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// |reftest| skip -- Temporal is not supported
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
description: >
Verify the time zone arithmetic used in
TemporalHelpers.crossDateLineTimeZone() against the Pacific/Apia time zone in
the implementation's time zone database
includes: [compareArray.js, temporalHelpers.js]
features: [Temporal]
---*/
// No need to test this on hosts that don't provide an Intl object. It's
// sufficient that the logic is tested on at least one host.
if (typeof globalThis.Intl !== "undefined") {
const tz = TemporalHelpers.crossDateLineTimeZone();
const realTz = new Temporal.TimeZone('Pacific/Apia');
const shiftInstant = Temporal.Instant.from('2011-12-30T10:00:00Z');
assert.sameValue(
tz.getOffsetNanosecondsFor(shiftInstant),
realTz.getOffsetNanosecondsFor(shiftInstant),
'offset at shift instant'
);
const minus1 = shiftInstant.subtract({ hours: 1 });
assert.sameValue(
tz.getOffsetNanosecondsFor(minus1),
realTz.getOffsetNanosecondsFor(minus1),
'offset at 1 hour before shift'
);
const plus1 = shiftInstant.add({ hours: 1 });
assert.sameValue(
tz.getOffsetNanosecondsFor(plus1),
realTz.getOffsetNanosecondsFor(plus1),
'offset at 1 hour after shift'
);
const middleOfSkippedDayWallTime = Temporal.PlainDateTime.from("2011-12-30T12:00");
assert.compareArray(
tz.getPossibleInstantsFor(middleOfSkippedDayWallTime).map((i) => i.epochNanoseconds),
realTz.getPossibleInstantsFor(middleOfSkippedDayWallTime).map((i) => i.epochNanoseconds),
'possible instants for middle of skipped day wall time'
);
const before1 = middleOfSkippedDayWallTime.subtract({ days: 1 });
assert.compareArray(
tz.getPossibleInstantsFor(before1).map((i) => i.epochNanoseconds),
realTz.getPossibleInstantsFor(before1).map((i) => i.epochNanoseconds),
'possible instants for 1 day before skipped day'
);
const after1 = middleOfSkippedDayWallTime.add({ days: 1 });
assert.compareArray(
tz.getPossibleInstantsFor(after1).map((i) => i.epochNanoseconds),
realTz.getPossibleInstantsFor(after1).map((i) => i.epochNanoseconds),
'possible instants for 1 day after skipped day'
);
}
reportCompare(0, 0);
|
