| // Copyright (C) 2022 Igalia, S.L. All rights reserved. | |
| // This code is governed by the BSD license found in the LICENSE file. | |
| /*--- | |
| esid: sec-temporal.timezone.prototype.getprevioustransition | |
| description: Leap second is a valid ISO string for Instant | |
| features: [Temporal] | |
| ---*/ | |
| const instance = new Temporal.TimeZone("UTC"); | |
| const arg = "2016-12-31T23:59:60Z"; | |
| const result = instance.getPreviousTransition(arg); | |
| assert.sameValue( | |
| result, | |
| null, | |
| "leap second is a valid ISO string for Instant" | |
| ); |