JSTests/test262/test/built-ins/Temporal/Instant/prototype/toZonedDateTime/plain-custom-timezone.js

// Copyright (C) 2020 Igalia, S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
esid: sec-temporal.instant.prototype.tozoneddatetime
description: TimeZone.getPlainDateTimeFor is not called
includes: [compareArray.js]
features: [Temporal]
---*/

const actual = [];
const expected = [
  "has timeZone.timeZone",
];

const instant = Temporal.Instant.from("1975-02-02T14:25:36.123456789Z");
const dateTime = Temporal.PlainDateTime.from("1963-07-02T12:00:00.987654321");
const calendar = Temporal.Calendar.from("iso8601");
const timeZone = new Proxy({
  getPlainDateTimeFor() {
    actual.push("call timeZone.getPlainDateTimeFor");
    return dateTime;
  }
}, {
  has(target, property) {
    actual.push(`has timeZone.${property}`);
    return property in target;
  },
  get(target, property) {
    actual.push(`get timeZone.${property}`);
    return target[property];
  },
});

const result = instant.toZonedDateTime({ timeZone, calendar });
assert.sameValue(result.epochNanoseconds, instant.epochNanoseconds);

assert.compareArray(actual, expected);