test262/test/intl402/6.2.2_c.js

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

/*---
es5id: 6.2.2_c
description: >
    Tests that language tags with invalid subtag sequences are not
    accepted.
author: Norbert Lindenberg
includes: [testIntl.js]
---*/

var invalidLanguageTags = [
    "", // empty tag
    "i", // singleton alone
    "x", // private use without subtag
    "u", // extension singleton in first place
    "419", // region code in first place
    "u-nu-latn-cu-bob", // extension sequence without language
    "hans-cmn-cn", // "hans" could theoretically be a 4-letter language code,
                   // but those can't be followed by extlang codes.
    "cmn-hans-cn-u-u", // duplicate singleton
    "cmn-hans-cn-t-u-ca-u", // duplicate singleton
    "de-gregory-gregory", // duplicate variant
    "*", // language range
    "de-*", // language range
    "中文", // non-ASCII letters
    "en-ß", // non-ASCII letters
    "ıd" // non-ASCII letters
];

testWithIntlConstructors(function (Constructor) {
    invalidLanguageTags.forEach(function (tag) {
        // this must throw an exception for an invalid language tag
        assert.throws(RangeError, function() {
            var obj = new Constructor([tag]);
        }, "Invalid language tag " + tag + " was not rejected.");
    });
});