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Add tests for adding negative durations to/subtracting durations from the last representable year/month of the ISO calendar #4302

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Nov 1, 2024
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Add tests for adding negative durations to/subtracting durations from the last representable year/month of the ISO calendar #4302

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21 changes: 21 additions & 0 deletions ...built-ins/Temporal/PlainYearMonth/prototype/add/subtract-from-last-representable-month.js
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// Copyright (C) 2024 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.plainyearmonth.prototype.add
description: RangeError thrown when adding negative duration to last representable month.
features: [Temporal]
---*/

const lastMonth = new Temporal.PlainYearMonth(275760, 9);

// See https://tc39.es/proposal-temporal/#sec-temporal-adddurationtoyearmonth
// (step 10d)
assert.throws(RangeError, () => lastMonth.add({seconds: -1}));
assert.throws(RangeError, () => lastMonth.add({minutes: -1}));
assert.throws(RangeError, () => lastMonth.add({hours: -1}));
assert.throws(RangeError, () => lastMonth.add({days: -1}));
assert.throws(RangeError, () => lastMonth.add({weeks: -1}));
assert.throws(RangeError, () => lastMonth.add({months: -1}));
assert.throws(RangeError, () => lastMonth.add({years: -1}));

21 changes: 21 additions & 0 deletions ...-ins/Temporal/PlainYearMonth/prototype/subtract/subtract-from-last-representable-month.js
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@@ -0,0 +1,21 @@
// Copyright (C) 2024 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.plainyearmonth.prototype.subtract
description: RangeError thrown when subtracting duration from last representable month.
features: [Temporal]
---*/

const lastMonth = new Temporal.PlainYearMonth(275760, 9);

// See https://tc39.es/proposal-temporal/#sec-temporal-adddurationtoyearmonth
// (step 10d)
assert.throws(RangeError, () => lastMonth.subtract({seconds: 1}));
assert.throws(RangeError, () => lastMonth.subtract({minutes: 1}));
assert.throws(RangeError, () => lastMonth.subtract({hours: 1}));
assert.throws(RangeError, () => lastMonth.subtract({days: 1}));
assert.throws(RangeError, () => lastMonth.subtract({weeks: 1}));
assert.throws(RangeError, () => lastMonth.subtract({months: 1}));
assert.throws(RangeError, () => lastMonth.subtract({years: 1}));

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