict());
3441    });
3442
3443    buffer_b.update(cx_b, |buf, cx| buf.edit([(0..0, "hello ")], None, cx));
3444
3445    buffer_b.read_with(cx_b, |buf, _| {
3446        assert!(buf.is_dirty());
3447        assert!(!buf.has_conflict());
3448    });
3449}
3450
3451#[gpui::test(iterations = 10)]
3452async fn test_buffer_reloading(
3453    executor: BackgroundExecutor,
3454    cx_a: &mut TestAppContext,
3455    cx_b: &mut TestAppContext,
3456) {
3457    let mut server = TestServer::start(executor.clone()).await;
3458    let client_a = server.create_client(cx_a, "user_a").await;
3459    let client_b = server.create_client(cx_b, "user_b").await;
3460    server
3461        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3462        .await;
3463    let active_call_a = cx_a.read(ActiveCall::global);
3464
3465    client_a
3466        .fs()
3467        .insert_tree(
3468            "/dir",
3469            json!({
3470                "a.txt": "a\nb\nc",
3471            }),
3472        )
3473        .await;
3474    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3475    let project_id = active_call_a
3476        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3477        .await
3478        .unwrap();
3479    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3480
3481    // Open a buffer as client B
3482    let buffer_b = project_b
3483        .update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3484        .await
3485        .unwrap();
3486
3487    buffer_b.read_with(cx_b, |buf, _| {
3488        assert!(!buf.is_dirty());
3489        assert!(!buf.has_conflict());
3490        assert_eq!(buf.line_ending(), LineEnding::Unix);
3491    });
3492
3493    let new_contents = Rope::from("d\ne\nf");
3494    client_a
3495        .fs()
3496        .save("/dir/a.txt".as_ref(), &new_contents, LineEnding::Windows)
3497        .await
3498        .unwrap();
3499
3500    executor.run_until_parked();
3501
3502    buffer_b.read_with(cx_b, |buf, _| {
3503        assert_eq!(buf.text(), new_contents.to_string());
3504        assert!(!buf.is_dirty());
3505        assert!(!buf.has_conflict());
3506        assert_eq!(buf.line_ending(), LineEnding::Windows);
3507    });
3508}
3509
3510#[gpui::test(iterations = 10)]
3511async fn test_editing_while_guest_opens_buffer(
3512    executor: BackgroundExecutor,
3513    cx_a: &mut TestAppContext,
3514    cx_b: &mut TestAppContext,
3515) {
3516    let mut server = TestServer::start(executor.clone()).await;
3517    let client_a = server.create_client(cx_a, "user_a").await;
3518    let client_b = server.create_client(cx_b, "user_b").await;
3519    server
3520        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3521        .await;
3522    let active_call_a = cx_a.read(ActiveCall::global);
3523
3524    client_a
3525        .fs()
3526        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3527        .await;
3528    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3529    let project_id = active_call_a
3530        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3531        .await
3532        .unwrap();
3533    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3534
3535    // Open a buffer as client A
3536    let buffer_a = project_a
3537        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3538        .await
3539        .unwrap();
3540
3541    // Start opening the same buffer as client B
3542    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3543    let buffer_b = cx_b.executor().spawn(open_buffer);
3544
3545    // Edit the buffer as client A while client B is still opening it.
3546    cx_b.executor().simulate_random_delay().await;
3547    buffer_a.update(cx_a, |buf, cx| buf.edit([(0..0, "X")], None, cx));
3548    cx_b.executor().simulate_random_delay().await;
3549    buffer_a.update(cx_a, |buf, cx| buf.edit([(1..1, "Y")], None, cx));
3550
3551    let text = buffer_a.read_with(cx_a, |buf, _| buf.text());
3552    let buffer_b = buffer_b.await.unwrap();
3553    executor.run_until_parked();
3554
3555    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), text));
3556}
3557
3558#[gpui::test(iterations = 10)]
3559async fn test_leaving_worktree_while_opening_buffer(
3560    executor: BackgroundExecutor,
3561    cx_a: &mut TestAppContext,
3562    cx_b: &mut TestAppContext,
3563) {
3564    let mut server = TestServer::start(executor.clone()).await;
3565    let client_a = server.create_client(cx_a, "user_a").await;
3566    let client_b = server.create_client(cx_b, "user_b").await;
3567    server
3568        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3569        .await;
3570    let active_call_a = cx_a.read(ActiveCall::global);
3571
3572    client_a
3573        .fs()
3574        .insert_tree("/dir", json!({ "a.txt": "a-contents" }))
3575        .await;
3576    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3577    let project_id = active_call_a
3578        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3579        .await
3580        .unwrap();
3581    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3582
3583    // See that a guest has joined as client A.
3584    executor.run_until_parked();
3585
3586    project_a.read_with(cx_a, |p, _| assert_eq!(p.collaborators().len(), 1));
3587
3588    // Begin opening a buffer as client B, but leave the project before the open completes.
3589    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx));
3590    let buffer_b = cx_b.executor().spawn(open_buffer);
3591    cx_b.update(|_| drop(project_b));
3592    drop(buffer_b);
3593
3594    // See that the guest has left.
3595    executor.run_until_parked();
3596
3597    project_a.read_with(cx_a, |p, _| assert!(p.collaborators().is_empty()));
3598}
3599
3600#[gpui::test(iterations = 10)]
3601async fn test_canceling_buffer_opening(
3602    executor: BackgroundExecutor,
3603    cx_a: &mut TestAppContext,
3604    cx_b: &mut TestAppContext,
3605) {
3606    let mut server = TestServer::start(executor.clone()).await;
3607    let client_a = server.create_client(cx_a, "user_a").await;
3608    let client_b = server.create_client(cx_b, "user_b").await;
3609    server
3610        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
3611        .await;
3612    let active_call_a = cx_a.read(ActiveCall::global);
3613
3614    client_a
3615        .fs()
3616        .insert_tree(
3617            "/dir",
3618            json!({
3619                "a.txt": "abc",
3620            }),
3621        )
3622        .await;
3623    let (project_a, worktree_id) = client_a.build_local_project("/dir", cx_a).await;
3624    let project_id = active_call_a
3625        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3626        .await
3627        .unwrap();
3628    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3629
3630    let buffer_a = project_a
3631        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.txt"), cx))
3632        .await
3633        .unwrap();
3634
3635    // Open a buffer as client B but cancel after a random amount of time.
3636    let buffer_b = project_b.update(cx_b, |p, cx| {
3637        p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3638    });
3639    executor.simulate_random_delay().await;
3640    drop(buffer_b);
3641
3642    // Try opening the same buffer again as client B, and ensure we can
3643    // still do it despite the cancellation above.
3644    let buffer_b = project_b
3645        .update(cx_b, |p, cx| {
3646            p.open_buffer_by_id(buffer_a.read_with(cx_a, |a, _| a.remote_id()), cx)
3647        })
3648        .await
3649        .unwrap();
3650
3651    buffer_b.read_with(cx_b, |buf, _| assert_eq!(buf.text(), "abc"));
3652}
3653
3654#[gpui::test(iterations = 10)]
3655async fn test_leaving_project(
3656    executor: BackgroundExecutor,
3657    cx_a: &mut TestAppContext,
3658    cx_b: &mut TestAppContext,
3659    cx_c: &mut TestAppContext,
3660) {
3661    let mut server = TestServer::start(executor.clone()).await;
3662    let client_a = server.create_client(cx_a, "user_a").await;
3663    let client_b = server.create_client(cx_b, "user_b").await;
3664    let client_c = server.create_client(cx_c, "user_c").await;
3665    server
3666        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3667        .await;
3668    let active_call_a = cx_a.read(ActiveCall::global);
3669
3670    client_a
3671        .fs()
3672        .insert_tree(
3673            "/a",
3674            json!({
3675                "a.txt": "a-contents",
3676                "b.txt": "b-contents",
3677            }),
3678        )
3679        .await;
3680    let (project_a, _) = client_a.build_local_project("/a", cx_a).await;
3681    let project_id = active_call_a
3682        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3683        .await
3684        .unwrap();
3685    let project_b1 = client_b.build_remote_project(project_id, cx_b).await;
3686    let project_c = client_c.build_remote_project(project_id, cx_c).await;
3687
3688    // Client A sees that a guest has joined.
3689    executor.run_until_parked();
3690
3691    project_a.read_with(cx_a, |project, _| {
3692        assert_eq!(project.collaborators().len(), 2);
3693    });
3694
3695    project_b1.read_with(cx_b, |project, _| {
3696        assert_eq!(project.collaborators().len(), 2);
3697    });
3698
3699    project_c.read_with(cx_c, |project, _| {
3700        assert_eq!(project.collaborators().len(), 2);
3701    });
3702
3703    // Client B opens a buffer.
3704    let buffer_b1 = project_b1
3705        .update(cx_b, |project, cx| {
3706            let worktree_id = project.worktrees().next().unwrap().read(cx).id();
3707            project.open_buffer((worktree_id, "a.txt"), cx)
3708        })
3709        .await
3710        .unwrap();
3711
3712    buffer_b1.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3713
3714    // Drop client B's project and ensure client A and client C observe client B leaving.
3715    cx_b.update(|_| drop(project_b1));
3716    executor.run_until_parked();
3717
3718    project_a.read_with(cx_a, |project, _| {
3719        assert_eq!(project.collaborators().len(), 1);
3720    });
3721
3722    project_c.read_with(cx_c, |project, _| {
3723        assert_eq!(project.collaborators().len(), 1);
3724    });
3725
3726    // Client B re-joins the project and can open buffers as before.
3727    let project_b2 = client_b.build_remote_project(project_id, cx_b).await;
3728    executor.run_until_parked();
3729
3730    project_a.read_with(cx_a, |project, _| {
3731        assert_eq!(project.collaborators().len(), 2);
3732    });
3733
3734    project_b2.read_with(cx_b, |project, _| {
3735        assert_eq!(project.collaborators().len(), 2);
3736    });
3737
3738    project_c.read_with(cx_c, |project, _| {
3739        assert_eq!(project.collaborators().len(), 2);
3740    });
3741
3742    let buffer_b2 = project_b2
3743        .update(cx_b, |project, cx| {
3744            let worktree_id = project.worktrees().next().unwrap().read(cx).id();
3745            project.open_buffer((worktree_id, "a.txt"), cx)
3746        })
3747        .await
3748        .unwrap();
3749
3750    buffer_b2.read_with(cx_b, |buffer, _| assert_eq!(buffer.text(), "a-contents"));
3751
3752    project_a.read_with(cx_a, |project, _| {
3753        assert_eq!(project.collaborators().len(), 2);
3754    });
3755
3756    // Drop client B's connection and ensure client A and client C observe client B leaving.
3757    client_b.disconnect(&cx_b.to_async());
3758    executor.advance_clock(RECONNECT_TIMEOUT);
3759
3760    project_a.read_with(cx_a, |project, _| {
3761        assert_eq!(project.collaborators().len(), 1);
3762    });
3763
3764    project_b2.read_with(cx_b, |project, _| {
3765        assert!(project.is_disconnected());
3766    });
3767
3768    project_c.read_with(cx_c, |project, _| {
3769        assert_eq!(project.collaborators().len(), 1);
3770    });
3771
3772    // Client B can't join the project, unless they re-join the room.
3773    cx_b.spawn(|cx| {
3774        Project::in_room(
3775            project_id,
3776            client_b.app_state.client.clone(),
3777            client_b.user_store().clone(),
3778            client_b.language_registry().clone(),
3779            FakeFs::new(cx.background_executor().clone()),
3780            cx,
3781        )
3782    })
3783    .await
3784    .unwrap_err();
3785
3786    // Simulate connection loss for client C and ensure client A observes client C leaving the project.
3787    client_c.wait_for_current_user(cx_c).await;
3788    server.forbid_connections();
3789    server.disconnect_client(client_c.peer_id().unwrap());
3790    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
3791    executor.run_until_parked();
3792
3793    project_a.read_with(cx_a, |project, _| {
3794        assert_eq!(project.collaborators().len(), 0);
3795    });
3796
3797    project_b2.read_with(cx_b, |project, _| {
3798        assert!(project.is_disconnected());
3799    });
3800
3801    project_c.read_with(cx_c, |project, _| {
3802        assert!(project.is_disconnected());
3803    });
3804}
3805
3806#[gpui::test(iterations = 10)]
3807async fn test_collaborating_with_diagnostics(
3808    executor: BackgroundExecutor,
3809    cx_a: &mut TestAppContext,
3810    cx_b: &mut TestAppContext,
3811    cx_c: &mut TestAppContext,
3812) {
3813    let mut server = TestServer::start(executor.clone()).await;
3814    let client_a = server.create_client(cx_a, "user_a").await;
3815    let client_b = server.create_client(cx_b, "user_b").await;
3816    let client_c = server.create_client(cx_c, "user_c").await;
3817    server
3818        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
3819        .await;
3820    let active_call_a = cx_a.read(ActiveCall::global);
3821
3822    client_a.language_registry().add(Arc::new(Language::new(
3823        LanguageConfig {
3824            name: "Rust".into(),
3825            matcher: LanguageMatcher {
3826                path_suffixes: vec!["rs".to_string()],
3827                ..Default::default()
3828            },
3829            ..Default::default()
3830        },
3831        Some(tree_sitter_rust::language()),
3832    )));
3833    let mut fake_language_servers = client_a
3834        .language_registry()
3835        .register_fake_lsp_adapter("Rust", Default::default());
3836
3837    // Share a project as client A
3838    client_a
3839        .fs()
3840        .insert_tree(
3841            "/a",
3842            json!({
3843                "a.rs": "let one = two",
3844                "other.rs": "",
3845            }),
3846        )
3847        .await;
3848    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
3849
3850    // Cause the language server to start.
3851    let _buffer = project_a
3852        .update(cx_a, |project, cx| {
3853            project.open_buffer(
3854                ProjectPath {
3855                    worktree_id,
3856                    path: Path::new("other.rs").into(),
3857                },
3858                cx,
3859            )
3860        })
3861        .await
3862        .unwrap();
3863
3864    // Simulate a language server reporting errors for a file.
3865    let mut fake_language_server = fake_language_servers.next().await.unwrap();
3866    fake_language_server
3867        .receive_notification::<lsp::notification::DidOpenTextDocument>()
3868        .await;
3869    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
3870        lsp::PublishDiagnosticsParams {
3871            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
3872            version: None,
3873            diagnostics: vec![lsp::Diagnostic {
3874                severity: Some(lsp::DiagnosticSeverity::WARNING),
3875                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
3876                message: "message 0".to_string(),
3877                ..Default::default()
3878            }],
3879        },
3880    );
3881
3882    // Client A shares the project and, simultaneously, the language server
3883    // publishes a diagnostic. This is done to ensure that the server always
3884    // observes the latest diagnostics for a worktree.
3885    let project_id = active_call_a
3886        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
3887        .await
3888        .unwrap();
3889    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
3890        lsp::PublishDiagnosticsParams {
3891            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
3892            version: None,
3893            diagnostics: vec![lsp::Diagnostic {
3894                severity: Some(lsp::DiagnosticSeverity::ERROR),
3895                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
3896                message: "message 1".to_string(),
3897                ..Default::default()
3898            }],
3899        },
3900    );
3901
3902    // Join the worktree as client B.
3903    let project_b = client_b.build_remote_project(project_id, cx_b).await;
3904
3905    // Wait for server to see the diagnostics update.
3906    executor.run_until_parked();
3907
3908    // Ensure client B observes the new diagnostics.
3909
3910    project_b.read_with(cx_b, |project, cx| {
3911        assert_eq!(
3912            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
3913            &[(
3914                ProjectPath {
3915                    worktree_id,
3916                    path: Arc::from(Path::new("a.rs")),
3917                },
3918                LanguageServerId(0),
3919                DiagnosticSummary {
3920                    error_count: 1,
3921                    warning_count: 0,
3922                },
3923            )]
3924        )
3925    });
3926
3927    // Join project as client C and observe the diagnostics.
3928    let project_c = client_c.build_remote_project(project_id, cx_c).await;
3929    executor.run_until_parked();
3930    let project_c_diagnostic_summaries =
3931        Rc::new(RefCell::new(project_c.read_with(cx_c, |project, cx| {
3932            project.diagnostic_summaries(false, cx).collect::<Vec<_>>()
3933        })));
3934    project_c.update(cx_c, |_, cx| {
3935        let summaries = project_c_diagnostic_summaries.clone();
3936        cx.subscribe(&project_c, {
3937            move |p, _, event, cx| {
3938                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
3939                    *summaries.borrow_mut() = p.diagnostic_summaries(false, cx).collect();
3940                }
3941            }
3942        })
3943        .detach();
3944    });
3945
3946    executor.run_until_parked();
3947    assert_eq!(
3948        project_c_diagnostic_summaries.borrow().as_slice(),
3949        &[(
3950            ProjectPath {
3951                worktree_id,
3952                path: Arc::from(Path::new("a.rs")),
3953            },
3954            LanguageServerId(0),
3955            DiagnosticSummary {
3956                error_count: 1,
3957                warning_count: 0,
3958            },
3959        )]
3960    );
3961
3962    // Simulate a language server reporting more errors for a file.
3963    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
3964        lsp::PublishDiagnosticsParams {
3965            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
3966            version: None,
3967            diagnostics: vec![
3968                lsp::Diagnostic {
3969                    severity: Some(lsp::DiagnosticSeverity::ERROR),
3970                    range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 7)),
3971                    message: "message 1".to_string(),
3972                    ..Default::default()
3973                },
3974                lsp::Diagnostic {
3975                    severity: Some(lsp::DiagnosticSeverity::WARNING),
3976                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 13)),
3977                    message: "message 2".to_string(),
3978                    ..Default::default()
3979                },
3980            ],
3981        },
3982    );
3983
3984    // Clients B and C get the updated summaries
3985    executor.run_until_parked();
3986
3987    project_b.read_with(cx_b, |project, cx| {
3988        assert_eq!(
3989            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
3990            [(
3991                ProjectPath {
3992                    worktree_id,
3993                    path: Arc::from(Path::new("a.rs")),
3994                },
3995                LanguageServerId(0),
3996                DiagnosticSummary {
3997                    error_count: 1,
3998                    warning_count: 1,
3999                },
4000            )]
4001        );
4002    });
4003
4004    project_c.read_with(cx_c, |project, cx| {
4005        assert_eq!(
4006            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4007            [(
4008                ProjectPath {
4009                    worktree_id,
4010                    path: Arc::from(Path::new("a.rs")),
4011                },
4012                LanguageServerId(0),
4013                DiagnosticSummary {
4014                    error_count: 1,
4015                    warning_count: 1,
4016                },
4017            )]
4018        );
4019    });
4020
4021    // Open the file with the errors on client B. They should be present.
4022    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4023    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4024
4025    buffer_b.read_with(cx_b, |buffer, _| {
4026        assert_eq!(
4027            buffer
4028                .snapshot()
4029                .diagnostics_in_range::<_, Point>(0..buffer.len(), false)
4030                .collect::<Vec<_>>(),
4031            &[
4032                DiagnosticEntry {
4033                    range: Point::new(0, 4)..Point::new(0, 7),
4034                    diagnostic: Diagnostic {
4035                        group_id: 2,
4036                        message: "message 1".to_string(),
4037                        severity: lsp::DiagnosticSeverity::ERROR,
4038                        is_primary: true,
4039                        ..Default::default()
4040                    }
4041                },
4042                DiagnosticEntry {
4043                    range: Point::new(0, 10)..Point::new(0, 13),
4044                    diagnostic: Diagnostic {
4045                        group_id: 3,
4046                        severity: lsp::DiagnosticSeverity::WARNING,
4047                        message: "message 2".to_string(),
4048                        is_primary: true,
4049                        ..Default::default()
4050                    }
4051                }
4052            ]
4053        );
4054    });
4055
4056    // Simulate a language server reporting no errors for a file.
4057    fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4058        lsp::PublishDiagnosticsParams {
4059            uri: lsp::Url::from_file_path("/a/a.rs").unwrap(),
4060            version: None,
4061            diagnostics: vec![],
4062        },
4063    );
4064    executor.run_until_parked();
4065
4066    project_a.read_with(cx_a, |project, cx| {
4067        assert_eq!(
4068            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4069            []
4070        )
4071    });
4072
4073    project_b.read_with(cx_b, |project, cx| {
4074        assert_eq!(
4075            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4076            []
4077        )
4078    });
4079
4080    project_c.read_with(cx_c, |project, cx| {
4081        assert_eq!(
4082            project.diagnostic_summaries(false, cx).collect::<Vec<_>>(),
4083            []
4084        )
4085    });
4086}
4087
4088#[gpui::test(iterations = 10)]
4089async fn test_collaborating_with_lsp_progress_updates_and_diagnostics_ordering(
4090    executor: BackgroundExecutor,
4091    cx_a: &mut TestAppContext,
4092    cx_b: &mut TestAppContext,
4093) {
4094    let mut server = TestServer::start(executor.clone()).await;
4095    let client_a = server.create_client(cx_a, "user_a").await;
4096    let client_b = server.create_client(cx_b, "user_b").await;
4097    server
4098        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4099        .await;
4100
4101    client_a.language_registry().add(rust_lang());
4102    let mut fake_language_servers = client_a.language_registry().register_fake_lsp_adapter(
4103        "Rust",
4104        FakeLspAdapter {
4105            disk_based_diagnostics_progress_token: Some("the-disk-based-token".into()),
4106            disk_based_diagnostics_sources: vec!["the-disk-based-diagnostics-source".into()],
4107            ..Default::default()
4108        },
4109    );
4110
4111    let file_names = &["one.rs", "two.rs", "three.rs", "four.rs", "five.rs"];
4112    client_a
4113        .fs()
4114        .insert_tree(
4115            "/test",
4116            json!({
4117                "one.rs": "const ONE: usize = 1;",
4118                "two.rs": "const TWO: usize = 2;",
4119                "three.rs": "const THREE: usize = 3;",
4120                "four.rs": "const FOUR: usize = 3;",
4121                "five.rs": "const FIVE: usize = 3;",
4122            }),
4123        )
4124        .await;
4125
4126    let (project_a, worktree_id) = client_a.build_local_project("/test", cx_a).await;
4127
4128    // Share a project as client A
4129    let active_call_a = cx_a.read(ActiveCall::global);
4130    let project_id = active_call_a
4131        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4132        .await
4133        .unwrap();
4134
4135    // Join the project as client B and open all three files.
4136    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4137    let guest_buffers = futures::future::try_join_all(file_names.iter().map(|file_name| {
4138        project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, file_name), cx))
4139    }))
4140    .await
4141    .unwrap();
4142
4143    // Simulate a language server reporting errors for a file.
4144    let fake_language_server = fake_language_servers.next().await.unwrap();
4145    fake_language_server
4146        .request::<lsp::request::WorkDoneProgressCreate>(lsp::WorkDoneProgressCreateParams {
4147            token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4148        })
4149        .await
4150        .unwrap();
4151    fake_language_server.notify::<lsp::notification::Progress>(lsp::ProgressParams {
4152        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4153        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::Begin(
4154            lsp::WorkDoneProgressBegin {
4155                title: "Progress Began".into(),
4156                ..Default::default()
4157            },
4158        )),
4159    });
4160    for file_name in file_names {
4161        fake_language_server.notify::<lsp::notification::PublishDiagnostics>(
4162            lsp::PublishDiagnosticsParams {
4163                uri: lsp::Url::from_file_path(Path::new("/test").join(file_name)).unwrap(),
4164                version: None,
4165                diagnostics: vec![lsp::Diagnostic {
4166                    severity: Some(lsp::DiagnosticSeverity::WARNING),
4167                    source: Some("the-disk-based-diagnostics-source".into()),
4168                    range: lsp::Range::new(lsp::Position::new(0, 0), lsp::Position::new(0, 0)),
4169                    message: "message one".to_string(),
4170                    ..Default::default()
4171                }],
4172            },
4173        );
4174    }
4175    fake_language_server.notify::<lsp::notification::Progress>(lsp::ProgressParams {
4176        token: lsp::NumberOrString::String("the-disk-based-token".to_string()),
4177        value: lsp::ProgressParamsValue::WorkDone(lsp::WorkDoneProgress::End(
4178            lsp::WorkDoneProgressEnd { message: None },
4179        )),
4180    });
4181
4182    // When the "disk base diagnostics finished" message is received, the buffers'
4183    // diagnostics are expected to be present.
4184    let disk_based_diagnostics_finished = Arc::new(AtomicBool::new(false));
4185    project_b.update(cx_b, {
4186        let project_b = project_b.clone();
4187        let disk_based_diagnostics_finished = disk_based_diagnostics_finished.clone();
4188        move |_, cx| {
4189            cx.subscribe(&project_b, move |_, _, event, cx| {
4190                if let project::Event::DiskBasedDiagnosticsFinished { .. } = event {
4191                    disk_based_diagnostics_finished.store(true, SeqCst);
4192                    for buffer in &guest_buffers {
4193                        assert_eq!(
4194                            buffer
4195                                .read(cx)
4196                                .snapshot()
4197                                .diagnostics_in_range::<_, usize>(0..5, false)
4198                                .count(),
4199                            1,
4200                            "expected a diagnostic for buffer {:?}",
4201                            buffer.read(cx).file().unwrap().path(),
4202                        );
4203                    }
4204                }
4205            })
4206            .detach();
4207        }
4208    });
4209
4210    executor.run_until_parked();
4211    assert!(disk_based_diagnostics_finished.load(SeqCst));
4212}
4213
4214#[gpui::test(iterations = 10)]
4215async fn test_reloading_buffer_manually(
4216    executor: BackgroundExecutor,
4217    cx_a: &mut TestAppContext,
4218    cx_b: &mut TestAppContext,
4219) {
4220    let mut server = TestServer::start(executor.clone()).await;
4221    let client_a = server.create_client(cx_a, "user_a").await;
4222    let client_b = server.create_client(cx_b, "user_b").await;
4223    server
4224        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4225        .await;
4226    let active_call_a = cx_a.read(ActiveCall::global);
4227
4228    client_a
4229        .fs()
4230        .insert_tree("/a", json!({ "a.rs": "let one = 1;" }))
4231        .await;
4232    let (project_a, worktree_id) = client_a.build_local_project("/a", cx_a).await;
4233    let buffer_a = project_a
4234        .update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx))
4235        .await
4236        .unwrap();
4237    let project_id = active_call_a
4238        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4239        .await
4240        .unwrap();
4241
4242    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4243
4244    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4245    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4246    buffer_b.update(cx_b, |buffer, cx| {
4247        buffer.edit([(4..7, "six")], None, cx);
4248        buffer.edit([(10..11, "6")], None, cx);
4249        assert_eq!(buffer.text(), "let six = 6;");
4250        assert!(buffer.is_dirty());
4251        assert!(!buffer.has_conflict());
4252    });
4253    executor.run_until_parked();
4254
4255    buffer_a.read_with(cx_a, |buffer, _| assert_eq!(buffer.text(), "let six = 6;"));
4256
4257    client_a
4258        .fs()
4259        .save(
4260            "/a/a.rs".as_ref(),
4261            &Rope::from("let seven = 7;"),
4262            LineEnding::Unix,
4263        )
4264        .await
4265        .unwrap();
4266    executor.run_until_parked();
4267
4268    buffer_a.read_with(cx_a, |buffer, _| assert!(buffer.has_conflict()));
4269
4270    buffer_b.read_with(cx_b, |buffer, _| assert!(buffer.has_conflict()));
4271
4272    project_b
4273        .update(cx_b, |project, cx| {
4274            project.reload_buffers(HashSet::from_iter([buffer_b.clone()]), true, cx)
4275        })
4276        .await
4277        .unwrap();
4278
4279    buffer_a.read_with(cx_a, |buffer, _| {
4280        assert_eq!(buffer.text(), "let seven = 7;");
4281        assert!(!buffer.is_dirty());
4282        assert!(!buffer.has_conflict());
4283    });
4284
4285    buffer_b.read_with(cx_b, |buffer, _| {
4286        assert_eq!(buffer.text(), "let seven = 7;");
4287        assert!(!buffer.is_dirty());
4288        assert!(!buffer.has_conflict());
4289    });
4290
4291    buffer_a.update(cx_a, |buffer, cx| {
4292        // Undoing on the host is a no-op when the reload was initiated by the guest.
4293        buffer.undo(cx);
4294        assert_eq!(buffer.text(), "let seven = 7;");
4295        assert!(!buffer.is_dirty());
4296        assert!(!buffer.has_conflict());
4297    });
4298    buffer_b.update(cx_b, |buffer, cx| {
4299        // Undoing on the guest rolls back the buffer to before it was reloaded but the conflict gets cleared.
4300        buffer.undo(cx);
4301        assert_eq!(buffer.text(), "let six = 6;");
4302        assert!(buffer.is_dirty());
4303        assert!(!buffer.has_conflict());
4304    });
4305}
4306
4307#[gpui::test(iterations = 10)]
4308async fn test_formatting_buffer(
4309    executor: BackgroundExecutor,
4310    cx_a: &mut TestAppContext,
4311    cx_b: &mut TestAppContext,
4312) {
4313    executor.allow_parking();
4314    let mut server = TestServer::start(executor.clone()).await;
4315    let client_a = server.create_client(cx_a, "user_a").await;
4316    let client_b = server.create_client(cx_b, "user_b").await;
4317    server
4318        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4319        .await;
4320    let active_call_a = cx_a.read(ActiveCall::global);
4321
4322    client_a.language_registry().add(rust_lang());
4323    let mut fake_language_servers = client_a
4324        .language_registry()
4325        .register_fake_lsp_adapter("Rust", FakeLspAdapter::default());
4326
4327    // Here we insert a fake tree with a directory that exists on disk. This is needed
4328    // because later we'll invoke a command, which requires passing a working directory
4329    // that points to a valid location on disk.
4330    let directory = env::current_dir().unwrap();
4331    client_a
4332        .fs()
4333        .insert_tree(&directory, json!({ "a.rs": "let one = \"two\"" }))
4334        .await;
4335    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4336    let project_id = active_call_a
4337        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4338        .await
4339        .unwrap();
4340    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4341
4342    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4343    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4344
4345    let fake_language_server = fake_language_servers.next().await.unwrap();
4346    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4347        Ok(Some(vec![
4348            lsp::TextEdit {
4349                range: lsp::Range::new(lsp::Position::new(0, 4), lsp::Position::new(0, 4)),
4350                new_text: "h".to_string(),
4351            },
4352            lsp::TextEdit {
4353                range: lsp::Range::new(lsp::Position::new(0, 7), lsp::Position::new(0, 7)),
4354                new_text: "y".to_string(),
4355            },
4356        ]))
4357    });
4358
4359    project_b
4360        .update(cx_b, |project, cx| {
4361            project.format(
4362                HashSet::from_iter([buffer_b.clone()]),
4363                true,
4364                FormatTrigger::Save,
4365                cx,
4366            )
4367        })
4368        .await
4369        .unwrap();
4370
4371    // The edits from the LSP are applied, and a final newline is added.
4372    assert_eq!(
4373        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4374        "let honey = \"two\"\n"
4375    );
4376
4377    // Ensure buffer can be formatted using an external command. Notice how the
4378    // host's configuration is honored as opposed to using the guest's settings.
4379    cx_a.update(|cx| {
4380        cx.update_global(|store: &mut SettingsStore, cx| {
4381            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4382                file.defaults.formatter = Some(Formatter::External {
4383                    command: "awk".into(),
4384                    arguments: vec!["{sub(/two/,\"{buffer_path}\")}1".to_string()].into(),
4385                });
4386            });
4387        });
4388    });
4389    project_b
4390        .update(cx_b, |project, cx| {
4391            project.format(
4392                HashSet::from_iter([buffer_b.clone()]),
4393                true,
4394                FormatTrigger::Save,
4395                cx,
4396            )
4397        })
4398        .await
4399        .unwrap();
4400    assert_eq!(
4401        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4402        format!("let honey = \"{}/a.rs\"\n", directory.to_str().unwrap())
4403    );
4404}
4405
4406#[gpui::test(iterations = 10)]
4407async fn test_prettier_formatting_buffer(
4408    executor: BackgroundExecutor,
4409    cx_a: &mut TestAppContext,
4410    cx_b: &mut TestAppContext,
4411) {
4412    let mut server = TestServer::start(executor.clone()).await;
4413    let client_a = server.create_client(cx_a, "user_a").await;
4414    let client_b = server.create_client(cx_b, "user_b").await;
4415    server
4416        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4417        .await;
4418    let active_call_a = cx_a.read(ActiveCall::global);
4419
4420    let test_plugin = "test_plugin";
4421
4422    client_a.language_registry().add(Arc::new(Language::new(
4423        LanguageConfig {
4424            name: "Rust".into(),
4425            matcher: LanguageMatcher {
4426                path_suffixes: vec!["rs".to_string()],
4427                ..Default::default()
4428            },
4429            prettier_parser_name: Some("test_parser".to_string()),
4430            ..Default::default()
4431        },
4432        Some(tree_sitter_rust::language()),
4433    )));
4434    let mut fake_language_servers = client_a.language_registry().register_fake_lsp_adapter(
4435        "Rust",
4436        FakeLspAdapter {
4437            prettier_plugins: vec![test_plugin],
4438            ..Default::default()
4439        },
4440    );
4441
4442    // Here we insert a fake tree with a directory that exists on disk. This is needed
4443    // because later we'll invoke a command, which requires passing a working directory
4444    // that points to a valid location on disk.
4445    let directory = env::current_dir().unwrap();
4446    let buffer_text = "let one = \"two\"";
4447    client_a
4448        .fs()
4449        .insert_tree(&directory, json!({ "a.rs": buffer_text }))
4450        .await;
4451    let (project_a, worktree_id) = client_a.build_local_project(&directory, cx_a).await;
4452    let prettier_format_suffix = project::TEST_PRETTIER_FORMAT_SUFFIX;
4453    let open_buffer = project_a.update(cx_a, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4454    let buffer_a = cx_a.executor().spawn(open_buffer).await.unwrap();
4455
4456    let project_id = active_call_a
4457        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4458        .await
4459        .unwrap();
4460    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4461    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4462    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4463
4464    cx_a.update(|cx| {
4465        cx.update_global(|store: &mut SettingsStore, cx| {
4466            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4467                file.defaults.formatter = Some(Formatter::Auto);
4468            });
4469        });
4470    });
4471    cx_b.update(|cx| {
4472        cx.update_global(|store: &mut SettingsStore, cx| {
4473            store.update_user_settings::<AllLanguageSettings>(cx, |file| {
4474                file.defaults.formatter = Some(Formatter::LanguageServer);
4475            });
4476        });
4477    });
4478    let fake_language_server = fake_language_servers.next().await.unwrap();
4479    fake_language_server.handle_request::<lsp::request::Formatting, _, _>(|_, _| async move {
4480        panic!(
4481            "Unexpected: prettier should be preferred since it's enabled and language supports it"
4482        )
4483    });
4484
4485    project_b
4486        .update(cx_b, |project, cx| {
4487            project.format(
4488                HashSet::from_iter([buffer_b.clone()]),
4489                true,
4490                FormatTrigger::Save,
4491                cx,
4492            )
4493        })
4494        .await
4495        .unwrap();
4496
4497    executor.run_until_parked();
4498    assert_eq!(
4499        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4500        buffer_text.to_string() + "\n" + prettier_format_suffix,
4501        "Prettier formatting was not applied to client buffer after client's request"
4502    );
4503
4504    project_a
4505        .update(cx_a, |project, cx| {
4506            project.format(
4507                HashSet::from_iter([buffer_a.clone()]),
4508                true,
4509                FormatTrigger::Manual,
4510                cx,
4511            )
4512        })
4513        .await
4514        .unwrap();
4515
4516    executor.run_until_parked();
4517    assert_eq!(
4518        buffer_b.read_with(cx_b, |buffer, _| buffer.text()),
4519        buffer_text.to_string() + "\n" + prettier_format_suffix + "\n" + prettier_format_suffix,
4520        "Prettier formatting was not applied to client buffer after host's request"
4521    );
4522}
4523
4524#[gpui::test(iterations = 10)]
4525async fn test_definition(
4526    executor: BackgroundExecutor,
4527    cx_a: &mut TestAppContext,
4528    cx_b: &mut TestAppContext,
4529) {
4530    let mut server = TestServer::start(executor.clone()).await;
4531    let client_a = server.create_client(cx_a, "user_a").await;
4532    let client_b = server.create_client(cx_b, "user_b").await;
4533    server
4534        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4535        .await;
4536    let active_call_a = cx_a.read(ActiveCall::global);
4537
4538    let mut fake_language_servers = client_a
4539        .language_registry()
4540        .register_fake_lsp_adapter("Rust", Default::default());
4541    client_a.language_registry().add(rust_lang());
4542
4543    client_a
4544        .fs()
4545        .insert_tree(
4546            "/root",
4547            json!({
4548                "dir-1": {
4549                    "a.rs": "const ONE: usize = b::TWO + b::THREE;",
4550                },
4551                "dir-2": {
4552                    "b.rs": "const TWO: c::T2 = 2;\nconst THREE: usize = 3;",
4553                    "c.rs": "type T2 = usize;",
4554                }
4555            }),
4556        )
4557        .await;
4558    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4559    let project_id = active_call_a
4560        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4561        .await
4562        .unwrap();
4563    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4564
4565    // Open the file on client B.
4566    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
4567    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4568
4569    // Request the definition of a symbol as the guest.
4570    let fake_language_server = fake_language_servers.next().await.unwrap();
4571    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4572        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4573            lsp::Location::new(
4574                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4575                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
4576            ),
4577        )))
4578    });
4579
4580    let definitions_1 = project_b
4581        .update(cx_b, |p, cx| p.definition(&buffer_b, 23, cx))
4582        .await
4583        .unwrap();
4584    cx_b.read(|cx| {
4585        assert_eq!(definitions_1.len(), 1);
4586        assert_eq!(project_b.read(cx).worktrees().count(), 2);
4587        let target_buffer = definitions_1[0].target.buffer.read(cx);
4588        assert_eq!(
4589            target_buffer.text(),
4590            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4591        );
4592        assert_eq!(
4593            definitions_1[0].target.range.to_point(target_buffer),
4594            Point::new(0, 6)..Point::new(0, 9)
4595        );
4596    });
4597
4598    // Try getting more definitions for the same buffer, ensuring the buffer gets reused from
4599    // the previous call to `definition`.
4600    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
4601        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4602            lsp::Location::new(
4603                lsp::Url::from_file_path("/root/dir-2/b.rs").unwrap(),
4604                lsp::Range::new(lsp::Position::new(1, 6), lsp::Position::new(1, 11)),
4605            ),
4606        )))
4607    });
4608
4609    let definitions_2 = project_b
4610        .update(cx_b, |p, cx| p.definition(&buffer_b, 33, cx))
4611        .await
4612        .unwrap();
4613    cx_b.read(|cx| {
4614        assert_eq!(definitions_2.len(), 1);
4615        assert_eq!(project_b.read(cx).worktrees().count(), 2);
4616        let target_buffer = definitions_2[0].target.buffer.read(cx);
4617        assert_eq!(
4618            target_buffer.text(),
4619            "const TWO: c::T2 = 2;\nconst THREE: usize = 3;"
4620        );
4621        assert_eq!(
4622            definitions_2[0].target.range.to_point(target_buffer),
4623            Point::new(1, 6)..Point::new(1, 11)
4624        );
4625    });
4626    assert_eq!(
4627        definitions_1[0].target.buffer,
4628        definitions_2[0].target.buffer
4629    );
4630
4631    fake_language_server.handle_request::<lsp::request::GotoTypeDefinition, _, _>(
4632        |req, _| async move {
4633            assert_eq!(
4634                req.text_document_position_params.position,
4635                lsp::Position::new(0, 7)
4636            );
4637            Ok(Some(lsp::GotoDefinitionResponse::Scalar(
4638                lsp::Location::new(
4639                    lsp::Url::from_file_path("/root/dir-2/c.rs").unwrap(),
4640                    lsp::Range::new(lsp::Position::new(0, 5), lsp::Position::new(0, 7)),
4641                ),
4642            )))
4643        },
4644    );
4645
4646    let type_definitions = project_b
4647        .update(cx_b, |p, cx| p.type_definition(&buffer_b, 7, cx))
4648        .await
4649        .unwrap();
4650    cx_b.read(|cx| {
4651        assert_eq!(type_definitions.len(), 1);
4652        let target_buffer = type_definitions[0].target.buffer.read(cx);
4653        assert_eq!(target_buffer.text(), "type T2 = usize;");
4654        assert_eq!(
4655            type_definitions[0].target.range.to_point(target_buffer),
4656            Point::new(0, 5)..Point::new(0, 7)
4657        );
4658    });
4659}
4660
4661#[gpui::test(iterations = 10)]
4662async fn test_references(
4663    executor: BackgroundExecutor,
4664    cx_a: &mut TestAppContext,
4665    cx_b: &mut TestAppContext,
4666) {
4667    let mut server = TestServer::start(executor.clone()).await;
4668    let client_a = server.create_client(cx_a, "user_a").await;
4669    let client_b = server.create_client(cx_b, "user_b").await;
4670    server
4671        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4672        .await;
4673    let active_call_a = cx_a.read(ActiveCall::global);
4674
4675    client_a.language_registry().add(rust_lang());
4676    let mut fake_language_servers = client_a.language_registry().register_fake_lsp_adapter(
4677        "Rust",
4678        FakeLspAdapter {
4679            name: "my-fake-lsp-adapter",
4680            capabilities: lsp::ServerCapabilities {
4681                references_provider: Some(lsp::OneOf::Left(true)),
4682                ..Default::default()
4683            },
4684            ..Default::default()
4685        },
4686    );
4687
4688    client_a
4689        .fs()
4690        .insert_tree(
4691            "/root",
4692            json!({
4693                "dir-1": {
4694                    "one.rs": "const ONE: usize = 1;",
4695                    "two.rs": "const TWO: usize = one::ONE + one::ONE;",
4696                },
4697                "dir-2": {
4698                    "three.rs": "const THREE: usize = two::TWO + one::ONE;",
4699                }
4700            }),
4701        )
4702        .await;
4703    let (project_a, worktree_id) = client_a.build_local_project("/root/dir-1", cx_a).await;
4704    let project_id = active_call_a
4705        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4706        .await
4707        .unwrap();
4708    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4709
4710    // Open the file on client B.
4711    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "one.rs"), cx));
4712    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
4713
4714    // Request references to a symbol as the guest.
4715    let fake_language_server = fake_language_servers.next().await.unwrap();
4716    let (lsp_response_tx, rx) = mpsc::unbounded::<Result<Option<Vec<lsp::Location>>>>();
4717    fake_language_server.handle_request::<lsp::request::References, _, _>({
4718        let rx = Arc::new(Mutex::new(Some(rx)));
4719        move |params, _| {
4720            assert_eq!(
4721                params.text_document_position.text_document.uri.as_str(),
4722                "file:///root/dir-1/one.rs"
4723            );
4724            let rx = rx.clone();
4725            async move {
4726                let mut response_rx = rx.lock().take().unwrap();
4727                let result = response_rx.next().await.unwrap();
4728                *rx.lock() = Some(response_rx);
4729                result
4730            }
4731        }
4732    });
4733
4734    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4735
4736    // User is informed that a request is pending.
4737    executor.run_until_parked();
4738    project_b.read_with(cx_b, |project, _| {
4739        let status = project.language_server_statuses().next().cloned().unwrap();
4740        assert_eq!(status.name, "my-fake-lsp-adapter");
4741        assert_eq!(
4742            status.pending_work.values().next().unwrap().message,
4743            Some("Finding references...".into())
4744        );
4745    });
4746
4747    // Cause the language server to respond.
4748    lsp_response_tx
4749        .unbounded_send(Ok(Some(vec![
4750            lsp::Location {
4751                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4752                range: lsp::Range::new(lsp::Position::new(0, 24), lsp::Position::new(0, 27)),
4753            },
4754            lsp::Location {
4755                uri: lsp::Url::from_file_path("/root/dir-1/two.rs").unwrap(),
4756                range: lsp::Range::new(lsp::Position::new(0, 35), lsp::Position::new(0, 38)),
4757            },
4758            lsp::Location {
4759                uri: lsp::Url::from_file_path("/root/dir-2/three.rs").unwrap(),
4760                range: lsp::Range::new(lsp::Position::new(0, 37), lsp::Position::new(0, 40)),
4761            },
4762        ])))
4763        .unwrap();
4764
4765    let references = references.await.unwrap();
4766    executor.run_until_parked();
4767    project_b.read_with(cx_b, |project, cx| {
4768        // User is informed that a request is no longer pending.
4769        let status = project.language_server_statuses().next().unwrap();
4770        assert!(status.pending_work.is_empty());
4771
4772        assert_eq!(references.len(), 3);
4773        assert_eq!(project.worktrees().count(), 2);
4774
4775        let two_buffer = references[0].buffer.read(cx);
4776        let three_buffer = references[2].buffer.read(cx);
4777        assert_eq!(
4778            two_buffer.file().unwrap().path().as_ref(),
4779            Path::new("two.rs")
4780        );
4781        assert_eq!(references[1].buffer, references[0].buffer);
4782        assert_eq!(
4783            three_buffer.file().unwrap().full_path(cx),
4784            Path::new("/root/dir-2/three.rs")
4785        );
4786
4787        assert_eq!(references[0].range.to_offset(two_buffer), 24..27);
4788        assert_eq!(references[1].range.to_offset(two_buffer), 35..38);
4789        assert_eq!(references[2].range.to_offset(three_buffer), 37..40);
4790    });
4791
4792    let references = project_b.update(cx_b, |p, cx| p.references(&buffer_b, 7, cx));
4793
4794    // User is informed that a request is pending.
4795    executor.run_until_parked();
4796    project_b.read_with(cx_b, |project, _| {
4797        let status = project.language_server_statuses().next().cloned().unwrap();
4798        assert_eq!(status.name, "my-fake-lsp-adapter");
4799        assert_eq!(
4800            status.pending_work.values().next().unwrap().message,
4801            Some("Finding references...".into())
4802        );
4803    });
4804
4805    // Cause the LSP request to fail.
4806    lsp_response_tx
4807        .unbounded_send(Err(anyhow!("can't find references")))
4808        .unwrap();
4809    references.await.unwrap_err();
4810
4811    // User is informed that the request is no longer pending.
4812    executor.run_until_parked();
4813    project_b.read_with(cx_b, |project, _| {
4814        let status = project.language_server_statuses().next().unwrap();
4815        assert!(status.pending_work.is_empty());
4816    });
4817}
4818
4819#[gpui::test(iterations = 10)]
4820async fn test_project_search(
4821    executor: BackgroundExecutor,
4822    cx_a: &mut TestAppContext,
4823    cx_b: &mut TestAppContext,
4824) {
4825    let mut server = TestServer::start(executor.clone()).await;
4826    let client_a = server.create_client(cx_a, "user_a").await;
4827    let client_b = server.create_client(cx_b, "user_b").await;
4828    server
4829        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4830        .await;
4831    let active_call_a = cx_a.read(ActiveCall::global);
4832
4833    client_a
4834        .fs()
4835        .insert_tree(
4836            "/root",
4837            json!({
4838                "dir-1": {
4839                    "a": "hello world",
4840                    "b": "goodnight moon",
4841                    "c": "a world of goo",
4842                    "d": "world champion of clown world",
4843                },
4844                "dir-2": {
4845                    "e": "disney world is fun",
4846                }
4847            }),
4848        )
4849        .await;
4850    let (project_a, _) = client_a.build_local_project("/root/dir-1", cx_a).await;
4851    let (worktree_2, _) = project_a
4852        .update(cx_a, |p, cx| {
4853            p.find_or_create_local_worktree("/root/dir-2", true, cx)
4854        })
4855        .await
4856        .unwrap();
4857    worktree_2
4858        .read_with(cx_a, |tree, _| tree.as_local().unwrap().scan_complete())
4859        .await;
4860    let project_id = active_call_a
4861        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4862        .await
4863        .unwrap();
4864
4865    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4866
4867    // Perform a search as the guest.
4868    let mut results = HashMap::default();
4869    let mut search_rx = project_b.update(cx_b, |project, cx| {
4870        project.search(
4871            SearchQuery::text("world", false, false, false, Vec::new(), Vec::new()).unwrap(),
4872            cx,
4873        )
4874    });
4875    while let Some(result) = search_rx.next().await {
4876        match result {
4877            SearchResult::Buffer { buffer, ranges } => {
4878                results.entry(buffer).or_insert(ranges);
4879            }
4880            SearchResult::LimitReached => {
4881                panic!("Unexpectedly reached search limit in tests. If you do want to assert limit-reached, change this panic call.")
4882            }
4883        };
4884    }
4885
4886    let mut ranges_by_path = results
4887        .into_iter()
4888        .map(|(buffer, ranges)| {
4889            buffer.read_with(cx_b, |buffer, cx| {
4890                let path = buffer.file().unwrap().full_path(cx);
4891                let offset_ranges = ranges
4892                    .into_iter()
4893                    .map(|range| range.to_offset(buffer))
4894                    .collect::<Vec<_>>();
4895                (path, offset_ranges)
4896            })
4897        })
4898        .collect::<Vec<_>>();
4899    ranges_by_path.sort_by_key(|(path, _)| path.clone());
4900
4901    assert_eq!(
4902        ranges_by_path,
4903        &[
4904            (PathBuf::from("dir-1/a"), vec![6..11]),
4905            (PathBuf::from("dir-1/c"), vec![2..7]),
4906            (PathBuf::from("dir-1/d"), vec![0..5, 24..29]),
4907            (PathBuf::from("dir-2/e"), vec![7..12]),
4908        ]
4909    );
4910}
4911
4912#[gpui::test(iterations = 10)]
4913async fn test_document_highlights(
4914    executor: BackgroundExecutor,
4915    cx_a: &mut TestAppContext,
4916    cx_b: &mut TestAppContext,
4917) {
4918    let mut server = TestServer::start(executor.clone()).await;
4919    let client_a = server.create_client(cx_a, "user_a").await;
4920    let client_b = server.create_client(cx_b, "user_b").await;
4921    server
4922        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
4923        .await;
4924    let active_call_a = cx_a.read(ActiveCall::global);
4925
4926    client_a
4927        .fs()
4928        .insert_tree(
4929            "/root-1",
4930            json!({
4931                "main.rs": "fn double(number: i32) -> i32 { number + number }",
4932            }),
4933        )
4934        .await;
4935
4936    let mut fake_language_servers = client_a
4937        .language_registry()
4938        .register_fake_lsp_adapter("Rust", Default::default());
4939    client_a.language_registry().add(rust_lang());
4940
4941    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
4942    let project_id = active_call_a
4943        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
4944        .await
4945        .unwrap();
4946    let project_b = client_b.build_remote_project(project_id, cx_b).await;
4947
4948    // Open the file on client B.
4949    let open_b = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "main.rs"), cx));
4950    let buffer_b = cx_b.executor().spawn(open_b).await.unwrap();
4951
4952    // Request document highlights as the guest.
4953    let fake_language_server = fake_language_servers.next().await.unwrap();
4954    fake_language_server.handle_request::<lsp::request::DocumentHighlightRequest, _, _>(
4955        |params, _| async move {
4956            assert_eq!(
4957                params
4958                    .text_document_position_params
4959                    .text_document
4960                    .uri
4961                    .as_str(),
4962                "file:///root-1/main.rs"
4963            );
4964            assert_eq!(
4965                params.text_document_position_params.position,
4966                lsp::Position::new(0, 34)
4967            );
4968            Ok(Some(vec![
4969                lsp::DocumentHighlight {
4970                    kind: Some(lsp::DocumentHighlightKind::WRITE),
4971                    range: lsp::Range::new(lsp::Position::new(0, 10), lsp::Position::new(0, 16)),
4972                },
4973                lsp::DocumentHighlight {
4974                    kind: Some(lsp::DocumentHighlightKind::READ),
4975                    range: lsp::Range::new(lsp::Position::new(0, 32), lsp::Position::new(0, 38)),
4976                },
4977                lsp::DocumentHighlight {
4978                    kind: Some(lsp::DocumentHighlightKind::READ),
4979                    range: lsp::Range::new(lsp::Position::new(0, 41), lsp::Position::new(0, 47)),
4980                },
4981            ]))
4982        },
4983    );
4984
4985    let highlights = project_b
4986        .update(cx_b, |p, cx| p.document_highlights(&buffer_b, 34, cx))
4987        .await
4988        .unwrap();
4989
4990    buffer_b.read_with(cx_b, |buffer, _| {
4991        let snapshot = buffer.snapshot();
4992
4993        let highlights = highlights
4994            .into_iter()
4995            .map(|highlight| (highlight.kind, highlight.range.to_offset(&snapshot)))
4996            .collect::<Vec<_>>();
4997        assert_eq!(
4998            highlights,
4999            &[
5000                (lsp::DocumentHighlightKind::WRITE, 10..16),
5001                (lsp::DocumentHighlightKind::READ, 32..38),
5002                (lsp::DocumentHighlightKind::READ, 41..47)
5003            ]
5004        )
5005    });
5006}
5007
5008#[gpui::test(iterations = 10)]
5009async fn test_lsp_hover(
5010    executor: BackgroundExecutor,
5011    cx_a: &mut TestAppContext,
5012    cx_b: &mut TestAppContext,
5013) {
5014    let mut server = TestServer::start(executor.clone()).await;
5015    let client_a = server.create_client(cx_a, "user_a").await;
5016    let client_b = server.create_client(cx_b, "user_b").await;
5017    server
5018        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5019        .await;
5020    let active_call_a = cx_a.read(ActiveCall::global);
5021
5022    client_a
5023        .fs()
5024        .insert_tree(
5025            "/root-1",
5026            json!({
5027                "main.rs": "use std::collections::HashMap;",
5028            }),
5029        )
5030        .await;
5031
5032    client_a.language_registry().add(rust_lang());
5033    let language_server_names = ["rust-analyzer", "CrabLang-ls"];
5034    let mut fake_language_servers = client_a
5035        .language_registry()
5036        .register_specific_fake_lsp_adapter(
5037            "Rust",
5038            true,
5039            FakeLspAdapter {
5040                name: "rust-analyzer",
5041                capabilities: lsp::ServerCapabilities {
5042                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5043                    ..lsp::ServerCapabilities::default()
5044                },
5045                ..FakeLspAdapter::default()
5046            },
5047        );
5048    let _other_server = client_a
5049        .language_registry()
5050        .register_specific_fake_lsp_adapter(
5051            "Rust",
5052            false,
5053            FakeLspAdapter {
5054                name: "CrabLang-ls",
5055                capabilities: lsp::ServerCapabilities {
5056                    hover_provider: Some(lsp::HoverProviderCapability::Simple(true)),
5057                    ..lsp::ServerCapabilities::default()
5058                },
5059                ..FakeLspAdapter::default()
5060            },
5061        );
5062
5063    let (project_a, worktree_id) = client_a.build_local_project("/root-1", cx_a).await;
5064    let project_id = active_call_a
5065        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5066        .await
5067        .unwrap();
5068    let project_b = client_b.build_remote_project(project_id, cx_b).await;
5069
5070    // Open the file as the guest
5071    let open_buffer = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "main.rs"), cx));
5072    let buffer_b = cx_b.executor().spawn(open_buffer).await.unwrap();
5073
5074    let mut servers_with_hover_requests = HashMap::default();
5075    for i in 0..language_server_names.len() {
5076        let new_server = fake_language_servers.next().await.unwrap_or_else(|| {
5077            panic!(
5078                "Failed to get language server #{i} with name {}",
5079                &language_server_names[i]
5080            )
5081        });
5082        let new_server_name = new_server.server.name();
5083        assert!(
5084            !servers_with_hover_requests.contains_key(new_server_name),
5085            "Unexpected: initialized server with the same name twice. Name: `{new_server_name}`"
5086        );
5087        let new_server_name = new_server_name.to_string();
5088        match new_server_name.as_str() {
5089            "CrabLang-ls" => {
5090                servers_with_hover_requests.insert(
5091                    new_server_name.clone(),
5092                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5093                        move |params, _| {
5094                            assert_eq!(
5095                                params
5096                                    .text_document_position_params
5097                                    .text_document
5098                                    .uri
5099                                    .as_str(),
5100                                "file:///root-1/main.rs"
5101                            );
5102                            let name = new_server_name.clone();
5103                            async move {
5104                                Ok(Some(lsp::Hover {
5105                                    contents: lsp::HoverContents::Scalar(
5106                                        lsp::MarkedString::String(format!("{name} hover")),
5107                                    ),
5108                                    range: None,
5109                                }))
5110                            }
5111                        },
5112                    ),
5113                );
5114            }
5115            "rust-analyzer" => {
5116                servers_with_hover_requests.insert(
5117                    new_server_name.clone(),
5118                    new_server.handle_request::<lsp::request::HoverRequest, _, _>(
5119                        |params, _| async move {
5120                            assert_eq!(
5121                                params
5122                                    .text_document_position_params
5123                                    .text_document
5124                                    .uri
5125                                    .as_str(),
5126                                "file:///root-1/main.rs"
5127                            );
5128                            assert_eq!(
5129                                params.text_document_position_params.position,
5130                                lsp::Position::new(0, 22)
5131                            );
5132                            Ok(Some(lsp::Hover {
5133                                contents: lsp::HoverContents::Array(vec![
5134                                    lsp::MarkedString::String("Test hover content.".to_string()),
5135                                    lsp::MarkedString::LanguageString(lsp::LanguageString {
5136                                        language: "Rust".to_string(),
5137                                        value: "let foo = 42;".to_string(),
5138                                    }),
5139                                ]),
5140                                range: Some(lsp::Range::new(
5141                                    lsp::Position::new(0, 22),
5142                                    lsp::Position::new(0, 29),
5143                                )),
5144                            }))
5145                        },
5146                    ),
5147                );
5148            }
5149            unexpected => panic!("Unexpected server name: {unexpected}"),
5150        }
5151    }
5152
5153    // Request hover information as the guest.
5154    let mut hovers = project_b
5155        .update(cx_b, |p, cx| p.hover(&buffer_b, 22, cx))
5156        .await;
5157    assert_eq!(
5158        hovers.len(),
5159        2,
5160        "Expected two hovers from both language servers, but got: {hovers:?}"
5161    );
5162
5163    let _: Vec<()> = futures::future::join_all(servers_with_hover_requests.into_values().map(
5164        |mut hover_request| async move {
5165            hover_request
5166                .next()
5167                .await
5168                .expect("All hover requests should have been triggered")
5169        },
5170    ))
5171    .await;
5172
5173    hovers.sort_by_key(|hover| hover.contents.len());
5174    let first_hover = hovers.first().cloned().unwrap();
5175    assert_eq!(
5176        first_hover.contents,
5177        vec![project::HoverBlock {
5178            text: "CrabLang-ls hover".to_string(),
5179            kind: HoverBlockKind::Markdown,
5180        },]
5181    );
5182    let second_hover = hovers.last().cloned().unwrap();
5183    assert_eq!(
5184        second_hover.contents,
5185        vec![
5186            project::HoverBlock {
5187                text: "Test hover content.".to_string(),
5188                kind: HoverBlockKind::Markdown,
5189            },
5190            project::HoverBlock {
5191                text: "let foo = 42;".to_string(),
5192                kind: HoverBlockKind::Code {
5193                    language: "Rust".to_string()
5194                },
5195            }
5196        ]
5197    );
5198    buffer_b.read_with(cx_b, |buffer, _| {
5199        let snapshot = buffer.snapshot();
5200        assert_eq!(second_hover.range.unwrap().to_offset(&snapshot), 22..29);
5201    });
5202}
5203
5204#[gpui::test(iterations = 10)]
5205async fn test_project_symbols(
5206    executor: BackgroundExecutor,
5207    cx_a: &mut TestAppContext,
5208    cx_b: &mut TestAppContext,
5209) {
5210    let mut server = TestServer::start(executor.clone()).await;
5211    let client_a = server.create_client(cx_a, "user_a").await;
5212    let client_b = server.create_client(cx_b, "user_b").await;
5213    server
5214        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5215        .await;
5216    let active_call_a = cx_a.read(ActiveCall::global);
5217
5218    client_a.language_registry().add(rust_lang());
5219    let mut fake_language_servers = client_a
5220        .language_registry()
5221        .register_fake_lsp_adapter("Rust", Default::default());
5222
5223    client_a
5224        .fs()
5225        .insert_tree(
5226            "/code",
5227            json!({
5228                "crate-1": {
5229                    "one.rs": "const ONE: usize = 1;",
5230                },
5231                "crate-2": {
5232                    "two.rs": "const TWO: usize = 2; const THREE: usize = 3;",
5233                },
5234                "private": {
5235                    "passwords.txt": "the-password",
5236                }
5237            }),
5238        )
5239        .await;
5240    let (project_a, worktree_id) = client_a.build_local_project("/code/crate-1", cx_a).await;
5241    let project_id = active_call_a
5242        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5243        .await
5244        .unwrap();
5245    let project_b = client_b.build_remote_project(project_id, cx_b).await;
5246
5247    // Cause the language server to start.
5248    let open_buffer_task =
5249        project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "one.rs"), cx));
5250    let _buffer = cx_b.executor().spawn(open_buffer_task).await.unwrap();
5251
5252    let fake_language_server = fake_language_servers.next().await.unwrap();
5253    fake_language_server.handle_request::<lsp::WorkspaceSymbolRequest, _, _>(|_, _| async move {
5254        Ok(Some(lsp::WorkspaceSymbolResponse::Flat(vec![
5255            #[allow(deprecated)]
5256            lsp::SymbolInformation {
5257                name: "TWO".into(),
5258                location: lsp::Location {
5259                    uri: lsp::Url::from_file_path("/code/crate-2/two.rs").unwrap(),
5260                    range: lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5261                },
5262                kind: lsp::SymbolKind::CONSTANT,
5263                tags: None,
5264                container_name: None,
5265                deprecated: None,
5266            },
5267        ])))
5268    });
5269
5270    // Request the definition of a symbol as the guest.
5271    let symbols = project_b
5272        .update(cx_b, |p, cx| p.symbols("two", cx))
5273        .await
5274        .unwrap();
5275    assert_eq!(symbols.len(), 1);
5276    assert_eq!(symbols[0].name, "TWO");
5277
5278    // Open one of the returned symbols.
5279    let buffer_b_2 = project_b
5280        .update(cx_b, |project, cx| {
5281            project.open_buffer_for_symbol(&symbols[0], cx)
5282        })
5283        .await
5284        .unwrap();
5285
5286    buffer_b_2.read_with(cx_b, |buffer, cx| {
5287        assert_eq!(
5288            buffer.file().unwrap().full_path(cx),
5289            Path::new("/code/crate-2/two.rs")
5290        );
5291    });
5292
5293    // Attempt to craft a symbol and violate host's privacy by opening an arbitrary file.
5294    let mut fake_symbol = symbols[0].clone();
5295    fake_symbol.path.path = Path::new("/code/secrets").into();
5296    let error = project_b
5297        .update(cx_b, |project, cx| {
5298            project.open_buffer_for_symbol(&fake_symbol, cx)
5299        })
5300        .await
5301        .unwrap_err();
5302    assert!(error.to_string().contains("invalid symbol signature"));
5303}
5304
5305#[gpui::test(iterations = 10)]
5306async fn test_open_buffer_while_getting_definition_pointing_to_it(
5307    executor: BackgroundExecutor,
5308    cx_a: &mut TestAppContext,
5309    cx_b: &mut TestAppContext,
5310    mut rng: StdRng,
5311) {
5312    let mut server = TestServer::start(executor.clone()).await;
5313    let client_a = server.create_client(cx_a, "user_a").await;
5314    let client_b = server.create_client(cx_b, "user_b").await;
5315    server
5316        .create_room(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5317        .await;
5318    let active_call_a = cx_a.read(ActiveCall::global);
5319
5320    client_a.language_registry().add(rust_lang());
5321    let mut fake_language_servers = client_a
5322        .language_registry()
5323        .register_fake_lsp_adapter("Rust", Default::default());
5324
5325    client_a
5326        .fs()
5327        .insert_tree(
5328            "/root",
5329            json!({
5330                "a.rs": "const ONE: usize = b::TWO;",
5331                "b.rs": "const TWO: usize = 2",
5332            }),
5333        )
5334        .await;
5335    let (project_a, worktree_id) = client_a.build_local_project("/root", cx_a).await;
5336    let project_id = active_call_a
5337        .update(cx_a, |call, cx| call.share_project(project_a.clone(), cx))
5338        .await
5339        .unwrap();
5340    let project_b = client_b.build_remote_project(project_id, cx_b).await;
5341
5342    let open_buffer_task = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "a.rs"), cx));
5343    let buffer_b1 = cx_b.executor().spawn(open_buffer_task).await.unwrap();
5344
5345    let fake_language_server = fake_language_servers.next().await.unwrap();
5346    fake_language_server.handle_request::<lsp::request::GotoDefinition, _, _>(|_, _| async move {
5347        Ok(Some(lsp::GotoDefinitionResponse::Scalar(
5348            lsp::Location::new(
5349                lsp::Url::from_file_path("/root/b.rs").unwrap(),
5350                lsp::Range::new(lsp::Position::new(0, 6), lsp::Position::new(0, 9)),
5351            ),
5352        )))
5353    });
5354
5355    let definitions;
5356    let buffer_b2;
5357    if rng.gen() {
5358        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5359        buffer_b2 = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "b.rs"), cx));
5360    } else {
5361        buffer_b2 = project_b.update(cx_b, |p, cx| p.open_buffer((worktree_id, "b.rs"), cx));
5362        definitions = project_b.update(cx_b, |p, cx| p.definition(&buffer_b1, 23, cx));
5363    }
5364
5365    let buffer_b2 = buffer_b2.await.unwrap();
5366    let definitions = definitions.await.unwrap();
5367    assert_eq!(definitions.len(), 1);
5368    assert_eq!(definitions[0].target.buffer, buffer_b2);
5369}
5370
5371#[gpui::test(iterations = 10)]
5372async fn test_contacts(
5373    executor: BackgroundExecutor,
5374    cx_a: &mut TestAppContext,
5375    cx_b: &mut TestAppContext,
5376    cx_c: &mut TestAppContext,
5377    cx_d: &mut TestAppContext,
5378) {
5379    let mut server = TestServer::start(executor.clone()).await;
5380    let client_a = server.create_client(cx_a, "user_a").await;
5381    let client_b = server.create_client(cx_b, "user_b").await;
5382    let client_c = server.create_client(cx_c, "user_c").await;
5383    let client_d = server.create_client(cx_d, "user_d").await;
5384    server
5385        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b), (&client_c, cx_c)])
5386        .await;
5387    let active_call_a = cx_a.read(ActiveCall::global);
5388    let active_call_b = cx_b.read(ActiveCall::global);
5389    let active_call_c = cx_c.read(ActiveCall::global);
5390    let _active_call_d = cx_d.read(ActiveCall::global);
5391
5392    executor.run_until_parked();
5393    assert_eq!(
5394        contacts(&client_a, cx_a),
5395        [
5396            ("user_b".to_string(), "online", "free"),
5397            ("user_c".to_string(), "online", "free")
5398        ]
5399    );
5400    assert_eq!(
5401        contacts(&client_b, cx_b),
5402        [
5403            ("user_a".to_string(), "online", "free"),
5404            ("user_c".to_string(), "online", "free")
5405        ]
5406    );
5407    assert_eq!(
5408        contacts(&client_c, cx_c),
5409        [
5410            ("user_a".to_string(), "online", "free"),
5411            ("user_b".to_string(), "online", "free")
5412        ]
5413    );
5414    assert_eq!(contacts(&client_d, cx_d), []);
5415
5416    server.disconnect_client(client_c.peer_id().unwrap());
5417    server.forbid_connections();
5418    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5419    assert_eq!(
5420        contacts(&client_a, cx_a),
5421        [
5422            ("user_b".to_string(), "online", "free"),
5423            ("user_c".to_string(), "offline", "free")
5424        ]
5425    );
5426    assert_eq!(
5427        contacts(&client_b, cx_b),
5428        [
5429            ("user_a".to_string(), "online", "free"),
5430            ("user_c".to_string(), "offline", "free")
5431        ]
5432    );
5433    assert_eq!(contacts(&client_c, cx_c), []);
5434    assert_eq!(contacts(&client_d, cx_d), []);
5435
5436    server.allow_connections();
5437    client_c
5438        .authenticate_and_connect(false, &cx_c.to_async())
5439        .await
5440        .unwrap();
5441
5442    executor.run_until_parked();
5443    assert_eq!(
5444        contacts(&client_a, cx_a),
5445        [
5446            ("user_b".to_string(), "online", "free"),
5447            ("user_c".to_string(), "online", "free")
5448        ]
5449    );
5450    assert_eq!(
5451        contacts(&client_b, cx_b),
5452        [
5453            ("user_a".to_string(), "online", "free"),
5454            ("user_c".to_string(), "online", "free")
5455        ]
5456    );
5457    assert_eq!(
5458        contacts(&client_c, cx_c),
5459        [
5460            ("user_a".to_string(), "online", "free"),
5461            ("user_b".to_string(), "online", "free")
5462        ]
5463    );
5464    assert_eq!(contacts(&client_d, cx_d), []);
5465
5466    active_call_a
5467        .update(cx_a, |call, cx| {
5468            call.invite(client_b.user_id().unwrap(), None, cx)
5469        })
5470        .await
5471        .unwrap();
5472    executor.run_until_parked();
5473    assert_eq!(
5474        contacts(&client_a, cx_a),
5475        [
5476            ("user_b".to_string(), "online", "busy"),
5477            ("user_c".to_string(), "online", "free")
5478        ]
5479    );
5480    assert_eq!(
5481        contacts(&client_b, cx_b),
5482        [
5483            ("user_a".to_string(), "online", "busy"),
5484            ("user_c".to_string(), "online", "free")
5485        ]
5486    );
5487    assert_eq!(
5488        contacts(&client_c, cx_c),
5489        [
5490            ("user_a".to_string(), "online", "busy"),
5491            ("user_b".to_string(), "online", "busy")
5492        ]
5493    );
5494    assert_eq!(contacts(&client_d, cx_d), []);
5495
5496    // Client B and client D become contacts while client B is being called.
5497    server
5498        .make_contacts(&mut [(&client_b, cx_b), (&client_d, cx_d)])
5499        .await;
5500    executor.run_until_parked();
5501    assert_eq!(
5502        contacts(&client_a, cx_a),
5503        [
5504            ("user_b".to_string(), "online", "busy"),
5505            ("user_c".to_string(), "online", "free")
5506        ]
5507    );
5508    assert_eq!(
5509        contacts(&client_b, cx_b),
5510        [
5511            ("user_a".to_string(), "online", "busy"),
5512            ("user_c".to_string(), "online", "free"),
5513            ("user_d".to_string(), "online", "free"),
5514        ]
5515    );
5516    assert_eq!(
5517        contacts(&client_c, cx_c),
5518        [
5519            ("user_a".to_string(), "online", "busy"),
5520            ("user_b".to_string(), "online", "busy")
5521        ]
5522    );
5523    assert_eq!(
5524        contacts(&client_d, cx_d),
5525        [("user_b".to_string(), "online", "busy")]
5526    );
5527
5528    active_call_b.update(cx_b, |call, cx| call.decline_incoming(cx).unwrap());
5529    executor.run_until_parked();
5530    assert_eq!(
5531        contacts(&client_a, cx_a),
5532        [
5533            ("user_b".to_string(), "online", "free"),
5534            ("user_c".to_string(), "online", "free")
5535        ]
5536    );
5537    assert_eq!(
5538        contacts(&client_b, cx_b),
5539        [
5540            ("user_a".to_string(), "online", "free"),
5541            ("user_c".to_string(), "online", "free"),
5542            ("user_d".to_string(), "online", "free")
5543        ]
5544    );
5545    assert_eq!(
5546        contacts(&client_c, cx_c),
5547        [
5548            ("user_a".to_string(), "online", "free"),
5549            ("user_b".to_string(), "online", "free")
5550        ]
5551    );
5552    assert_eq!(
5553        contacts(&client_d, cx_d),
5554        [("user_b".to_string(), "online", "free")]
5555    );
5556
5557    active_call_c
5558        .update(cx_c, |call, cx| {
5559            call.invite(client_a.user_id().unwrap(), None, cx)
5560        })
5561        .await
5562        .unwrap();
5563    executor.run_until_parked();
5564    assert_eq!(
5565        contacts(&client_a, cx_a),
5566        [
5567            ("user_b".to_string(), "online", "free"),
5568            ("user_c".to_string(), "online", "busy")
5569        ]
5570    );
5571    assert_eq!(
5572        contacts(&client_b, cx_b),
5573        [
5574            ("user_a".to_string(), "online", "busy"),
5575            ("user_c".to_string(), "online", "busy"),
5576            ("user_d".to_string(), "online", "free")
5577        ]
5578    );
5579    assert_eq!(
5580        contacts(&client_c, cx_c),
5581        [
5582            ("user_a".to_string(), "online", "busy"),
5583            ("user_b".to_string(), "online", "free")
5584        ]
5585    );
5586    assert_eq!(
5587        contacts(&client_d, cx_d),
5588        [("user_b".to_string(), "online", "free")]
5589    );
5590
5591    active_call_a
5592        .update(cx_a, |call, cx| call.accept_incoming(cx))
5593        .await
5594        .unwrap();
5595    executor.run_until_parked();
5596    assert_eq!(
5597        contacts(&client_a, cx_a),
5598        [
5599            ("user_b".to_string(), "online", "free"),
5600            ("user_c".to_string(), "online", "busy")
5601        ]
5602    );
5603    assert_eq!(
5604        contacts(&client_b, cx_b),
5605        [
5606            ("user_a".to_string(), "online", "busy"),
5607            ("user_c".to_string(), "online", "busy"),
5608            ("user_d".to_string(), "online", "free")
5609        ]
5610    );
5611    assert_eq!(
5612        contacts(&client_c, cx_c),
5613        [
5614            ("user_a".to_string(), "online", "busy"),
5615            ("user_b".to_string(), "online", "free")
5616        ]
5617    );
5618    assert_eq!(
5619        contacts(&client_d, cx_d),
5620        [("user_b".to_string(), "online", "free")]
5621    );
5622
5623    active_call_a
5624        .update(cx_a, |call, cx| {
5625            call.invite(client_b.user_id().unwrap(), None, cx)
5626        })
5627        .await
5628        .unwrap();
5629    executor.run_until_parked();
5630    assert_eq!(
5631        contacts(&client_a, cx_a),
5632        [
5633            ("user_b".to_string(), "online", "busy"),
5634            ("user_c".to_string(), "online", "busy")
5635        ]
5636    );
5637    assert_eq!(
5638        contacts(&client_b, cx_b),
5639        [
5640            ("user_a".to_string(), "online", "busy"),
5641            ("user_c".to_string(), "online", "busy"),
5642            ("user_d".to_string(), "online", "free")
5643        ]
5644    );
5645    assert_eq!(
5646        contacts(&client_c, cx_c),
5647        [
5648            ("user_a".to_string(), "online", "busy"),
5649            ("user_b".to_string(), "online", "busy")
5650        ]
5651    );
5652    assert_eq!(
5653        contacts(&client_d, cx_d),
5654        [("user_b".to_string(), "online", "busy")]
5655    );
5656
5657    active_call_a
5658        .update(cx_a, |call, cx| call.hang_up(cx))
5659        .await
5660        .unwrap();
5661    executor.run_until_parked();
5662    assert_eq!(
5663        contacts(&client_a, cx_a),
5664        [
5665            ("user_b".to_string(), "online", "free"),
5666            ("user_c".to_string(), "online", "free")
5667        ]
5668    );
5669    assert_eq!(
5670        contacts(&client_b, cx_b),
5671        [
5672            ("user_a".to_string(), "online", "free"),
5673            ("user_c".to_string(), "online", "free"),
5674            ("user_d".to_string(), "online", "free")
5675        ]
5676    );
5677    assert_eq!(
5678        contacts(&client_c, cx_c),
5679        [
5680            ("user_a".to_string(), "online", "free"),
5681            ("user_b".to_string(), "online", "free")
5682        ]
5683    );
5684    assert_eq!(
5685        contacts(&client_d, cx_d),
5686        [("user_b".to_string(), "online", "free")]
5687    );
5688
5689    active_call_a
5690        .update(cx_a, |call, cx| {
5691            call.invite(client_b.user_id().unwrap(), None, cx)
5692        })
5693        .await
5694        .unwrap();
5695    executor.run_until_parked();
5696    assert_eq!(
5697        contacts(&client_a, cx_a),
5698        [
5699            ("user_b".to_string(), "online", "busy"),
5700            ("user_c".to_string(), "online", "free")
5701        ]
5702    );
5703    assert_eq!(
5704        contacts(&client_b, cx_b),
5705        [
5706            ("user_a".to_string(), "online", "busy"),
5707            ("user_c".to_string(), "online", "free"),
5708            ("user_d".to_string(), "online", "free")
5709        ]
5710    );
5711    assert_eq!(
5712        contacts(&client_c, cx_c),
5713        [
5714            ("user_a".to_string(), "online", "busy"),
5715            ("user_b".to_string(), "online", "busy")
5716        ]
5717    );
5718    assert_eq!(
5719        contacts(&client_d, cx_d),
5720        [("user_b".to_string(), "online", "busy")]
5721    );
5722
5723    server.forbid_connections();
5724    server.disconnect_client(client_a.peer_id().unwrap());
5725    executor.advance_clock(RECEIVE_TIMEOUT + RECONNECT_TIMEOUT);
5726    assert_eq!(contacts(&client_a, cx_a), []);
5727    assert_eq!(
5728        contacts(&client_b, cx_b),
5729        [
5730            ("user_a".to_string(), "offline", "free"),
5731            ("user_c".to_string(), "online", "free"),
5732            ("user_d".to_string(), "online", "free")
5733        ]
5734    );
5735    assert_eq!(
5736        contacts(&client_c, cx_c),
5737        [
5738            ("user_a".to_string(), "offline", "free"),
5739            ("user_b".to_string(), "online", "free")
5740        ]
5741    );
5742    assert_eq!(
5743        contacts(&client_d, cx_d),
5744        [("user_b".to_string(), "online", "free")]
5745    );
5746
5747    // Test removing a contact
5748    client_b
5749        .user_store()
5750        .update(cx_b, |store, cx| {
5751            store.remove_contact(client_c.user_id().unwrap(), cx)
5752        })
5753        .await
5754        .unwrap();
5755    executor.run_until_parked();
5756    assert_eq!(
5757        contacts(&client_b, cx_b),
5758        [
5759            ("user_a".to_string(), "offline", "free"),
5760            ("user_d".to_string(), "online", "free")
5761        ]
5762    );
5763    assert_eq!(
5764        contacts(&client_c, cx_c),
5765        [("user_a".to_string(), "offline", "free"),]
5766    );
5767
5768    fn contacts(
5769        client: &TestClient,
5770        cx: &TestAppContext,
5771    ) -> Vec<(String, &'static str, &'static str)> {
5772        client.user_store().read_with(cx, |store, _| {
5773            store
5774                .contacts()
5775                .iter()
5776                .map(|contact| {
5777                    (
5778                        contact.user.github_login.clone(),
5779                        if contact.online { "online" } else { "offline" },
5780                        if contact.busy { "busy" } else { "free" },
5781                    )
5782                })
5783                .collect()
5784        })
5785    }
5786}
5787
5788#[gpui::test(iterations = 10)]
5789async fn test_contact_requests(
5790    executor: BackgroundExecutor,
5791    cx_a: &mut TestAppContext,
5792    cx_a2: &mut TestAppContext,
5793    cx_b: &mut TestAppContext,
5794    cx_b2: &mut TestAppContext,
5795    cx_c: &mut TestAppContext,
5796    cx_c2: &mut TestAppContext,
5797) {
5798    // Connect to a server as 3 clients.
5799    let mut server = TestServer::start(executor.clone()).await;
5800    let client_a = server.create_client(cx_a, "user_a").await;
5801    let client_a2 = server.create_client(cx_a2, "user_a").await;
5802    let client_b = server.create_client(cx_b, "user_b").await;
5803    let client_b2 = server.create_client(cx_b2, "user_b").await;
5804    let client_c = server.create_client(cx_c, "user_c").await;
5805    let client_c2 = server.create_client(cx_c2, "user_c").await;
5806
5807    assert_eq!(client_a.user_id().unwrap(), client_a2.user_id().unwrap());
5808    assert_eq!(client_b.user_id().unwrap(), client_b2.user_id().unwrap());
5809    assert_eq!(client_c.user_id().unwrap(), client_c2.user_id().unwrap());
5810
5811    // User A and User C request that user B become their contact.
5812    client_a
5813        .user_store()
5814        .update(cx_a, |store, cx| {
5815            store.request_contact(client_b.user_id().unwrap(), cx)
5816        })
5817        .await
5818        .unwrap();
5819    client_c
5820        .user_store()
5821        .update(cx_c, |store, cx| {
5822            store.request_contact(client_b.user_id().unwrap(), cx)
5823        })
5824        .await
5825        .unwrap();
5826    executor.run_until_parked();
5827
5828    // All users see the pending request appear in all their clients.
5829    assert_eq!(
5830        client_a.summarize_contacts(cx_a).outgoing_requests,
5831        &["user_b"]
5832    );
5833    assert_eq!(
5834        client_a2.summarize_contacts(cx_a2).outgoing_requests,
5835        &["user_b"]
5836    );
5837    assert_eq!(
5838        client_b.summarize_contacts(cx_b).incoming_requests,
5839        &["user_a", "user_c"]
5840    );
5841    assert_eq!(
5842        client_b2.summarize_contacts(cx_b2).incoming_requests,
5843        &["user_a", "user_c"]
5844    );
5845    assert_eq!(
5846        client_c.summarize_contacts(cx_c).outgoing_requests,
5847        &["user_b"]
5848    );
5849    assert_eq!(
5850        client_c2.summarize_contacts(cx_c2).outgoing_requests,
5851        &["user_b"]
5852    );
5853
5854    // Contact requests are present upon connecting (tested here via disconnect/reconnect)
5855    disconnect_and_reconnect(&client_a, cx_a).await;
5856    disconnect_and_reconnect(&client_b, cx_b).await;
5857    disconnect_and_reconnect(&client_c, cx_c).await;
5858    executor.run_until_parked();
5859    assert_eq!(
5860        client_a.summarize_contacts(cx_a).outgoing_requests,
5861        &["user_b"]
5862    );
5863    assert_eq!(
5864        client_b.summarize_contacts(cx_b).incoming_requests,
5865        &["user_a", "user_c"]
5866    );
5867    assert_eq!(
5868        client_c.summarize_contacts(cx_c).outgoing_requests,
5869        &["user_b"]
5870    );
5871
5872    // User B accepts the request from user A.
5873    client_b
5874        .user_store()
5875        .update(cx_b, |store, cx| {
5876            store.respond_to_contact_request(client_a.user_id().unwrap(), true, cx)
5877        })
5878        .await
5879        .unwrap();
5880
5881    executor.run_until_parked();
5882
5883    // User B sees user A as their contact now in all client, and the incoming request from them is removed.
5884    let contacts_b = client_b.summarize_contacts(cx_b);
5885    assert_eq!(contacts_b.current, &["user_a"]);
5886    assert_eq!(contacts_b.incoming_requests, &["user_c"]);
5887    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
5888    assert_eq!(contacts_b2.current, &["user_a"]);
5889    assert_eq!(contacts_b2.incoming_requests, &["user_c"]);
5890
5891    // User A sees user B as their contact now in all clients, and the outgoing request to them is removed.
5892    let contacts_a = client_a.summarize_contacts(cx_a);
5893    assert_eq!(contacts_a.current, &["user_b"]);
5894    assert!(contacts_a.outgoing_requests.is_empty());
5895    let contacts_a2 = client_a2.summarize_contacts(cx_a2);
5896    assert_eq!(contacts_a2.current, &["user_b"]);
5897    assert!(contacts_a2.outgoing_requests.is_empty());
5898
5899    // Contacts are present upon connecting (tested here via disconnect/reconnect)
5900    disconnect_and_reconnect(&client_a, cx_a).await;
5901    disconnect_and_reconnect(&client_b, cx_b).await;
5902    disconnect_and_reconnect(&client_c, cx_c).await;
5903    executor.run_until_parked();
5904    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
5905    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
5906    assert_eq!(
5907        client_b.summarize_contacts(cx_b).incoming_requests,
5908        &["user_c"]
5909    );
5910    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
5911    assert_eq!(
5912        client_c.summarize_contacts(cx_c).outgoing_requests,
5913        &["user_b"]
5914    );
5915
5916    // User B rejects the request from user C.
5917    client_b
5918        .user_store()
5919        .update(cx_b, |store, cx| {
5920            store.respond_to_contact_request(client_c.user_id().unwrap(), false, cx)
5921        })
5922        .await
5923        .unwrap();
5924
5925    executor.run_until_parked();
5926
5927    // User B doesn't see user C as their contact, and the incoming request from them is removed.
5928    let contacts_b = client_b.summarize_contacts(cx_b);
5929    assert_eq!(contacts_b.current, &["user_a"]);
5930    assert!(contacts_b.incoming_requests.is_empty());
5931    let contacts_b2 = client_b2.summarize_contacts(cx_b2);
5932    assert_eq!(contacts_b2.current, &["user_a"]);
5933    assert!(contacts_b2.incoming_requests.is_empty());
5934
5935    // User C doesn't see user B as their contact, and the outgoing request to them is removed.
5936    let contacts_c = client_c.summarize_contacts(cx_c);
5937    assert!(contacts_c.current.is_empty());
5938    assert!(contacts_c.outgoing_requests.is_empty());
5939    let contacts_c2 = client_c2.summarize_contacts(cx_c2);
5940    assert!(contacts_c2.current.is_empty());
5941    assert!(contacts_c2.outgoing_requests.is_empty());
5942
5943    // Incoming/outgoing requests are not present upon connecting (tested here via disconnect/reconnect)
5944    disconnect_and_reconnect(&client_a, cx_a).await;
5945    disconnect_and_reconnect(&client_b, cx_b).await;
5946    disconnect_and_reconnect(&client_c, cx_c).await;
5947    executor.run_until_parked();
5948    assert_eq!(client_a.summarize_contacts(cx_a).current, &["user_b"]);
5949    assert_eq!(client_b.summarize_contacts(cx_b).current, &["user_a"]);
5950    assert!(client_b
5951        .summarize_contacts(cx_b)
5952        .incoming_requests
5953        .is_empty());
5954    assert!(client_c.summarize_contacts(cx_c).current.is_empty());
5955    assert!(client_c
5956        .summarize_contacts(cx_c)
5957        .outgoing_requests
5958        .is_empty());
5959
5960    async fn disconnect_and_reconnect(client: &TestClient, cx: &mut TestAppContext) {
5961        client.disconnect(&cx.to_async());
5962        client.clear_contacts(cx).await;
5963        client
5964            .authenticate_and_connect(false, &cx.to_async())
5965            .await
5966            .unwrap();
5967    }
5968}
5969
5970#[gpui::test(iterations = 10)]
5971async fn test_join_call_after_screen_was_shared(
5972    executor: BackgroundExecutor,
5973    cx_a: &mut TestAppContext,
5974    cx_b: &mut TestAppContext,
5975) {
5976    let mut server = TestServer::start(executor.clone()).await;
5977
5978    let client_a = server.create_client(cx_a, "user_a").await;
5979    let client_b = server.create_client(cx_b, "user_b").await;
5980    server
5981        .make_contacts(&mut [(&client_a, cx_a), (&client_b, cx_b)])
5982        .await;
5983
5984    let active_call_a = cx_a.read(ActiveCall::global);
5985    let active_call_b = cx_b.read(ActiveCall::global);
5986
5987    // Call users B and C from client A.
5988    active_call_a
5989        .update(cx_a, |call, cx| {
5990            call.invite(client_b.user_id().unwrap(), None, cx)
5991        })
5992        .await
5993        .unwrap();
5994
5995    let room_a = active_call_a.read_with(cx_a, |call, _| call.room().unwrap().clone());
5996    executor.run_until_parked();
5997    assert_eq!(
5998        room_participants(&room_a, cx_a),
5999        RoomParticipants {
6000            remote: Default::default(),
6001            pending: vec!["user_b".to_string()]
6002        }
6003    );
6004
6005    // User B receives the call.
6006
6007    let mut incoming_call_b = active_call_b.read_with(cx_b, |call, _| call.incoming());
6008    let call_b = incoming_call_b.next().await.unwrap().unwrap();
6009    assert_eq!(call_b.calling_user.github_login, "user_a");
6010
6011    // User A shares their screen
6012    let display = MacOSDisplay::new();
6013    active_call_a
6014        .update(cx_a, |call, cx| {
6015            call.room().unwrap().update(cx, |room, cx| {
6016                room.set_display_sources(vec![display.clone()]);
6017                room.share_screen(cx)
6018            })
6019        })
6020        .await
6021        .unwrap();
6022
6023    client_b.user_store().update(cx_b, |user_store, _| {
6024        user_store.clear_cache();
6025    });
6026
6027    // User B joins the room
6028    active_call_b
6029        .update(cx_b, |call, cx| call.accept_incoming(cx))
6030        .await
6031        .unwrap();
6032
6033    let room_b = active_call_b.read_with(cx_b, |call, _| call.room().unwrap().clone());
6034    assert!(incoming_call_b.next().await.unwrap().is_none());
6035
6036    executor.run_until_parked();
6037    assert_eq!(
6038        room_participants(&room_a, cx_a),
6039        RoomParticipants {
6040            remote: vec!["user_b".to_string()],
6041            pending: vec![],
6042        }
6043    );
6044    assert_eq!(
6045        room_participants(&room_b, cx_b),
6046        RoomParticipants {
6047            remote: vec!["user_a".to_string()],
6048            pending: vec![],
6049        }
6050    );
6051
6052    // Ensure User B sees User A's screenshare.
6053
6054    room_b.read_with(cx_b, |room, _| {
6055        assert_eq!(
6056            room.remote_participants()
6057                .get(&client_a.user_id().unwrap())
6058                .unwrap()
6059                .video_tracks
6060                .len(),
6061            1
6062        );
6063    });
6064}
6065
6066#[gpui::test]
6067async fn test_right_click_menu_behind_collab_panel(cx: &mut TestAppContext) {
6068    let mut server = TestServer::start(cx.executor().clone()).await;
6069    let client_a = server.create_client(cx, "user_a").await;
6070    let (_workspace_a, cx) = client_a.build_test_workspace(cx).await;
6071
6072    cx.simulate_resize(size(px(300.), px(300.)));
6073
6074    cx.simulate_keystrokes("cmd-n cmd-n cmd-n");
6075    cx.update(|cx| cx.refresh());
6076
6077    let tab_bounds = cx.debug_bounds("TAB-2").unwrap();
6078    let new_tab_button_bounds = cx.debug_bounds("ICON-Plus").unwrap();
6079
6080    assert!(
6081        tab_bounds.intersects(&new_tab_button_bounds),
6082        "Tab should overlap with the new tab button, if this is failing check if there's been a redesign!"
6083    );
6084
6085    cx.simulate_event(MouseDownEvent {
6086        button: MouseButton::Right,
6087        position: new_tab_button_bounds.center(),
6088        modifiers: Modifiers::default(),
6089        click_count: 1,
6090        first_mouse: false,
6091    });
6092
6093    // regression test that the right click menu for tabs does not open.
6094    assert!(cx.debug_bounds("MENU_ITEM-Close").is_none());
6095
6096    let tab_bounds = cx.debug_bounds("TAB-1").unwrap();
6097    cx.simulate_event(MouseDownEvent {
6098        button: MouseButton::Right,
6099        position: tab_bounds.center(),
6100        modifiers: Modifiers::default(),
6101        click_count: 1,
6102        first_mouse: false,
6103    });
6104    assert!(cx.debug_bounds("MENU_ITEM-Close").is_some());
6105}
6106
6107#[gpui::test]
6108async fn test_cmd_k_left(cx: &mut TestAppContext) {
6109    let (_, client) = TestServer::start1(cx).await;
6110    let (workspace, cx) = client.build_test_workspace(cx).await;
6111
6112    cx.simulate_keystrokes("cmd-n");
6113    workspace.update(cx, |workspace, cx| {
6114        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 1);
6115    });
6116    cx.simulate_keystrokes("cmd-k left");
6117    workspace.update(cx, |workspace, cx| {
6118        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6119    });
6120    cx.simulate_keystrokes("cmd-k");
6121    // sleep for longer than the timeout in keyboard shortcut handling
6122    // to verify that it doesn't fire in this case.
6123    cx.executor().advance_clock(Duration::from_secs(2));
6124    cx.simulate_keystrokes("left");
6125    workspace.update(cx, |workspace, cx| {
6126        assert!(workspace.items(cx).collect::<Vec<_>>().len() == 2);
6127    });
6128}
6129
6130#[gpui::test]
6131async fn test_join_after_restart(cx1: &mut TestAppContext, cx2: &mut TestAppContext) {
6132    let (mut server, client) = TestServer::start1(cx1).await;
6133    let channel1 = server.make_public_channel("channel1", &client, cx1).await;
6134    let channel2 = server.make_public_channel("channel2", &client, cx1).await;
6135
6136    join_channel(channel1, &client, cx1).await.unwrap();
6137    drop(client);
6138
6139    let client2 = server.create_client(cx2, "user_a").await;
6140    join_channel(channel2, &client2, cx2).await.unwrap();
6141}
6142
6143#[gpui::test]
6144async fn test_preview_tabs(cx: &mut TestAppContext) {
6145    let (_server, client) = TestServer::start1(cx).await;
6146    let (workspace, cx) = client.build_test_workspace(cx).await;
6147    let project = workspace.update(cx, |workspace, _| workspace.project().clone());
6148
6149    let worktree_id = project.update(cx, |project, cx| {
6150        project.worktrees().next().unwrap().read(cx).id()
6151    });
6152
6153    let path_1 = ProjectPath {
6154        worktree_id,
6155        path: Path::new("1.txt").into(),
6156    };
6157    let path_2 = ProjectPath {
6158        worktree_id,
6159        path: Path::new("2.js").into(),
6160    };
6161    let path_3 = ProjectPath {
6162        worktree_id,
6163        path: Path::new("3.rs").into(),
6164    };
6165
6166    let pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6167
6168    let get_path = |pane: &Pane, idx: usize, cx: &AppContext| {
6169        pane.item_for_index(idx).unwrap().project_path(cx).unwrap()
6170    };
6171
6172    // Opening item 3 as a "permanent" tab
6173    workspace
6174        .update(cx, |workspace, cx| {
6175            workspace.open_path(path_3.clone(), None, false, cx)
6176        })
6177        .await
6178        .unwrap();
6179
6180    pane.update(cx, |pane, cx| {
6181        assert_eq!(pane.items_len(), 1);
6182        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6183        assert_eq!(pane.preview_item_id(), None);
6184
6185        assert!(!pane.can_navigate_backward());
6186        assert!(!pane.can_navigate_forward());
6187    });
6188
6189    // Open item 1 as preview
6190    workspace
6191        .update(cx, |workspace, cx| {
6192            workspace.open_path_preview(path_1.clone(), None, true, true, cx)
6193        })
6194        .await
6195        .unwrap();
6196
6197    pane.update(cx, |pane, cx| {
6198        assert_eq!(pane.items_len(), 2);
6199        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6200        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6201        assert_eq!(
6202            pane.preview_item_id(),
6203            Some(pane.items().nth(1).unwrap().item_id())
6204        );
6205
6206        assert!(pane.can_navigate_backward());
6207        assert!(!pane.can_navigate_forward());
6208    });
6209
6210    // Open item 2 as preview
6211    workspace
6212        .update(cx, |workspace, cx| {
6213            workspace.open_path_preview(path_2.clone(), None, true, true, cx)
6214        })
6215        .await
6216        .unwrap();
6217
6218    pane.update(cx, |pane, cx| {
6219        assert_eq!(pane.items_len(), 2);
6220        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6221        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6222        assert_eq!(
6223            pane.preview_item_id(),
6224            Some(pane.items().nth(1).unwrap().item_id())
6225        );
6226
6227        assert!(pane.can_navigate_backward());
6228        assert!(!pane.can_navigate_forward());
6229    });
6230
6231    // Going back should show item 1 as preview
6232    workspace
6233        .update(cx, |workspace, cx| workspace.go_back(pane.downgrade(), cx))
6234        .await
6235        .unwrap();
6236
6237    pane.update(cx, |pane, cx| {
6238        assert_eq!(pane.items_len(), 2);
6239        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6240        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6241        assert_eq!(
6242            pane.preview_item_id(),
6243            Some(pane.items().nth(1).unwrap().item_id())
6244        );
6245
6246        assert!(pane.can_navigate_backward());
6247        assert!(pane.can_navigate_forward());
6248    });
6249
6250    // Closing item 1
6251    pane.update(cx, |pane, cx| {
6252        pane.close_item_by_id(
6253            pane.active_item().unwrap().item_id(),
6254            workspace::SaveIntent::Skip,
6255            cx,
6256        )
6257    })
6258    .await
6259    .unwrap();
6260
6261    pane.update(cx, |pane, cx| {
6262        assert_eq!(pane.items_len(), 1);
6263        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6264        assert_eq!(pane.preview_item_id(), None);
6265
6266        assert!(pane.can_navigate_backward());
6267        assert!(!pane.can_navigate_forward());
6268    });
6269
6270    // Going back should show item 1 as preview
6271    workspace
6272        .update(cx, |workspace, cx| workspace.go_back(pane.downgrade(), cx))
6273        .await
6274        .unwrap();
6275
6276    pane.update(cx, |pane, cx| {
6277        assert_eq!(pane.items_len(), 2);
6278        assert_eq!(get_path(pane, 0, cx), path_3.clone());
6279        assert_eq!(get_path(pane, 1, cx), path_1.clone());
6280        assert_eq!(
6281            pane.preview_item_id(),
6282            Some(pane.items().nth(1).unwrap().item_id())
6283        );
6284
6285        assert!(pane.can_navigate_backward());
6286        assert!(pane.can_navigate_forward());
6287    });
6288
6289    // Close permanent tab
6290    pane.update(cx, |pane, cx| {
6291        let id = pane.items().nth(0).unwrap().item_id();
6292        pane.close_item_by_id(id, workspace::SaveIntent::Skip, cx)
6293    })
6294    .await
6295    .unwrap();
6296
6297    pane.update(cx, |pane, cx| {
6298        assert_eq!(pane.items_len(), 1);
6299        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6300        assert_eq!(
6301            pane.preview_item_id(),
6302            Some(pane.items().nth(0).unwrap().item_id())
6303        );
6304
6305        assert!(pane.can_navigate_backward());
6306        assert!(pane.can_navigate_forward());
6307    });
6308
6309    // Split pane to the right
6310    pane.update(cx, |pane, cx| {
6311        pane.split(workspace::SplitDirection::Right, cx);
6312    });
6313
6314    let right_pane = workspace.update(cx, |workspace, _| workspace.active_pane().clone());
6315
6316    pane.update(cx, |pane, cx| {
6317        assert_eq!(pane.items_len(), 1);
6318        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6319        assert_eq!(
6320            pane.preview_item_id(),
6321            Some(pane.items().nth(0).unwrap().item_id())
6322        );
6323
6324        assert!(pane.can_navigate_backward());
6325        assert!(pane.can_navigate_forward());
6326    });
6327
6328    right_pane.update(cx, |pane, cx| {
6329        assert_eq!(pane.items_len(), 1);
6330        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6331        assert_eq!(pane.preview_item_id(), None);
6332
6333        assert!(!pane.can_navigate_backward());
6334        assert!(!pane.can_navigate_forward());
6335    });
6336
6337    // Open item 2 as preview in right pane
6338    workspace
6339        .update(cx, |workspace, cx| {
6340            workspace.open_path_preview(path_2.clone(), None, true, true, 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_1.clone());
6348        assert_eq!(
6349            pane.preview_item_id(),
6350            Some(pane.items().nth(0).unwrap().item_id())
6351        );
6352
6353        assert!(pane.can_navigate_backward());
6354        assert!(pane.can_navigate_forward());
6355    });
6356
6357    right_pane.update(cx, |pane, cx| {
6358        assert_eq!(pane.items_len(), 2);
6359        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6360        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6361        assert_eq!(
6362            pane.preview_item_id(),
6363            Some(pane.items().nth(1).unwrap().item_id())
6364        );
6365
6366        assert!(pane.can_navigate_backward());
6367        assert!(!pane.can_navigate_forward());
6368    });
6369
6370    // Focus left pane
6371    workspace.update(cx, |workspace, cx| {
6372        workspace.activate_pane_in_direction(workspace::SplitDirection::Left, cx)
6373    });
6374
6375    // Open item 2 as preview in left pane
6376    workspace
6377        .update(cx, |workspace, cx| {
6378            workspace.open_path_preview(path_2.clone(), None, true, true, cx)
6379        })
6380        .await
6381        .unwrap();
6382
6383    pane.update(cx, |pane, cx| {
6384        assert_eq!(pane.items_len(), 1);
6385        assert_eq!(get_path(pane, 0, cx), path_2.clone());
6386        assert_eq!(
6387            pane.preview_item_id(),
6388            Some(pane.items().nth(0).unwrap().item_id())
6389        );
6390
6391        assert!(pane.can_navigate_backward());
6392        assert!(!pane.can_navigate_forward());
6393    });
6394
6395    right_pane.update(cx, |pane, cx| {
6396        assert_eq!(pane.items_len(), 2);
6397        assert_eq!(get_path(pane, 0, cx), path_1.clone());
6398        assert_eq!(get_path(pane, 1, cx), path_2.clone());
6399        assert_eq!(
6400            pane.preview_item_id(),
6401            Some(pane.items().nth(1).unwrap().item_id())
6402        );
6403
6404        assert!(pane.can_navigate_backward());
6405        assert!(!pane.can_navigate_forward());
6406    });
6407}