import { describe, it, expect, vi, afterEach } from 'vitest';
import { SafeDatePipe } from '@app/shared/pipes/safe-date-pipe';

describe('SafeDatePipe', () => {
  let pipe: SafeDatePipe;

  afterEach(() => {
    vi.useRealTimers();
  });

  beforeEach(() => {
    pipe = new SafeDatePipe();
  });

  it('should transform a date string to relative format', () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-05-13T12:00:00'));

    const result = pipe.transform('2026-05-13T10:00:00');

    expect(result).toBe('Today');
  });

  it('should transform a Date object to relative format', () => {
    vi.useFakeTimers();
    vi.setSystemTime(new Date('2026-05-13T12:00:00'));

    const result = pipe.transform(new Date('2026-05-12T10:00:00'));

    expect(result).toBe('Yesterday');
  });

  it('should return empty string for null value', () => {
    const result = pipe.transform(null);

    expect(result).toBe('');
  });
});