text: // 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.zoneddatetime.prototype.tostring
  description: The time zone offset part of the string serialization
  features: [BigInt, Temporal]
  ---*/
  
  function test(timeZoneIdentifier, expected, description) {
    const timeZone = new Temporal.TimeZone(timeZoneIdentifier);
    const datetime = new Temporal.ZonedDateTime(0n, timeZone);
    assert.sameValue(datetime.toString(), expected, description);
  }
  
  test("UTC", "1970-01-01T00:00:00+00:00[UTC]", "offset of UTC is +00:00");
  test("+01:00", "1970-01-01T01:00:00+01:00[+01:00]", "positive offset");
  test("-05:00", "1969-12-31T19:00:00-05:00[-05:00]", "negative offset");
  test("+00:44:59.123456789", "1970-01-01T00:44:59.123456789+00:45[+00:44:59.123456789]", "sub-minute offset");
  test("-00:00:10.987654321", "1969-12-31T23:59:49.012345679+00:00[-00:00:10.987654321]", "sub-minute offset that rounds to zero");
  