MCP Time Server Node

import { getHolidayDefinitions, getHolidaysForYear, calculateFloatingHoliday, calculateFixedHoliday, getObservedDate, isHoliday, } from '../../src/data/holidays'; describe('Holiday Data Module', () => { describe('getHolidayDefinitions', () => { it('should return holiday definitions for US', () => { const usHolidays = getHolidayDefinitions('US'); expect(usHolidays).toBeDefined(); expect(usHolidays.length).toBeGreaterThan(0); // Check for major US holidays const holidayNames = usHolidays.map((h) => h.name); expect(holidayNames).toContain("New Year's Day"); expect(holidayNames).toContain('Independence Day'); expect(holidayNames).toContain('Christmas Day'); expect(holidayNames).toContain('Thanksgiving'); }); it('should return holiday definitions for UK', () => { const ukHolidays = getHolidayDefinitions('UK'); expect(ukHolidays).toBeDefined(); expect(ukHolidays.length).toBeGreaterThan(0); const holidayNames = ukHolidays.map((h) => h.name); expect(holidayNames).toContain("New Year's Day"); expect(holidayNames).toContain('Christmas Day'); expect(holidayNames).toContain('Boxing Day'); }); it('should return empty array for unknown country', () => { const unknownHolidays = getHolidayDefinitions('XX'); expect(unknownHolidays).toEqual([]); }); }); describe('calculateFixedHoliday', () => { it('should calculate fixed holiday date for a year', () => { const holiday = { name: 'Independence Day', type: 'fixed' as const, month: 7, day: 4, observe: 'us_federal' as const, }; const date = calculateFixedHoliday(holiday, 2025); expect(date).toEqual(new Date(2025, 6, 4)); // July 4, 2025 }); it('should handle leap year for Feb 29', () => { const holiday = { name: 'Leap Day', type: 'fixed' as const, month: 2, day: 29, observe: 'never' as const, }; const date2024 = calculateFixedHoliday(holiday, 2024); expect(date2024).toEqual(new Date(2024, 1, 29)); const date2025 = calculateFixedHoliday(holiday, 2025); expect(date2025).toBeNull(); // Not a leap year }); }); describe('calculateFloatingHoliday', () => { it('should calculate MLK Day (3rd Monday in January)', () => { const holiday = { name: 'Martin Luther King Jr. Day', type: 'floating' as const, month: 1, weekday: 1, // Monday occurrence: 3, // 3rd observe: 'always' as const, }; const date2025 = calculateFloatingHoliday(holiday, 2025); expect(date2025).toEqual(new Date(2025, 0, 20)); // January 20, 2025 const date2024 = calculateFloatingHoliday(holiday, 2024); expect(date2024).toEqual(new Date(2024, 0, 15)); // January 15, 2024 }); it('should calculate Thanksgiving (4th Thursday in November)', () => { const holiday = { name: 'Thanksgiving', type: 'floating' as const, month: 11, weekday: 4, // Thursday occurrence: 4, // 4th observe: 'always' as const, }; const date2025 = calculateFloatingHoliday(holiday, 2025); expect(date2025).toEqual(new Date(2025, 10, 27)); // November 27, 2025 }); it('should calculate Memorial Day (last Monday in May)', () => { const holiday = { name: 'Memorial Day', type: 'floating' as const, month: 5, weekday: 1, // Monday occurrence: -1, // Last observe: 'always' as const, }; const date2025 = calculateFloatingHoliday(holiday, 2025); expect(date2025).toEqual(new Date(2025, 4, 26)); // May 26, 2025 }); it('should return null for non-existent occurrence', () => { const holiday = { name: 'Fifth Monday', type: 'floating' as const, month: 2, // February weekday: 1, // Monday occurrence: 5, // 5th (doesn't exist in Feb) observe: 'always' as const, }; const date = calculateFloatingHoliday(holiday, 2025); expect(date).toBeNull(); }); }); describe('getObservedDate', () => { it('should apply US Federal observation rules', () => { // Saturday -> Friday const july4_2026 = new Date(2026, 6, 4); // Saturday const observed = getObservedDate(july4_2026, 'us_federal'); expect(observed).toEqual(new Date(2026, 6, 3)); // Friday // Sunday -> Monday const july4_2027 = new Date(2027, 6, 4); // Sunday const observed2 = getObservedDate(july4_2027, 'us_federal'); expect(observed2).toEqual(new Date(2027, 6, 5)); // Monday // Weekday -> Same day const july4_2025 = new Date(2025, 6, 4); // Friday const observed3 = getObservedDate(july4_2025, 'us_federal'); expect(observed3).toEqual(july4_2025); }); it('should apply UK Bank holiday rules', () => { // Saturday -> Monday const christmas2027 = new Date(2027, 11, 25); // Saturday const observed = getObservedDate(christmas2027, 'uk_bank'); expect(observed).toEqual(new Date(2027, 11, 27)); // Monday // Sunday -> Monday const boxing2027 = new Date(2027, 11, 26); // Sunday const observed2 = getObservedDate(boxing2027, 'uk_bank'); expect(observed2).toEqual(new Date(2027, 11, 27)); // Monday }); it('should not observe when rule is "never"', () => { const saturday = new Date(2026, 6, 4); const observed = getObservedDate(saturday, 'never'); expect(observed).toEqual(saturday); }); it('should always use actual date when rule is "always"', () => { const weekday = new Date(2025, 6, 4); // Friday const observed = getObservedDate(weekday, 'always'); expect(observed).toEqual(weekday); }); }); describe('getHolidaysForYear', () => { it('should return all US holidays for 2025', () => { const holidays = getHolidaysForYear('US', 2025); // Check we have the right number expect(holidays.length).toBeGreaterThanOrEqual(10); // Federal holidays // Check specific holidays const dates = holidays.map((h) => h.date.toISOString().split('T')[0]); expect(dates).toContain('2025-01-01'); // New Year's expect(dates).toContain('2025-01-20'); // MLK Day expect(dates).toContain('2025-07-04'); // Independence Day expect(dates).toContain('2025-11-27'); // Thanksgiving expect(dates).toContain('2025-12-25'); // Christmas }); it('should include observed dates when different from actual', () => { const holidays2026 = getHolidaysForYear('US', 2026); // July 4, 2026 is Saturday, observed on Friday const july4 = holidays2026.find((h) => h.name === 'Independence Day'); expect(july4).toBeDefined(); expect(july4!.date.toISOString().split('T')[0]).toBe('2026-07-04'); expect(july4!.observedDate?.toISOString().split('T')[0]).toBe('2026-07-03'); }); it('should return empty array for unknown country', () => { const holidays = getHolidaysForYear('XX', 2025); expect(holidays).toEqual([]); }); }); describe('isHoliday', () => { it('should identify US holidays', () => { const newYears2025 = new Date(2025, 0, 1); const july4_2025 = new Date(2025, 6, 4); const randomDay = new Date(2025, 2, 15); expect(isHoliday(newYears2025, 'US')).toBe(true); expect(isHoliday(july4_2025, 'US')).toBe(true); expect(isHoliday(randomDay, 'US')).toBe(false); }); it('should check observed dates', () => { // July 3, 2026 is observed Independence Day const july3_2026 = new Date(2026, 6, 3); expect(isHoliday(july3_2026, 'US', { checkObserved: true })).toBe(true); expect(isHoliday(july3_2026, 'US', { checkObserved: false })).toBe(false); }); }); });