argument-zoneddatetime-negative-epochnanoseconds.js (1265B)
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.plaindatetime.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 zoned = new Temporal.ZonedDateTime(-13849764_999_999_999n, "UTC"); 17 const plain = new Temporal.PlainDateTime(1969, 7, 24, 16, 50, 35, 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. 21 22 const result1 = Temporal.PlainDateTime.compare(plain, zoned); 23 assert.sameValue(result1, 0); 24 25 const result2 = Temporal.PlainDateTime.compare(zoned, plain); 26 assert.sameValue(result2, 0); 27 28 reportCompare(0, 0);