JSTests/test262/test/intl402/9.2.6_4.js

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

/*---
es5id: 9.2.6_4
description: >
    Tests that LookupSupportedLocales returns an empty list when
    given an empty list.
author: Norbert Lindenberg
includes: [testIntl.js]
---*/

testWithIntlConstructors(function (Constructor) {
    // this test should work equally for both matching algorithms
    ["lookup", "best fit"].forEach(function (matcher) {
        var supported = Constructor.supportedLocalesOf([], {localeMatcher: matcher});
        if (supported.length !== 0) {
            $ERROR("SupportedLocales with matcher " + matcher + " returned a non-empty list for an empty list.");
        }
    });

    return true;
});