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babd46c40a
This adds tests for a normative change which reached consensus in the June 2022 TC39 meeting, ensuring that the representable range of Temporal.Instant is always the same regardless of which time zone offset is used when converting from a string. See: https://github.com/tc39/proposal-temporal/pull/2189
46 lines
1.5 KiB
JavaScript
46 lines
1.5 KiB
JavaScript
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-temporal.instant.from
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description: String arguments at the limit of the representable range
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features: [Temporal]
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---*/
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const minInstant = new Temporal.Instant(-86400_00000000_000_000_000n);
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const maxInstant = new Temporal.Instant(86400_00000000_000_000_000n);
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const minInstantStrings = [
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"-271821-04-20T00:00Z",
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"-271821-04-19T23:00-01:00",
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"-271821-04-19T00:00:00.000000001-23:59:59.999999999",
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];
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for (const str of minInstantStrings) {
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assert.sameValue(Temporal.Instant.from(str).epochNanoseconds, minInstant.epochNanoseconds, `instant string ${str} should be valid`);
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}
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const maxInstantStrings = [
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"+275760-09-13T00:00Z",
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"+275760-09-13T01:00+01:00",
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"+275760-09-13T23:59:59.999999999+23:59:59.999999999",
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];
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for (const str of maxInstantStrings) {
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assert.sameValue(Temporal.Instant.from(str).epochNanoseconds, maxInstant.epochNanoseconds, `instant string ${str} should be valid`);
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}
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const outOfRangeInstantStrings = [
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"-271821-04-19T23:59:59.999999999Z",
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"-271821-04-19T23:00-00:59:59.999999999",
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"-271821-04-19T00:00:00-23:59:59.999999999",
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"-271821-04-19T00:00:00-24:00",
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"+275760-09-13T00:00:00.000000001Z",
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"+275760-09-13T01:00+00:59:59.999999999",
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"+275760-09-14T00:00+23:59:59.999999999",
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"+275760-09-14T00:00+24:00",
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];
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for (const str of outOfRangeInstantStrings) {
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assert.throws(RangeError, () => Temporal.Instant.from(str), `instant string ${str} should not be valid`);
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}
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