| // Copyright (C) 2021 Igalia, S.L. All rights reserved. |
| // This code is governed by the BSD license found in the LICENSE file. |
| |
| /*--- |
| esid: sec-temporal.plaindatetime.prototype.subtract |
| description: Verify that undefined options are handled correctly. |
| features: [Temporal] |
| ---*/ |
| |
| const datetime = new Temporal.PlainDateTime(2000, 3, 31, 12, 34, 56, 987, 654, 321); |
| const duration = { months: 1 }; |
| |
| const explicit = datetime.subtract(duration, undefined); |
| assert.sameValue(explicit.month, 2, "default overflow is constrain"); |
| assert.sameValue(explicit.day, 29, "default overflow is constrain"); |
| |
| const implicit = datetime.subtract(duration); |
| assert.sameValue(implicit.month, 2, "default overflow is constrain"); |
| assert.sameValue(implicit.day, 29, "default overflow is constrain"); |
