import type { ProviderEvent, ProviderSession, TerminalEvent } from "@t3tools/contracts";import { describe, expect, it } from "vitest"; import { type AppState, reducer } from "./store";import { DEFAULT_THREAD_TERMINAL_HEIGHT, DEFAULT_THREAD_TERMINAL_ID } from "./types";import type { Thread } from "./types"; type TerminalStartedEvent = Extract<TerminalEvent, { type: "started" }>;type TerminalActivityEvent = Extract<TerminalEvent, { type: "activity" }>; function makeSession(overrides: Partial<ProviderSession> = {}): ProviderSession {  return {    sessionId: "sess-1",    provider: "codex",    status: "ready",    createdAt: "2026-02-09T00:00:00.000Z",    updatedAt: "2026-02-09T00:00:00.000Z",    ...overrides,  };} function makeEvent(overrides: Partial<ProviderEvent> = {}): ProviderEvent {  return {    id: "evt-1",    kind: "notification",    provider: "codex",    sessionId: "sess-1",    createdAt: "2026-02-09T00:00:01.000Z",    method: "thread/started",    ...overrides,  };} function makeThread(overrides: Partial<Thread> = {}): Thread {  return {    id: "thread-local-1",    codexThreadId: null,    projectId: "project-1",    title: "Thread",    model: "gpt-5.3-codex",    terminalOpen: false,    terminalHeight: DEFAULT_THREAD_TERMINAL_HEIGHT,    terminalIds: [DEFAULT_THREAD_TERMINAL_ID],    runningTerminalIds: [],    activeTerminalId: DEFAULT_THREAD_TERMINAL_ID,    terminalGroups: [      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID],      },    ],    activeTerminalGroupId: `group-${DEFAULT_THREAD_TERMINAL_ID}`,    session: makeSession(),    messages: [],    events: [],    error: null,    createdAt: "2026-02-09T00:00:00.000Z",    branch: null,    worktreePath: null,    ...overrides,  };} function makeState(thread: Thread): AppState {  return {    projects: [      {        id: "project-1",        name: "Project",        cwd: "/tmp/project",        model: "gpt-5.3-codex",        expanded: true,      },    ],    threads: [thread],    activeThreadId: thread.id,    runtimeMode: "full-access",    diffOpen: false,    diffThreadId: null,    diffTurnId: null,    diffFilePath: null,  };} function makeTerminalStartedEvent(  overrides: Partial<TerminalStartedEvent> = {},): TerminalStartedEvent {  return {    type: "started",    threadId: "thread-local-1",    terminalId: DEFAULT_THREAD_TERMINAL_ID,    createdAt: "2026-02-09T00:00:01.000Z",    snapshot: {      threadId: "thread-local-1",      terminalId: DEFAULT_THREAD_TERMINAL_ID,      cwd: "/tmp/project",      status: "running",      pid: 1234,      history: "",      exitCode: null,      exitSignal: null,      updatedAt: "2026-02-09T00:00:01.000Z",    },    ...overrides,  };} function makeTerminalActivityEvent(  overrides: Partial<TerminalActivityEvent> = {},): TerminalActivityEvent {  return {    type: "activity",    threadId: "thread-local-1",    terminalId: DEFAULT_THREAD_TERMINAL_ID,    createdAt: "2026-02-09T00:00:02.000Z",    hasRunningSubprocess: true,    ...overrides,  };} describe("store reducer thread continuity", () => {  it("stores codexThreadId from UPDATE_SESSION", () => {    const state = makeState(      makeThread({        session: null,      }),    );    const next = reducer(state, {      type: "UPDATE_SESSION",      threadId: "thread-local-1",      session: makeSession({ threadId: "thr_123" }),    });     expect(next.threads[0]?.codexThreadId).toBe("thr_123");  });   it("toggles terminal open state per thread", () => {    const state = makeState(makeThread({ terminalOpen: false }));    const next = reducer(state, {      type: "TOGGLE_THREAD_TERMINAL",      threadId: "thread-local-1",    });    expect(next.threads[0]?.terminalOpen).toBe(true);  });   it("opens diff panel with an explicit turn/file target", () => {    const state = makeState(makeThread());    const next = reducer(state, {      type: "OPEN_DIFF",      threadId: "thread-local-1",      turnId: "turn-1",      filePath: "src/app.ts",    });     expect(next.diffOpen).toBe(true);    expect(next.diffThreadId).toBe("thread-local-1");    expect(next.diffTurnId).toBe("turn-1");    expect(next.diffFilePath).toBe("src/app.ts");  });   it("sets terminal open state per thread", () => {    const state = makeState(makeThread({ terminalOpen: true }));    const next = reducer(state, {      type: "SET_THREAD_TERMINAL_OPEN",      threadId: "thread-local-1",      open: false,    });    expect(next.threads[0]?.terminalOpen).toBe(false);  });   it("sets terminal height per thread", () => {    const state = makeState(makeThread({ terminalHeight: 280 }));    const next = reducer(state, {      type: "SET_THREAD_TERMINAL_HEIGHT",      threadId: "thread-local-1",      height: 360,    });    expect(next.threads[0]?.terminalHeight).toBe(360);  });   it("splits the active terminal into side-by-side mode", () => {    const state = makeState(makeThread());    const next = reducer(state, {      type: "SPLIT_THREAD_TERMINAL",      threadId: "thread-local-1",      terminalId: "term-2",    });     expect(next.threads[0]?.terminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID, "term-2"]);    expect(next.threads[0]?.activeTerminalId).toBe("term-2");    expect(next.threads[0]?.terminalGroups).toEqual([      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],      },    ]);    expect(next.threads[0]?.activeTerminalGroupId).toBe(`group-${DEFAULT_THREAD_TERMINAL_ID}`);  });   it("creates a new full-width terminal and switches to tab mode", () => {    const state = makeState(makeThread());    const next = reducer(state, {      type: "NEW_THREAD_TERMINAL",      threadId: "thread-local-1",      terminalId: "term-2",    });     expect(next.threads[0]?.terminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID, "term-2"]);    expect(next.threads[0]?.activeTerminalId).toBe("term-2");    expect(next.threads[0]?.terminalGroups).toEqual([      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID],      },      { id: "group-term-2", terminalIds: ["term-2"] },    ]);    expect(next.threads[0]?.activeTerminalGroupId).toBe("group-term-2");  });   it("switches the active terminal and restores its owning group", () => {    const state = makeState(      makeThread({        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2", "term-3"],        activeTerminalId: DEFAULT_THREAD_TERMINAL_ID,        terminalGroups: [          {            id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,            terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],          },          { id: "group-term-3", terminalIds: ["term-3"] },        ],        activeTerminalGroupId: "group-term-3",      }),    );    const next = reducer(state, {      type: "SET_THREAD_ACTIVE_TERMINAL",      threadId: "thread-local-1",      terminalId: "term-2",    });     expect(next.threads[0]?.activeTerminalId).toBe("term-2");    expect(next.threads[0]?.activeTerminalGroupId).toBe(`group-${DEFAULT_THREAD_TERMINAL_ID}`);  });   it("supports splitting beyond two terminals in the same group", () => {    const state = makeState(      makeThread({        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],        activeTerminalId: "term-2",        terminalGroups: [          {            id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,            terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],          },        ],        activeTerminalGroupId: `group-${DEFAULT_THREAD_TERMINAL_ID}`,      }),    );    const next = reducer(state, {      type: "SPLIT_THREAD_TERMINAL",      threadId: "thread-local-1",      terminalId: "term-3",    });     expect(next.threads[0]?.terminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID, "term-2", "term-3"]);    expect(next.threads[0]?.terminalGroups).toEqual([      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2", "term-3"],      },    ]);    expect(next.threads[0]?.activeTerminalId).toBe("term-3");    expect(next.threads[0]?.activeTerminalGroupId).toBe(`group-${DEFAULT_THREAD_TERMINAL_ID}`);  });   it("closes a terminal and keeps grouped layout coherent", () => {    const state = makeState(      makeThread({        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2", "term-3"],        activeTerminalId: "term-2",        terminalGroups: [          {            id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,            terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],          },          { id: "group-term-3", terminalIds: ["term-3"] },        ],        activeTerminalGroupId: `group-${DEFAULT_THREAD_TERMINAL_ID}`,      }),    );    const next = reducer(state, {      type: "CLOSE_THREAD_TERMINAL",      threadId: "thread-local-1",      terminalId: "term-2",    });     expect(next.threads[0]?.terminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID, "term-3"]);    expect(next.threads[0]?.activeTerminalId).toBe(DEFAULT_THREAD_TERMINAL_ID);    expect(next.threads[0]?.terminalGroups).toEqual([      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID],      },      { id: "group-term-3", terminalIds: ["term-3"] },    ]);  });   it("closes the final terminal and hides the drawer", () => {    const state = makeState(      makeThread({        terminalOpen: true,        runningTerminalIds: [DEFAULT_THREAD_TERMINAL_ID],      }),    );    const next = reducer(state, {      type: "CLOSE_THREAD_TERMINAL",      threadId: "thread-local-1",      terminalId: DEFAULT_THREAD_TERMINAL_ID,    });     expect(next.threads[0]?.terminalOpen).toBe(false);    expect(next.threads[0]?.terminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID]);    expect(next.threads[0]?.runningTerminalIds).toEqual([]);    expect(next.threads[0]?.activeTerminalId).toBe(DEFAULT_THREAD_TERMINAL_ID);    expect(next.threads[0]?.terminalGroups).toEqual([      {        id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,        terminalIds: [DEFAULT_THREAD_TERMINAL_ID],      },    ]);  });   it("tracks running terminals from subprocess activity events", () => {    const state = makeState(makeThread());    const started = reducer(state, {      type: "APPLY_TERMINAL_EVENT",      event: makeTerminalStartedEvent(),    });    expect(started.threads[0]?.runningTerminalIds).toEqual([]);     const active = reducer(started, {      type: "APPLY_TERMINAL_EVENT",      event: makeTerminalActivityEvent(),    });    expect(active.threads[0]?.runningTerminalIds).toEqual([DEFAULT_THREAD_TERMINAL_ID]);     const idle = reducer(active, {      type: "APPLY_TERMINAL_EVENT",      event: makeTerminalActivityEvent({ hasRunningSubprocess: false }),    });    expect(idle.threads[0]?.runningTerminalIds).toEqual([]);     const exited = reducer(active, {      type: "APPLY_TERMINAL_EVENT",      event: {        type: "exited",        threadId: "thread-local-1",        terminalId: DEFAULT_THREAD_TERMINAL_ID,        createdAt: "2026-02-09T00:00:05.000Z",        exitCode: 0,        exitSignal: null,      },    });    expect(exited.threads[0]?.runningTerminalIds).toEqual([]);  });   it("keeps running status when another terminal in the thread is still running", () => {    const state = makeState(      makeThread({        terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],        runningTerminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],        activeTerminalId: "term-2",        terminalGroups: [          {            id: `group-${DEFAULT_THREAD_TERMINAL_ID}`,            terminalIds: [DEFAULT_THREAD_TERMINAL_ID, "term-2"],          },        ],        activeTerminalGroupId: `group-${DEFAULT_THREAD_TERMINAL_ID}`,      }),    );     const next = reducer(state, {      type: "APPLY_TERMINAL_EVENT",      event: {        type: "exited",        threadId: "thread-local-1",        terminalId: DEFAULT_THREAD_TERMINAL_ID,        createdAt: "2026-02-09T00:00:07.000Z",        exitCode: 0,        exitSignal: null,      },    });     expect(next.threads[0]?.runningTerminalIds).toEqual(["term-2"]);  });   it("backfills codexThreadId from routed provider events", () => {    const state = makeState(makeThread({ codexThreadId: null }));    const next = reducer(state, {      type: "APPLY_EVENT",      event: makeEvent({        method: "thread/started",        payload: { thread: { id: "thr_backfilled" } },      }),      activeAssistantItemRef: { current: null },    });     expect(next.threads[0]?.codexThreadId).toBe("thr_backfilled");  });   it("ignores events from a foreign thread within the same session", () => {    const state = makeState(makeThread({ codexThreadId: "thr_expected" }));    const next = reducer(state, {      type: "APPLY_EVENT",      event: makeEvent({        method: "turn/started",        threadId: "thr_unexpected",        payload: { turn: { id: "turn-1" } },      }),      activeAssistantItemRef: { current: null },    });     expect(next).toBe(state);  });   it("rebases thread identity on thread/started during connect", () => {    const state = makeState(      makeThread({        codexThreadId: "thr_old",        session: makeSession({          status: "connecting",          threadId: "thr_old",        }),      }),    );    const next = reducer(state, {      type: "APPLY_EVENT",      event: makeEvent({        method: "thread/started",        threadId: "thr_new",        payload: { thread: { id: "thr_new" } },      }),      activeAssistantItemRef: { current: null },    });     expect(next.threads[0]?.codexThreadId).toBe("thr_new");    expect(next.threads[0]?.session?.threadId).toBe("thr_new");  });   it("reconciles project ids by cwd when syncing backend projects", () => {    const state: AppState = {      projects: [        {          id: "project-old-a",          name: "A",          cwd: "/tmp/a",          model: "gpt-5.3-codex",          expanded: false,        },        {          id: "project-old-b",          name: "B",          cwd: "/tmp/b",          model: "gpt-5.3-codex",          expanded: true,        },      ],      threads: [        makeThread({          id: "thread-a",          projectId: "project-old-a",        }),        makeThread({          id: "thread-b",          projectId: "project-old-b",        }),      ],      activeThreadId: "thread-b",      runtimeMode: "full-access",      diffOpen: false,      diffThreadId: null,      diffTurnId: null,      diffFilePath: null,    };     const next = reducer(state, {      type: "SYNC_PROJECTS",      projects: [        {          id: "project-new-a",          name: "A",          cwd: "/tmp/a",          model: "gpt-5.3-codex",          expanded: true,        },      ],    });     expect(next.projects).toHaveLength(1);

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