relativeto-zoneddatetime-negative-epochnanoseconds.js (1195B)
1 // |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally 2 // Copyright (C) 2021 Igalia, S.L. All rights reserved. 3 // This code is governed by the BSD license found in the LICENSE file. 4 5 /*--- 6 esid: sec-temporal.duration.compare 7 description: A pre-epoch value is handled correctly by the modulo operation in GetISOPartsFromEpoch 8 info: | 9 sec-temporal-getisopartsfromepoch step 1: 10 1. Let _remainderNs_ be the mathematical value whose sign is the sign of _epochNanoseconds_ and whose magnitude is abs(_epochNanoseconds_) modulo 10<sup>6</sup>. 11 sec-temporal-builtintimezonegetplaindatetimefor step 2: 12 2. Let _result_ be ! GetISOPartsFromEpoch(_instant_.[[Nanoseconds]]). 13 features: [Temporal] 14 ---*/ 15 16 const relativeTo = new Temporal.ZonedDateTime(-13849764_999_999_999n, "UTC"); 17 const duration = new Temporal.Duration(0, 0, 0, 1); 18 19 // This code path shows up anywhere we convert an exact time, before the Unix 20 // epoch, with nonzero microseconds or nanoseconds, into a wall time; in this 21 // case via relativeTo. 22 23 const result = Temporal.Duration.compare(duration, duration, { relativeTo }); 24 assert.sameValue(result, 0); 25 26 reportCompare(0, 0);