MCP Time Server Node

// Template for testing new holiday implementations // CRITICAL: Read docs/verified-behaviors/date-timezone-design-reference.md first! import { getHolidaysForYear, isHoliday } from '../../src/data/holidays'; describe('Country (XX) Holidays', () => { describe('2025 Holidays', () => { const holidays2025 = [ { name: 'Holiday Name', englishName: 'English Name', date: '2025-01-01' }, // Add more holidays... ]; it('should return correct number of holidays', () => { const result = getHolidaysForYear('XX', 2025); expect(result).toHaveLength(holidays2025.length); }); holidays2025.forEach(({ name, englishName, date }) => { it(`should include ${englishName} on ${date}`, () => { const result = getHolidaysForYear('XX', 2025); const holiday = result.find(h => h.name === name || h.name === englishName ); expect(holiday).toBeDefined(); expect(holiday?.date.toISOString().split('T')[0]).toBe(date); }); }); }); describe('isHoliday function', () => { it('should recognize XX holidays', () => { // CRITICAL: Use local timezone date constructor! // new Date(year, month, day) NOT new Date('YYYY-MM-DD') // ✅ CORRECT - matches how holidays are created internally expect(isHoliday(new Date(2025, 0, 1), 'XX')).toBe(true); // Jan 1 expect(isHoliday(new Date(2025, 11, 25), 'XX')).toBe(true); // Dec 25 // ❌ WRONG - creates UTC date which may be different day // expect(isHoliday(new Date('2025-01-01'), 'XX')).toBe(true); // Non-holidays expect(isHoliday(new Date(2025, 0, 2), 'XX')).toBe(false); // Jan 2 }); }); // If the country has special observation rules (like Monday-moving) describe('Special observation rules', () => { it('should handle weekend holidays correctly', () => { // Use local timezone dates for all comparisons const result = getHolidaysForYear('XX', 2025); const movedHoliday = result.find(h => h.name === 'Holiday Name'); // Check the date was moved correctly expect(movedHoliday?.date.getDay()).toBe(1); // Monday expect(movedHoliday?.date.toISOString().split('T')[0]).toBe('2025-01-01'); }); }); }); /* REMINDERS: 1. Always use new Date(year, month, day) for test dates 2. Month is 0-indexed (0 = January, 11 = December) 3. Compare dates using toDateString() or individual components 4. Test both the actual holiday date and isHoliday function 5. For moved holidays, test both original and moved dates */