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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// Copyright (C) 2023 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-temporal.plainyearmonth.prototype.since
description: >
A malicious calendar resulting in a year, month, or week length of zero is
handled correctly
info: |
RoundDuration
10.z. If _oneYearDays_ = 0, throw a *RangeError* exception.
...
11.z. If _oneMonthDays_ = 0, throw a *RangeError* exception.
...
12.s. If _oneWeekDays_ = 0, throw a *RangeError* exception.
features: [Temporal]
---*/
const cal = new class extends Temporal.Calendar {
dateAdd(date, duration, options) {
// Called several times, last call sets oneYear/Month/WeekDays to 0
return new Temporal.PlainDate(1970, 1, 1);
}
}("iso8601");
const ym1 = new Temporal.PlainYearMonth(1970, 1, cal);
const ym2 = new Temporal.PlainYearMonth(1971, 1, cal);
assert.throws(RangeError, () => ym1.since(ym2, { smallestUnit: "years" }), "zero year length handled correctly");
assert.throws(RangeError, () => ym1.since(ym2, { smallestUnit: "months", roundingIncrement: 2 }), "zero month length handled correctly");
reportCompare(0, 0);
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