JSTests/test262/test/built-ins/Temporal/Calendar/prototype/dateFromFields/overflow-undefined.js

// Copyright (C) 2021 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.calendar.prototype.datefromfields
description: Fallback value for overflow option
info: |
    sec-getoption step 3:
      3. If _value_ is *undefined*, return _fallback_.
    sec-temporal-totemporaloverflow step 1:
      1. Return ? GetOption(_normalizedOptions_, *"overflow"*, « String », « *"constrain"*, *"reject"* », *"constrain"*).
    sec-temporal-isodatefromfields step 2:
      2. Let _overflow_ be ? ToTemporalOverflow(_options_).
    sec-temporal.calendar.prototype.datefromfields step 6:
      6. Let _result_ be ? ISODateFromFields(_fields_, _options_).
includes: [temporalHelpers.js]
features: [Temporal]
---*/

const calendar = new Temporal.Calendar("iso8601");

const explicit = calendar.dateFromFields({ year: 2000, month: 15, day: 2 }, { overflow: undefined });
TemporalHelpers.assertPlainDate(explicit, 2000, 12, "M12", 2, "default overflow is constrain");
const implicit = calendar.dateFromFields({ year: 2000, month: 15, day: 2 }, {});
TemporalHelpers.assertPlainDate(implicit, 2000, 12, "M12", 2, "default overflow is constrain");