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// @flow
/* eslint-env mocha */
import assert from 'power-assert'
import closestTo from '.'
describe('closestTo', function() {
it('returns the date from the given array closest to the given date', function() {
var date = new Date(2014, 6 /* Jul */, 2)
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31),
new Date(2012, 6 /* Jul */, 2)
])
assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31))
})
it('works if the closest date from the given array is before the given date', function() {
var date = new Date(2014, 6 /* Jul */, 2, 6, 30, 4, 500)
var result = closestTo(date, [
new Date(2014, 6 /* Jul */, 2, 6, 30, 5, 900),
new Date(2014, 6 /* Jul */, 2, 6, 30, 3, 900),
new Date(2014, 6 /* Jul */, 2, 6, 30, 10)
])
assert.deepEqual(result, new Date(2014, 6 /* Jul */, 2, 6, 30, 3, 900))
})
it('accepts timestamps', function() {
var date = new Date(2014, 6 /* Jul */, 2).getTime()
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31).getTime(),
new Date(2012, 6 /* Jul */, 2).getTime()
])
assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31))
})
it('returns undefined if the given array is empty', function() {
var date = new Date(2014, 6 /* Jul */, 2).getTime()
var result = closestTo(date, [])
assert(result == null)
})
it('returns `Invalid Date` if the given date is `Invalid Date`', function() {
var date = new Date(NaN)
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31),
new Date(2012, 6 /* Jul */, 2)
])
assert(result instanceof Date && isNaN(result))
})
it('returns `Invalid Date` if any date in the given array is `Invalid Date`', function() {
var date = new Date(2014, 6 /* Jul */, 2)
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31),
new Date(NaN),
new Date(2012, 6 /* Jul */, 2)
])
assert(result instanceof Date && isNaN(result))
})
it('returns `Invalid Date` if any date in the given array is `Invalid Date`', function() {
var date = new Date(2014, 6 /* Jul */, 2)
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31),
new Date(NaN),
new Date(2012, 6 /* Jul */, 2)
])
assert(result instanceof Date && isNaN(result))
})
it('returns `Invalid Date` if any value in the given array is undefined', function() {
var date = new Date(2014, 6 /* Jul */, 2)
var result = closestTo(date, [
new Date(2015, 7 /* Aug */, 31),
// $ExpectedMistake
undefined,
new Date(2012, 6 /* Jul */, 2)
])
assert(result instanceof Date && isNaN(result))
})
it('converts Array-like objects into Array', function() {
var date = new Date(2014, 6 /* Jul */, 2)
var object = {
'0': new Date(2015, 7 /* Aug */, 31),
'1': new Date(2012, 6 /* Jul */, 2),
length: 2
}
// $ExpectedMistake
var result = closestTo(date, object)
assert.deepEqual(result, new Date(2015, 7 /* Aug */, 31))
})
it('converts undefined into empty array', function() {
var date = new Date(2014, 6 /* Jul */, 2).getTime()
// $ExpectedMistake
var result = closestTo(date, undefined)
assert(result == null)
})
it('converts null into empty array', function() {
var date = new Date(2014, 6 /* Jul */, 2).getTime()
// $ExpectedMistake
var result = closestTo(date, null)
assert(result == null)
})
it('throws TypeError exception if passed less than 2 arguments', function() {
assert.throws(closestTo.bind(null), TypeError)
assert.throws(closestTo.bind(null, 1), TypeError)
})
})
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