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/* eslint-env mocha */
import assert from 'power-assert'
import getWeek from '.'
describe('getWeek', function () {
it('returns the local week of year of the given date', function () {
const result = getWeek(new Date(2005, 0 /* Jan */, 2))
assert(result === 2)
})
it('accepts a timestamp', function () {
const result = getWeek(new Date(2008, 11 /* Dec */, 29).getTime())
assert(result === 1)
})
it('handles dates before 100 AD', function () {
const initialDate = new Date(0)
initialDate.setFullYear(7, 11 /* Dec */, 30)
initialDate.setHours(0, 0, 0, 0)
const result = getWeek(initialDate)
assert(result === 1)
})
it('returns NaN if the given date is invalid', function () {
const result = getWeek(new Date(NaN))
assert(isNaN(result))
})
it('allows to specify `weekStartsOn` and `firstWeekContainsDate` in locale', function () {
const date = new Date(2005, 0 /* Jan */, 2)
// @ts-expect-error
const result = getWeek(date, {
locale: {
options: { weekStartsOn: 1, firstWeekContainsDate: 4 }
}
})
assert(result === 53)
})
it('`options.weekStartsOn` overwrites the first day of the week specified in locale', function () {
const date = new Date(2005, 0 /* Jan */, 2)
const result = getWeek(date, {
weekStartsOn: 1,
firstWeekContainsDate: 4,
// $ExpectedMistake
locale: {
options: { weekStartsOn: 0, firstWeekContainsDate: 1 }
}
})
assert(result === 53)
})
it('throws `RangeError` if `options.weekStartsOn` is not convertable to 0, 1, ..., 6 or undefined', function () {
// @ts-expect-error
const block = getWeek.bind(null, new Date(2007, 11 /* Dec */, 31), {
weekStartsOn: NaN
})
assert.throws(block, RangeError)
})
it('throws `RangeError` if `options.firstWeekContainsDate` is not convertable to 1, 2, ..., 7 or undefined', function () {
// @ts-expect-error
const block = getWeek.bind(null, new Date(2007, 11 /* Dec */, 31), {
firstWeekContainsDate: NaN
})
assert.throws(block, RangeError)
})
it('throws TypeError exception if passed less than 1 argument', function () {
assert.throws(getWeek.bind(null), TypeError)
})
})
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