// A simulation time as Java's viewers write the wall clock: HH:mm:ss, and
// with milliseconds for the dropped frames (Lauscher.formatTimestamp), in the
// viewer's time zone.

import { describe, expect, it } from 'vitest';
import { timeOfDay } from '../src/simulation/timeOfDay.js';

describe('a time of day', () => {
  it('pads hours, minutes, seconds and milliseconds as Java does', () => {
    const clock = new Date(2026, 9, 3, 7, 5, 3, 4).getTime();
    expect(timeOfDay(clock, 0)).toBe('07:05:03');
    expect(timeOfDay(clock, 0, true)).toBe('07:05:03.004');
    expect(timeOfDay(clock, 56_996 + 3_600_000 * 15, true)).toBe('22:06:00.000');
    expect(timeOfDay(clock, 96, true)).toBe('07:05:03.100');
  });
});