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Add missing padding to 'YYYY' format #2231

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merged 2 commits into from
Feb 13, 2023
Merged

Add missing padding to 'YYYY' format #2231

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37dbef2
Add missing padding to 'YYYY' format
Sharparam Feb 7, 2023
ea97f4c
Add some tests for 'YYYY' format
Sharparam Feb 11, 2023
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Add some tests for 'YYYY' format
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@Sharparam
Sharparam committed Feb 11, 2023
commit ea97f4cfed6edff8d1985fa5768d63975118ee17
12 changes: 12 additions & 0 deletions test/display.test.js
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Expand Up @@ -260,3 +260,15 @@ it('As JSON -> toJSON', () => {
it('As ISO 8601 String -> toISOString e.g. 2013-02-04T22:44:30.652Z', () => {
expect(dayjs().toISOString()).toBe(moment().toISOString())
})

it('Year 1 formatted with YYYY should pad with zeroes', () => {
const date = new Date(1, 0, 1)
date.setUTCFullYear(1) // Required because 0-99 are parsed as 19xx in JS: https://developer.mozilla.org/en-US/docs/Web/JavaScript/Reference/Global_Objects/Date/Date#year
expect(dayjs(date).format('YYYY')).toBe('0001')
})

it('Year 1 formatting matches moment format', () => {
const date = new Date(1, 0, 1)
date.setUTCFullYear(1)
expect(dayjs(date).format('YYYY')).toBe(moment(date).format('YYYY'))
})