| // 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.setdate |
| description: > |
| Behavior when the "this" value is a Date object describing an invald date |
| info: | |
| 1. Let t be LocalTime(? thisTimeValue(this value)). |
| 2. Let dt be ? ToNumber(date). |
| 3. Let newDate be MakeDate(MakeDay(YearFromTime(t), MonthFromTime(t), dt), |
| TimeWithinDay(t)). |
| 4. Let u be TimeClip(UTC(newDate)). |
| 5. Set the [[DateValue]] internal slot of this Date object to u. |
| 6. Return u. |
| ---*/ |
| |
| var date = new Date(NaN); |
| var result; |
| |
| result = date.setDate(0); |
| |
| assert.sameValue(result, NaN, 'return value'); |
| assert.sameValue(date.getTime(), NaN, '[[DateValue]] internal slot'); |
