mirror of https://github.com/tc39/test262.git
57 lines
2.2 KiB
JavaScript
57 lines
2.2 KiB
JavaScript
|
// 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'
|
||
|
|
);
|
||
|
|
}
|