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// |reftest| skip-if(!this.hasOwnProperty('Temporal')) -- Temporal is not enabled unconditionally
// 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.duration
description: Test for Temporal.Duration subclassing.
includes: [temporalHelpers.js]
features: [Temporal]
---*/
class CustomDuration extends Temporal.Duration {
}
const instance = new CustomDuration(1, 1, 0, 1);
TemporalHelpers.assertDuration(instance, 1, 1, 0, 1, 0, 0, 0, 0, 0, 0);
assert.sameValue(Object.getPrototypeOf(instance), CustomDuration.prototype, "Instance of CustomDuration");
assert(instance instanceof CustomDuration, "Instance of CustomDuration");
assert(instance instanceof Temporal.Duration, "Instance of Temporal.Duration");
reportCompare(0, 0);
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