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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.zoneddatetime.prototype.until
description: >
NormalizedTimeDurationToDays should not be able to loop arbitrarily.
info: |
NormalizedTimeDurationToDays ( norm, zonedRelativeTo, timeZoneRec [ , precalculatedPlainDatetime ] )
...
22. If NormalizedTimeDurationSign(_oneDayLess_) × _sign_ ≥ 0, then
a. Set _norm_ to _oneDayLess_.
b. Set _relativeResult_ to _oneDayFarther_.
c. Set _days_ to _days_ + _sign_.
d. Set _oneDayFarther_ to ? AddDaysToZonedDateTime(_relativeResult_.[[Instant]], _relativeResult_.[[DateTime]], _timeZoneRec_, _zonedRelativeTo_.[[Calendar]], _sign_).
e. Set dayLengthNs to NormalizedTimeDurationFromEpochNanosecondsDifference(_oneDayFarther.[[EpochNanoseconds]], relativeResult.[[EpochNanoseconds]]).
f. If NormalizedTimeDurationSign(? SubtractNormalizedTimeDuration(_norm_, _dayLengthNs_)) × _sign_ ≥ 0, then
i. Throw a *RangeError* exception.
features: [Temporal]
---*/
const dayLengthNs = 86400000000000n;
const dayInstant = new Temporal.Instant(dayLengthNs);
let calls = 0;
const timeZone = new class extends Temporal.TimeZone {
getPossibleInstantsFor() {
calls++;
return [dayInstant];
}
}("UTC");
const zdt = new Temporal.ZonedDateTime(0n, timeZone);
const other = new Temporal.ZonedDateTime(dayLengthNs * 2n, "UTC", "iso8601");
assert.throws(RangeError, () => zdt.until(other, { largestUnit: "day", smallestUnit: "second" }), "indefinite loop is prevented");
assert.sameValue(calls, 4, "getPossibleInstantsFor is not called indefinitely");
// Expected calls:
// DifferenceTemporalZonedDateTime ->
// DifferenceZonedDateTime -> GetInstantFor (1)
// NormalizedTimeDurationToDays ->
// AddDaysToZonedDateTime (2, step 12)
// AddDaysToZonedDateTime (3, step 15)
// AddDaysToZonedDateTime (4, step 18.d)
reportCompare(0, 0);
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