| // 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.'); |
