import { describe, expect, it } from "vitest";import { computeMessageDurationStart, normalizeCompactToolLabel } from "./MessagesTimeline.logic"; describe("computeMessageDurationStart", () => {  it("returns message createdAt when there is no preceding user message", () => {    const result = computeMessageDurationStart([      {        id: "a1",        role: "assistant",        createdAt: "2026-01-01T00:00:05Z",        completedAt: "2026-01-01T00:00:10Z",      },    ]);    expect(result).toEqual(new Map([["a1", "2026-01-01T00:00:05Z"]]));  });   it("uses the user message createdAt for the first assistant response", () => {    const result = computeMessageDurationStart([      { id: "u1", role: "user", createdAt: "2026-01-01T00:00:00Z" },      {        id: "a1",        role: "assistant",        createdAt: "2026-01-01T00:00:30Z",        completedAt: "2026-01-01T00:00:30Z",      },    ]);     expect(result).toEqual(      new Map([        ["u1", "2026-01-01T00:00:00Z"],        ["a1", "2026-01-01T00:00:00Z"],      ]),    );  });   it("uses the previous assistant completedAt for subsequent assistant responses", () => {    const result = computeMessageDurationStart([      { id: "u1", role: "user", createdAt: "2026-01-01T00:00:00Z" },      {        id: "a1",        role: "assistant",        createdAt: "2026-01-01T00:00:30Z",        completedAt: "2026-01-01T00:00:30Z",      },      {        id: "a2",        role: "assistant",        createdAt: "2026-01-01T00:00:55Z",        completedAt: "2026-01-01T00:00:55Z",      },    ]);     expect(result).toEqual(      new Map([        ["u1", "2026-01-01T00:00:00Z"],        ["a1", "2026-01-01T00:00:00Z"],        ["a2", "2026-01-01T00:00:30Z"],      ]),    );  });   it("does not advance the boundary for a streaming message without completedAt", () => {    const result = computeMessageDurationStart([      { id: "u1", role: "user", createdAt: "2026-01-01T00:00:00Z" },      { id: "a1", role: "assistant", createdAt: "2026-01-01T00:00:30Z" },      {        id: "a2",        role: "assistant",        createdAt: "2026-01-01T00:00:55Z",        completedAt: "2026-01-01T00:00:55Z",      },    ]);     expect(result).toEqual(      new Map([        ["u1", "2026-01-01T00:00:00Z"],        ["a1", "2026-01-01T00:00:00Z"],        ["a2", "2026-01-01T00:00:00Z"],      ]),    );  });   it("resets the boundary on a new user message", () => {    const result = computeMessageDurationStart([      { id: "u1", role: "user", createdAt: "2026-01-01T00:00:00Z" },      {        id: "a1",        role: "assistant",        createdAt: "2026-01-01T00:00:30Z",        completedAt: "2026-01-01T00:00:30Z",      },      { id: "u2", role: "user", createdAt: "2026-01-01T00:01:00Z" },      {        id: "a2",        role: "assistant",        createdAt: "2026-01-01T00:01:20Z",        completedAt: "2026-01-01T00:01:20Z",      },    ]);     expect(result).toEqual(      new Map([        ["u1", "2026-01-01T00:00:00Z"],        ["a1", "2026-01-01T00:00:00Z"],        ["u2", "2026-01-01T00:01:00Z"],        ["a2", "2026-01-01T00:01:00Z"],      ]),    );  });   it("handles system messages without affecting the boundary", () => {    const result = computeMessageDurationStart([      { id: "u1", role: "user", createdAt: "2026-01-01T00:00:00Z" },      { id: "s1", role: "system", createdAt: "2026-01-01T00:00:01Z" },      {        id: "a1",        role: "assistant",        createdAt: "2026-01-01T00:00:30Z",        completedAt: "2026-01-01T00:00:30Z",      },    ]);     expect(result).toEqual(      new Map([        ["u1", "2026-01-01T00:00:00Z"],        ["s1", "2026-01-01T00:00:00Z"],        ["a1", "2026-01-01T00:00:00Z"],      ]),    );  });   it("returns empty map for empty input", () => {    expect(computeMessageDurationStart([])).toEqual(new Map());  });}); describe("normalizeCompactToolLabel", () => {  it("removes trailing completion wording from command labels", () => {    expect(normalizeCompactToolLabel("Ran command complete")).toBe("Ran command");  });   it("removes trailing completion wording from other labels", () => {    expect(normalizeCompactToolLabel("Read file completed")).toBe("Read file");  });});