js/src/tests/test262/built-ins/Temporal/Calendar/prototype/month/argument-proto-in-calendar-fields.js


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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.calendar.prototype.month
description: If a calendar's fields() method returns a field named '__proto__', PrepareTemporalFields should throw a RangeError.
includes: [temporalHelpers.js]
features: [Temporal]
---*/

const calendar = TemporalHelpers.calendarWithExtraFields(['__proto__']);
const arg = {year: 2023, month: 5, monthCode: 'M05', day: 1, calendar: calendar};
const instance = new Temporal.Calendar("iso8601");

assert.throws(RangeError, () => instance.month(arg));

reportCompare(0, 0);