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test.js
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test.js
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// @flow
/* eslint-env mocha */
import assert from 'power-assert'
import addMinutes from '.'
describe('addMinutes', function () {
it('adds the given number of minutes', function () {
var result = addMinutes(new Date(2014, 6 /* Jul */, 10, 12, 0), 30)
assert.deepEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 30))
})
it('accepts a string', function () {
var result = addMinutes(
new Date(2014, 6 /* Jul */, 10, 12, 0).toISOString(), 20
)
assert.deepEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 20))
})
it('accepts a timestamp', function () {
var result = addMinutes(
new Date(2014, 6 /* Jul */, 10, 12, 0).getTime(), 20
)
assert.deepEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 20))
})
it('implicitly converts number arguments', function () {
// $ExpectedMistake
var result = addMinutes(new Date(2014, 6 /* Jul */, 10, 12, 5), '30')
assert.deepEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 35))
})
it('does not mutate the original date', function () {
var date = new Date(2014, 6 /* Jul */, 10, 12, 0)
addMinutes(date, 25)
assert.deepEqual(date, new Date(2014, 6 /* Jul */, 10, 12, 0))
})
it('returns `Invalid Date` if the given date is invalid', function () {
var result = addMinutes(new Date(NaN), 30)
assert(result instanceof Date && isNaN(result))
})
it('returns `Invalid Date` if the given amount is NaN', function () {
var result = addMinutes(new Date(2014, 6 /* Jul */, 10, 12, 0), NaN)
assert(result instanceof Date && isNaN(result))
})
it('throws `RangeError` if `options.additionalDigits` is not convertable to 0, 1, 2 or undefined', function () {
// $ExpectedMistake
var block = addMinutes.bind(null, new Date(2014, 6 /* Jul */, 10, 12, 0), 30, {additionalDigits: NaN})
assert.throws(block, RangeError)
})
})