JSTests/test262/test/built-ins/Temporal/PlainDate/prototype/since/calendar-invalid-return.js

// Copyright (C) 2022 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.plaindate.prototype.since
description: Throw when the returned value from the calendar's dateUntil method is not a Duration.
features: [Temporal]
---*/

class CustomCalendar extends Temporal.Calendar {
  constructor(value) {
    super("iso8601");
    this.value = value;
  }
  dateUntil() {
    return this.value;
  }
}

const tests = [
  [undefined],
  [null, "null"],
  [true],
  ["2000-05"],
  [Symbol()],
  [200005],
  [200005n],
  [{}, "plain object"],
  [() => {}, "lambda"],
  [Temporal.Duration, "Temporal.Duration"],
  [Temporal.Duration.prototype, "Temporal.Duration.prototype"],
];
for (const [test, description = typeof test] of tests) {
  const plainDate = new Temporal.PlainDate(2000, 5, 2, new CustomCalendar(test));
  assert.throws(TypeError, () => plainDate.since("2022-06-20"), `Expected error with ${description}`);
}