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// @flow
/* eslint-env mocha */
import assert from 'assert'
import addSeconds from '.'
describe('addSeconds', function() {
it('adds the given number of seconds', function() {
const result = addSeconds(new Date(2014, 6 /* Jul */, 10, 12, 45, 0), 30)
assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 45, 30))
})
it('accepts a timestamp', function() {
const result = addSeconds(
new Date(2014, 6 /* Jul */, 10, 12, 45, 0).getTime(),
20
)
assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 45, 20))
})
it('converts a fractional number to an integer', function() {
const result = addSeconds(
new Date(2014, 6 /* Jul */, 10, 12, 45, 0),
30.777
)
assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 45, 30))
})
it('implicitly converts number arguments', function() {
// @ts-expect-error
const result = addSeconds(new Date(2014, 6 /* Jul */, 10, 12, 45, 5), '30')
assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 45, 35))
})
it('does not mutate the original date', function() {
const date = new Date(2014, 6 /* Jul */, 10, 12, 45, 0)
addSeconds(date, 15)
assert.deepStrictEqual(date, new Date(2014, 6 /* Jul */, 10, 12, 45, 0))
})
it('returns `Invalid Date` if the given date is invalid', function() {
const result = addSeconds(new Date(NaN), 30)
// @ts-expect-error
assert(result instanceof Date && isNaN(result))
})
it('returns `Invalid Date` if the given amount is NaN', function() {
const result = addSeconds(new Date(2014, 6 /* Jul */, 10, 12, 45, 0), NaN)
// @ts-expect-error
assert(result instanceof Date && isNaN(result))
})
it('throws TypeError exception if passed less than 2 arguments', function() {
// @ts-expect-error
assert.throws(addSeconds.bind(null), TypeError)
// @ts-expect-error
assert.throws(addSeconds.bind(null, 1), TypeError)
})
})
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