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/** * Unit tests for dateUtils */ import { describe, it, expect } from '@jest/globals'; import { isValidDateFormat, validateDateRange, validateYear, formatDateISO, getYearStart, getYearEnd } from '../../../src/utils/dateUtils'; describe('dateUtils', () => { describe('isValidDateFormat', () => { it('should accept valid ISO 8601 date formats', () => { expect(isValidDateFormat('2024-01-01')).toBe(true); expect(isValidDateFormat('2024-12-31')).toBe(true); expect(isValidDateFormat('2023-02-28')).toBe(true); expect(isValidDateFormat('2024-02-29')).toBe(true); // Leap year }); it('should reject invalid date formats', () => { expect(isValidDateFormat('24-01-01')).toBe(false); expect(isValidDateFormat('2024-1-1')).toBe(false); expect(isValidDateFormat('2024/01/01')).toBe(false); expect(isValidDateFormat('01-01-2024')).toBe(false); expect(isValidDateFormat('2024-13-01')).toBe(false); expect(isValidDateFormat('2024-02-30')).toBe(false); expect(isValidDateFormat('2023-02-29')).toBe(false); // Not a leap year expect(isValidDateFormat('')).toBe(false); expect(isValidDateFormat('invalid')).toBe(false); }); }); describe('validateDateRange', () => { it('should accept valid date ranges', () => { expect(validateDateRange('2024-01-01', '2024-01-31')).toBe(true); expect(validateDateRange('2024-01-01', '2024-12-31')).toBe(true); expect(validateDateRange('2024-01-01', '2024-01-01')).toBe(true); // Same date }); it('should reject invalid date ranges', () => { expect(validateDateRange('2024-01-31', '2024-01-01')).toBe(false); // End before start expect(validateDateRange('2024-12-31', '2024-01-01')).toBe(false); }); it('should reject invalid date formats in range', () => { expect(validateDateRange('invalid', '2024-01-31')).toBe(false); expect(validateDateRange('2024-01-01', 'invalid')).toBe(false); expect(validateDateRange('2024-13-01', '2024-01-31')).toBe(false); }); }); describe('validateYear', () => { const currentYear = new Date().getFullYear(); it('should accept valid years', () => { expect(validateYear(2000)).toBe(true); expect(validateYear(2024)).toBe(true); expect(validateYear(currentYear)).toBe(true); expect(validateYear(currentYear + 1)).toBe(true); // Next year for planning }); it('should reject invalid years', () => { expect(validateYear(1999)).toBe(false); // Too old expect(validateYear(currentYear + 2)).toBe(false); // Too far in future expect(validateYear(0)).toBe(false); expect(validateYear(-2024)).toBe(false); }); }); describe('formatDateISO', () => { it('should format dates to ISO 8601 format', () => { const date1 = new Date('2024-01-01T00:00:00.000Z'); expect(formatDateISO(date1)).toBe('2024-01-01'); const date2 = new Date('2024-12-31T23:59:59.999Z'); expect(formatDateISO(date2)).toBe('2024-12-31'); }); it('should handle different timezones consistently', () => { const date = new Date('2024-06-15T10:30:00.000Z'); expect(formatDateISO(date)).toBe('2024-06-15'); }); }); describe('getYearStart', () => { it('should return January 1st for given year', () => { expect(getYearStart(2024)).toBe('2024-01-01'); expect(getYearStart(2000)).toBe('2000-01-01'); }); }); describe('getYearEnd', () => { it('should return December 31st for given year', () => { expect(getYearEnd(2024)).toBe('2024-12-31'); expect(getYearEnd(2000)).toBe('2000-12-31'); }); }); });