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Intl.RelativeTimeFormat: Add a basic test for the functionality of supportedLocalesOf().

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This is based on test/intl402/NumberFormat/supportedLocalesOf/basic.js.
This commit is contained in:
Ms2ger 2018-08-10 17:20:51 +02:00
parent 48d95ac3c4
commit 59bc1d6a2f
1 changed files with 21 additions and 0 deletions
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test/intl402/RelativeTimeFormat/constructor/supportedLocalesOf/basic.js Normal file
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// Copyright 2018 Google Inc., Igalia S.L. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-Intl.RelativeTimeFormat.supportedLocalesOf
description: >
Tests that Intl.RelativeTimeFormat has a supportedLocalesOf property,
and it works as planned.
features: [Intl.RelativeTimeFormat]
---*/
assert.sameValue(typeof Intl.RelativeTimeFormat.supportedLocalesOf, "function",
"supportedLocalesOf should be supported.");
const defaultLocale = new Intl.RelativeTimeFormat().resolvedOptions().locale;
const notSupported = 'zxx'; // "no linguistic content"
const requestedLocales = [defaultLocale, notSupported];
const supportedLocales = Intl.RelativeTimeFormat.supportedLocalesOf(requestedLocales);
assert.sameValue(supportedLocales.length, 1, 'The length of supported locales list is not 1.');
assert.sameValue(supportedLocales[0], defaultLocale, 'The default locale is not returned in the supported list.');