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Intl.RelativeTimeFormat: Add a test for the return value of supportedLocalesOf()
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// Copyright 2018 Igalia, S.L. All rights reserved.
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// This code is governed by the BSD license found in the LICENSE file.
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/*---
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esid: sec-Intl.RelativeTimeFormat.supportedLocalesOf
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description: Verifies the type of the return value of Intl.RelativeTimeFormat.supportedLocalesOf().
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info: |
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Intl.RelativeTimeFormat.supportedLocalesOf ( locales [, options ])
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includes: [propertyHelper.js]
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features: [Intl.RelativeTimeFormat]
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---*/
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const result = Intl.RelativeTimeFormat.supportedLocalesOf("en");
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assert.sameValue(Array.isArray(result), true,
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"Array.isArray() should return true");
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assert.sameValue(Object.getPrototypeOf(result), Array.prototype,
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"The prototype should be Array.prototype");
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assert.sameValue(Object.isExtensible(result), true,
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"Object.isExtensible() should return true");
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assert.notSameValue(result.length, 0);
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for (let i = 0; i < result.length; ++i) {
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verifyProperty(result, String(i), {
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"writable": false,
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"enumerable": true,
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"configurable": false,
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});
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}
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verifyProperty(result, "length", {
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"writable": false,
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"enumerable": false,
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"configurable": false,
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});
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