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7d970fbe4e
It's no longer possible to fake built-in time zones using custom objects. So testing DST shifts will have to use real built-in time zones. Replace TemporalHelpers.springForwardFallBackTimeZone with America/Vancouver (it was modelled on the DST transitions in 2000) and TemporalHelpers.crossDateLineTimeZone with Pacific/Apia (it was modelled on the 2011 switch to the other side of the international date line.) These tests have to move to the intl402/ folder since non-Intl-aware implementations are allowed (but not required) to support any built-in time zones other than UTC.
34 lines
1.5 KiB
JavaScript
34 lines
1.5 KiB
JavaScript
// Copyright (C) 2021 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.zoneddatetime.from
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description: Fallback value for disambiguation option
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info: |
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sec-getoption step 3:
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3. If _value_ is *undefined*, return _fallback_.
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sec-temporal-totemporaldisambiguation step 1:
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1. Return ? GetOption(_normalizedOptions_, *"disambiguation"*, « String », « *"compatible"*, *"earlier"*, *"later"*, *"reject"* », *"compatible"*).
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sec-temporal-totemporalzoneddatetime step 5:
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5. Let _disambiguation_ be ? ToTemporalDisambiguation(_options_).
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sec-temporal.zoneddatetime.from step 2:
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2. If Type(_item_) is Object and _item_ has an [[InitializedTemporalZonedDateTime]] internal slot, then
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...
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d. Return ...
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3. Return ? ToTemporalZonedDateTime(_item_, _options_).
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features: [Temporal]
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---*/
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const springForwardFields = { timeZone: "America/Vancouver", year: 2000, month: 4, day: 2, hour: 2, minute: 30 };
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const fallBackFields = { timeZone: "America/Vancouver", year: 2000, month: 10, day: 29, hour: 1, minute: 30 };
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[
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[springForwardFields, 954671400_000_000_000n],
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[fallBackFields, 972808200_000_000_000n],
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].forEach(([fields, expected]) => {
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const explicit = Temporal.ZonedDateTime.from(fields, { disambiguation: undefined });
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assert.sameValue(explicit.epochNanoseconds, expected, "default disambiguation is compatible (later)");
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// See options-undefined.js for {}
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});
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