JSTests/test262/test/intl402/fallback-locales-are-supported.js

// Copyright 2012 Mozilla Corporation. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.

/*---
es5id: 9.1_b
description: >
    Tests that appropriate fallback locales are provided for
    supported locales.
author: Norbert Lindenberg
includes: [testIntl.js]
---*/

testWithIntlConstructors(function (Constructor) {
    var info = getLocaleSupportInfo(Constructor);
    var fallback;
    info.supported.forEach(function (locale) {
        var pos = locale.lastIndexOf("-");
        if (pos !== -1) {
            fallback = locale.substring(0, pos);
            assert.notSameValue(info.supported.indexOf(fallback), -1, "Locale " + locale + " is supported, but fallback " + fallback + " isn't.");
        }
        var match = /([a-z]{2,3})(-[A-Z][a-z]{3})(-[A-Z]{2})/.exec(locale);
        if (match !== null) {
            fallback = match[1] + match[3];
            assert.notSameValue(info.supported.indexOf(fallback), -1, "Locale " + locale + " is supported, but fallback " + fallback + " isn't.");
        }
    });
});