import { describe, it, expect, vi, beforeEach, afterEach } from 'vitest';
import { capEndDate } from './capEndDate.js';
describe('capEndDate', () => {
const FAKE_NOW = new Date('2026-02-18T12:00:00Z');
const FAKE_EFFECTIVE_NOW_STR = '2026-02-18T11:59:00Z'; // effectiveNow = FAKE_NOW - 60s buffer
beforeEach(() => {
vi.useFakeTimers();
vi.setSystemTime(FAKE_NOW);
});
afterEach(() => {
vi.useRealTimers();
});
it('should return unchanged endDate when day is in the past', () => {
expect(capEndDate('2026-02-10T23:00:00Z')).toBe('2026-02-10T23:00:00Z');
});
it('should return unchanged endDate when day is today and time is in the past', () => {
expect(capEndDate('2026-02-18T10:00:00Z')).toBe('2026-02-18T10:00:00Z');
});
it('should cap endDate when time is within the 60-second buffer window', () => {
expect(capEndDate('2026-02-18T11:59:30Z')).toBe(FAKE_EFFECTIVE_NOW_STR);
});
it('should cap endDate when day is today and time is a future time', () => {
expect(capEndDate('2026-02-18T13:00:00Z')).toBe(FAKE_EFFECTIVE_NOW_STR);
});
it('should cap endDate when day is a future day', () => {
expect(capEndDate('2026-03-01T23:59:59Z')).toBe(FAKE_EFFECTIVE_NOW_STR);
});
});
