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// 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: Type coercion of provided "month"
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, 7, 11, 36, 23, 2);
var callCount = 0;
var arg = {
valueOf: function() {
args = arguments;
thisValue = this;
callCount += 1;
return 2;
}
};
var args, thisValue, returnValue;
returnValue = date.setMonth(arg);
assert.sameValue(callCount, 1, 'invoked exactly once');
assert.sameValue(args.length, 0, 'invoked without arguments');
assert.sameValue(thisValue, arg, '"this" value');
assert.sameValue(
returnValue,
new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
'application of specified value'
);
returnValue = date.setMonth(null);
assert.sameValue(
returnValue,
new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
'null'
);
returnValue = date.setMonth(true);
assert.sameValue(
returnValue,
new Date(2016, 1, 7, 11, 36, 23, 2).getTime(),
'true'
);
returnValue = date.setMonth(false);
assert.sameValue(
returnValue,
new Date(2016, 0, 7, 11, 36, 23, 2).getTime(),
'false'
);
returnValue = date.setMonth(' +00200.000E-0002 ');
assert.sameValue(
returnValue,
new Date(2016, 2, 7, 11, 36, 23, 2).getTime(),
'string'
);
returnValue = date.setMonth(undefined);
assert.sameValue(returnValue, NaN, 'undefined');
reportCompare(0, 0);
|
