es6.js revision 1626:d99fa86747ee 
1/*
2 * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * Make sure ECMAScript 6 features are not available in ES5 mode.
26 *
27 * @test
28 * @run
29 */
30
31function checkUndefined(name, object) {
32    if (typeof object[name] !== 'undefined' || name in object) {
33        Assert.fail(name + ' is defined in ' + object);
34    }
35}
36
37checkUndefined('Symbol', this);
38checkUndefined('Map', this);
39checkUndefined('Set', this);
40checkUndefined('WeakMap', this);
41checkUndefined('WeakSet', this);
42checkUndefined('getOwnPropertySymbols', Object);
43checkUndefined('entries', Array.prototype);
44checkUndefined('values', Array.prototype);
45checkUndefined('keys', Array.prototype);
46
47function expectError(src, msg, error) {
48    try {
49        eval(src);
50        Assert.fail(msg);
51    } catch (e) {
52        if (e.name !== error) {
53            Assert.fail('Unexpected error: ' + e);
54        }
55    }
56}
57
58expectError('let i = 0', 'let', 'SyntaxError');
59expectError('const i = 0', 'const', 'SyntaxError');
60expectError('for (let i = 0; i < 10; i++) print(i)', 'for-let', 'SyntaxError');
61expectError('0b0', 'numeric literal', 'SyntaxError');
62expectError('0o0', 'numeric litera', 'SyntaxError');
63expectError('`text`', 'template literal', 'SyntaxError');
64expectError('`${ x }`', 'template literal', 'SyntaxError');
65expectError('`text ${ x } text`', 'template literal', 'SyntaxError');
66expectError('f`text`', 'template literal', 'SyntaxError');
67