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jubnl
29 lines
1004 B
TypeScript
29 lines
1004 B
TypeScript
import { describe, it, expect, beforeEach, afterEach, vi } from 'vitest'
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import { localIsoDate } from './localDate'
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/**
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* "Today" must be the user's local calendar date. `toISOString()` is the UTC
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* date — between local midnight and the UTC rollover it is YESTERDAY for any
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* TZ ahead of UTC, which misclassified trips/journeys in that window. On a UTC
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* machine local == UTC, so the distinction is vacuous there; these tests pin
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* the clock at 00:30 local, where any positive offset separates the two.
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*/
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describe('localIsoDate', () => {
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beforeEach(() => {
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vi.useFakeTimers()
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vi.setSystemTime(new Date(2026, 7, 25, 0, 30)) // local 2026-08-25 00:30
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})
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afterEach(() => {
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vi.useRealTimers()
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})
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it('formats the local calendar date, zero-padded', () => {
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expect(localIsoDate()).toBe('2026-08-25')
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expect(localIsoDate(new Date(2026, 0, 3, 12))).toBe('2026-01-03')
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})
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it('defaults to now', () => {
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expect(localIsoDate()).toBe(localIsoDate(new Date()))
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})
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})
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