// 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.setmonth description: Return value for valid dates (setting month) info: | 1. Let t be LocalTime(? thisTimeValue(this value)). 2. Let m be ? ToNumber(month). 3. If date is not specified, let dt be DateFromTime(t); otherwise, let dt be ? ToNumber(date). 4. Let newDate be MakeDate(MakeDay(YearFromTime(t), m, dt), TimeWithinDay(t)). 5. Let u be TimeClip(UTC(newDate)). 6. Set the [[DateValue]] internal slot of this Date object to u. 7. Return u. ---*/ var date = new Date(2016, 6); var returnValue, expected; returnValue = date.setMonth(3); expected = new Date(2016, 3).getTime(); assert.sameValue( returnValue, expected, 'month within unit boundary (return value)' ); assert.sameValue( date.getTime(), expected, 'month within unit boundary ([[DateValue]] slot)' ); returnValue = date.setMonth(-1); expected = new Date(2015, 11).getTime(); assert.sameValue( returnValue, expected, 'month before time unit boundary (return value)' ); assert.sameValue( date.getTime(), expected, 'month before time unit boundary ([[DateValue]] slot)' ); returnValue = date.setMonth(12); expected = new Date(2016, 0).getTime(); assert.sameValue( returnValue, expected, 'month after time unit boundary (return value)' ); assert.sameValue( date.getTime(), expected, 'month after time unit boundary ([[DateValue]] slot)' ); reportCompare(0, 0);