116 lines
4.0 KiB
TypeScript
116 lines
4.0 KiB
TypeScript
import dayjs from './dayjs'
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import {
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convertTimezoneToOffsetStr,
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getDateWithTimezone,
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isDayjsObject,
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toDayjs,
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} from './dayjs'
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describe('dayjs utilities', () => {
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const timezone = 'UTC'
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test('toDayjs parses time-only strings with timezone support', () => {
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const result = toDayjs('18:45', { timezone })
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expect(result).toBeDefined()
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expect(result?.format('HH:mm')).toBe('18:45')
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expect(result?.utcOffset()).toBe(getDateWithTimezone({ timezone }).utcOffset())
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})
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test('toDayjs parses 12-hour time strings', () => {
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const tz = 'America/New_York'
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const result = toDayjs('07:15 PM', { timezone: tz })
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expect(result).toBeDefined()
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expect(result?.format('HH:mm')).toBe('19:15')
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expect(result?.utcOffset()).toBe(getDateWithTimezone({ timezone: tz }).utcOffset())
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})
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test('isDayjsObject detects dayjs instances', () => {
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const date = dayjs()
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expect(isDayjsObject(date)).toBe(true)
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expect(isDayjsObject(getDateWithTimezone({ timezone }))).toBe(true)
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expect(isDayjsObject('2024-01-01')).toBe(false)
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expect(isDayjsObject({})).toBe(false)
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})
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test('toDayjs parses datetime strings in target timezone', () => {
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const value = '2024-05-01 12:00:00'
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const tz = 'America/New_York'
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const result = toDayjs(value, { timezone: tz })
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expect(result).toBeDefined()
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expect(result?.hour()).toBe(12)
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expect(result?.format('YYYY-MM-DD HH:mm')).toBe('2024-05-01 12:00')
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})
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test('toDayjs parses ISO datetime strings in target timezone', () => {
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const value = '2024-05-01T14:30:00'
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const tz = 'Europe/London'
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const result = toDayjs(value, { timezone: tz })
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expect(result).toBeDefined()
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expect(result?.hour()).toBe(14)
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expect(result?.minute()).toBe(30)
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})
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test('toDayjs handles dates without time component', () => {
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const value = '2024-05-01'
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const tz = 'America/Los_Angeles'
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const result = toDayjs(value, { timezone: tz })
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expect(result).toBeDefined()
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expect(result?.format('YYYY-MM-DD')).toBe('2024-05-01')
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expect(result?.hour()).toBe(0)
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expect(result?.minute()).toBe(0)
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})
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})
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describe('convertTimezoneToOffsetStr', () => {
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test('should return default UTC+0 for undefined timezone', () => {
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expect(convertTimezoneToOffsetStr(undefined)).toBe('UTC+0')
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})
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test('should return default UTC+0 for invalid timezone', () => {
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expect(convertTimezoneToOffsetStr('Invalid/Timezone')).toBe('UTC+0')
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})
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test('should handle whole hour positive offsets without leading zeros', () => {
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expect(convertTimezoneToOffsetStr('Asia/Shanghai')).toBe('UTC+8')
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expect(convertTimezoneToOffsetStr('Pacific/Auckland')).toBe('UTC+12')
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expect(convertTimezoneToOffsetStr('Pacific/Apia')).toBe('UTC+13')
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})
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test('should handle whole hour negative offsets without leading zeros', () => {
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expect(convertTimezoneToOffsetStr('Pacific/Niue')).toBe('UTC-11')
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expect(convertTimezoneToOffsetStr('Pacific/Honolulu')).toBe('UTC-10')
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expect(convertTimezoneToOffsetStr('America/New_York')).toBe('UTC-5')
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})
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test('should handle zero offset', () => {
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expect(convertTimezoneToOffsetStr('Europe/London')).toBe('UTC+0')
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expect(convertTimezoneToOffsetStr('UTC')).toBe('UTC+0')
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})
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test('should handle half-hour offsets (30 minutes)', () => {
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// India Standard Time: UTC+5:30
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expect(convertTimezoneToOffsetStr('Asia/Kolkata')).toBe('UTC+5:30')
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// Australian Central Time: UTC+9:30
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expect(convertTimezoneToOffsetStr('Australia/Adelaide')).toBe('UTC+9:30')
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expect(convertTimezoneToOffsetStr('Australia/Darwin')).toBe('UTC+9:30')
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})
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test('should handle 45-minute offsets', () => {
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// Chatham Time: UTC+12:45
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expect(convertTimezoneToOffsetStr('Pacific/Chatham')).toBe('UTC+12:45')
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})
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test('should preserve leading zeros in minute part for non-zero minutes', () => {
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// Ensure +05:30 is displayed as "UTC+5:30", not "UTC+5:3"
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const result = convertTimezoneToOffsetStr('Asia/Kolkata')
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expect(result).toMatch(/UTC[+-]\d+:30/)
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expect(result).not.toMatch(/UTC[+-]\d+:3[^0]/)
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})
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})
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