import { afterEach, beforeEach, describe, expect, it, vi } from "vitest"; import {  formatElapsedDurationLabel,  formatExpiresInLabel,  formatRelativeTimeUntilLabel,  getTimestampFormatOptions,} from "./timestampFormat"; describe("getTimestampFormatOptions", () => {  it("omits hour12 when locale formatting is requested", () => {    expect(getTimestampFormatOptions("locale", true)).toEqual({      hour: "numeric",      minute: "2-digit",      second: "2-digit",    });  });   it("builds a 12-hour formatter with seconds when requested", () => {    expect(getTimestampFormatOptions("12-hour", true)).toEqual({      hour: "numeric",      minute: "2-digit",      second: "2-digit",      hour12: true,    });  });   it("builds a 24-hour formatter without seconds when requested", () => {    expect(getTimestampFormatOptions("24-hour", false)).toEqual({      hour: "numeric",      minute: "2-digit",      hour12: false,    });  });}); describe("formatRelativeTimeUntilLabel", () => {  beforeEach(() => {    vi.useFakeTimers();    vi.setSystemTime(new Date("2026-04-07T12:00:00.000Z"));  });   afterEach(() => {    vi.useRealTimers();  });   it("returns Expired when the instant is in the past", () => {    expect(formatRelativeTimeUntilLabel("2026-04-07T11:59:00.000Z")).toBe("Expired");  });   it("formats seconds remaining", () => {    expect(formatRelativeTimeUntilLabel("2026-04-07T12:00:45.000Z")).toBe("45s left");  });   it("formats minutes remaining", () => {    expect(formatRelativeTimeUntilLabel("2026-04-07T12:15:00.000Z")).toBe("15m left");  });   it("formats hours remaining", () => {    expect(formatRelativeTimeUntilLabel("2026-04-07T18:00:00.000Z")).toBe("6h left");  });}); describe("formatExpiresInLabel", () => {  beforeEach(() => {    vi.useFakeTimers();    vi.setSystemTime(new Date("2026-04-07T12:00:00.000Z"));  });   afterEach(() => {    vi.useRealTimers();  });   it("returns Expired when the instant is in the past", () => {    expect(formatExpiresInLabel("2026-04-07T11:59:00.000Z")).toBe("Expired");  });   it("uses sub-minute second count", () => {    expect(formatExpiresInLabel("2026-04-07T12:00:45.000Z")).toBe("Expires in 45s");  });   it("uses minutes and seconds under one hour", () => {    expect(formatExpiresInLabel("2026-04-07T12:04:12.000Z")).toBe("Expires in 4m 12s");    expect(formatExpiresInLabel("2026-04-07T12:15:00.000Z")).toBe("Expires in 15m");  });   it("uses hours with minute and second remainder", () => {    expect(formatExpiresInLabel("2026-04-07T14:02:03.000Z")).toBe("Expires in 2h 2m 3s");    expect(formatExpiresInLabel("2026-04-07T18:00:00.000Z")).toBe("Expires in 6h");  });}); describe("formatElapsedDurationLabel", () => {  beforeEach(() => {    vi.useFakeTimers();    vi.setSystemTime(new Date("2026-04-07T12:00:00.000Z"));  });   afterEach(() => {    vi.useRealTimers();  });   it("returns just now when the instant is current or in the future", () => {    expect(formatElapsedDurationLabel("2026-04-07T12:00:00.000Z")).toBe("just now");    expect(formatElapsedDurationLabel("2026-04-07T12:01:00.000Z")).toBe("just now");  });   it("formats seconds, minutes, hours, and days", () => {    expect(formatElapsedDurationLabel("2026-04-07T11:59:45.000Z")).toBe("15s");    expect(formatElapsedDurationLabel("2026-04-07T11:45:00.000Z")).toBe("15m");    expect(formatElapsedDurationLabel("2026-04-07T06:00:00.000Z")).toBe("6h");    expect(formatElapsedDurationLabel("2026-04-03T12:00:00.000Z")).toBe("4d");  });});