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// @flow
/* eslint-env mocha */
import assert from 'power-assert'
import set from '.'
describe('set', function() {
it('sets all values', function() {
const result = set(new Date(2013, 0 /* Jan */), {
year: 2014,
month: 8, // Sep
date: 20,
hours: 12,
minutes: 12,
seconds: 12,
milliseconds: 12
})
assert.deepEqual(
result.toString(),
new Date(2014, 8 /* Sep */, 20, 12, 12, 12, 12).toString()
)
})
it('sets year', function() {
const result = set(new Date(2013, 8 /* Sep */), { year: 2014 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */))
})
it('sets month', function() {
const result = set(new Date(2014, 8 /* Sep */), { month: 9 /* Oct */ })
assert.deepEqual(result, new Date(2014, 9 /* Oct */))
})
it('sets day of month', function() {
const result = set(new Date(2014, 8 /* Sep */), { date: 20 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 20))
})
it('sets hours', function() {
const result = set(new Date(2014, 8 /* Sep */, 1), { hours: 12 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 1, 12))
})
it('sets minutes', function() {
const result = set(new Date(2014, 8 /* Sep */, 1, 1), { minutes: 12 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 1, 1, 12))
})
it('sets seconds', function() {
const result = set(new Date(2014, 8 /* Sep */, 1, 1, 1), { seconds: 12 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 1, 1, 1, 12))
})
it('sets milliseconds', function() {
const result = set(new Date(2014, 8 /* Sep */, 1, 1, 1, 1), {
milliseconds: 500
})
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 1, 1, 1, 1, 500))
})
describe('value overflow', function() {
it('months overflow into years', function() {
const result = set(new Date(2014, 8 /* Sep */, 1), {
month: 12 /* 13th month */
})
assert.deepEqual(result, new Date(2015, 0 /* Jan */, 1))
})
it('days of months overflow into months', function() {
const result = set(new Date(2014, 8 /* Sep */, 1), { date: 31 })
assert.deepEqual(result, new Date(2014, 9 /* Oct */, 1))
})
it('hours overflow into days', function() {
const result = set(new Date(2014, 8 /* Sep */, 19), { hours: 24 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 20))
})
it('minutes overflow into hours', function() {
const result = set(new Date(2014, 8 /* Sep */, 20, 11), { minutes: 60 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 20, 12))
})
it('seconds overflow into minutes', function() {
const result = set(new Date(2014, 8 /* Sep */, 20, 12, 58), { seconds: 60 })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 20, 12, 59))
})
it('milliseconds overflow into seconds', function() {
const result = set(new Date(2014, 8 /* Sep */, 20, 12, 58, 30), {
milliseconds: 1000
})
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 20, 12, 58, 31))
})
})
describe('edge cases', function() {
it('sets January', function() {
const result = set(new Date(2014, 8 /* Sep */), { month: 0 /* Jan */ })
assert.deepEqual(result, new Date(2014, 0 /* Jan */))
})
it('sets the last day of new month if the initial date was the last day of a longer month', function() {
const result = set(new Date(2014, 7 /* Aug */, 31), { month: 8 /* Sep */ })
assert.deepEqual(result, new Date(2014, 8 /* Sep */, 30))
})
it('ignores undefined values', function() {
const result = set(new Date(2014, 8 /* Sep */), { year: undefined })
assert.deepEqual(result, new Date(2014, 8 /* Sep */))
})
it('ignores null values', function() {
// @ts-expect-error
const result = set(new Date(2014, 8 /* Sep */), { year: null })
assert.deepEqual(result, new Date(2014, 8 /* Sep */))
})
it('throws TypeError exception if passed less than 2 arguments', function() {
assert.throws(set.bind(null), TypeError)
})
it('returns Invalid Date if any value in values is NaN', function() {
const result = set(new Date(2014, 8 /* Sep */), { year: NaN })
assert.deepEqual(isNaN(result.getTime()), isNaN((new Date(NaN)).getTime()))
})
it('returns Invalid Date the initial date was Invalid Date as well', function() {
const result = set(new Date(NaN), { year: 2019 })
assert.deepEqual(isNaN(result.getTime()), isNaN((new Date(NaN)).getTime()))
})
it('throws RangeError exception if `values` is not an object', function() {
// @ts-expect-error
assert.throws(set.bind(null, new Date(), true), RangeError)
})
it('throws RangeError exception if `values` is null', function() {
// @ts-expect-error
assert.throws(set.bind(null, new Date(), null), RangeError)
})
})
})
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