| // 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.setfullyear |
| description: Return value for valid dates (setting year) |
| info: | |
| 1. Let t be ? thisTimeValue(this value). |
| 2. If t is NaN, let t be +0; otherwise, let t be LocalTime(t). |
| 3. Let y be ? ToNumber(year). |
| 4. If month is not specified, let m be MonthFromTime(t); otherwise, let m be |
| ? ToNumber(month). |
| 5. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be |
| ? ToNumber(date). |
| 6. Let newDate be MakeDate(MakeDay(y, m, dt), TimeWithinDay(t)). |
| 7. Let u be TimeClip(UTC(newDate)). |
| 8. Set the [[DateValue]] internal slot of this Date object to u. |
| 9. Return u. |
| ---*/ |
| |
| var date = new Date(2016, 6); |
| var returnValue, expected; |
| |
| returnValue = date.setFullYear(2015); |
| |
| expected = new Date(2015, 6).getTime(); |
| assert.sameValue(returnValue, expected, 'year (return value)'); |
| assert.sameValue(date.getTime(), expected, 'year ([[DateValue]] slot)'); |