JSTests/test262/test/built-ins/Temporal/PlainYearMonth/prototype/toPlainDate/calendar-merge-fields-returns-primitive.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.plainyearmonth.prototype.toplaindate
description: >
    with() should throw a TypeError if mergeFields() returns a primitive,
    without passing the value on to any other calendar methods
includes: [compareArray.js, temporalHelpers.js]
features: [BigInt, Symbol, Temporal]
---*/

[undefined, null, true, 3.14159, "bad value", Symbol("no"), 7n].forEach((primitive) => {
  const calendar = TemporalHelpers.calendarMergeFieldsReturnsPrimitive(primitive);
  const instance = new Temporal.PlainYearMonth(2000, 5, calendar);
  assert.throws(TypeError, () => instance.toPlainDate({ day: 2 }), "bad return from mergeFields() throws");
  assert.sameValue(calendar.dateFromFieldsCallCount, 0, "dateFromFields() never called");
});