1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
|
// Copyright (C) 2016 the V8 project authors. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-date.prototype.setyear
es6id: B.2.4.2
es5id: B.2.5
description: Behavior when year value coerces to NaN
info: |
[...]
3. Let y be ? ToNumber(year).
4. If y is NaN, set the [[DateValue]] internal slot of this Date object to
NaN and return NaN.
features: [Symbol]
---*/
var date;
date = new Date();
assert.sameValue(date.setYear(), NaN, 'return value (no argument)');
assert.sameValue(
date.valueOf(), NaN, '[[DateValue]] internal slot (no argument)'
);
date = new Date();
assert.sameValue(date.setYear(NaN), NaN, 'return value (literal NaN)');
assert.sameValue(
date.valueOf(), NaN, '[[DateValue]] internal slot (literal NaN)'
);
date = new Date();
assert.sameValue(
date.setYear('not a number'), NaN, 'return value (NaN from ToNumber)'
);
assert.sameValue(
date.valueOf(), NaN, '[[DateValue]] internal slot (NaN from ToNumber)'
);
reportCompare(0, 0);
|
