es6.js revision 1655:3ac5d360070e 
154893Sphantom/*
254893Sphantom * Copyright (c) 2015, Oracle and/or its affiliates. All rights reserved.
318616Sfenner * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
418616Sfenner *
518616Sfenner * This code is free software; you can redistribute it and/or modify it
618616Sfenner * under the terms of the GNU General Public License version 2 only, as
718616Sfenner * published by the Free Software Foundation.
818616Sfenner *
918616Sfenner * This code is distributed in the hope that it will be useful, but WITHOUT
1018616Sfenner * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
1118616Sfenner * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
1218616Sfenner * version 2 for more details (a copy is included in the LICENSE file that
13100787Sfenner * accompanied this code).
14100787Sfenner *
1518616Sfenner * You should have received a copy of the GNU General Public License version
1618616Sfenner * 2 along with this work; if not, write to the Free Software Foundation,
1718616Sfenner * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18100787Sfenner *
19100787Sfenner * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
2018616Sfenner * or visit www.oracle.com if you need additional information or have any
2118616Sfenner * questions.
2218616Sfenner */
2318616Sfenner
2418616Sfenner/**
2518616Sfenner * Make sure ECMAScript 6 features are not available in ES5 mode.
2618616Sfenner *
2754893Sphantom * @test
2818616Sfenner * @run
2918616Sfenner */
3018616Sfenner
3118616Sfennerfunction checkUndefined(name, object) {
3218616Sfenner    if (typeof object[name] !== 'undefined' || name in object) {
3318616Sfenner        Assert.fail(name + ' is defined in ' + object);
3418616Sfenner    }
35100787Sfenner}
36100787Sfenner
37100787SfennercheckUndefined('Symbol', this);
3818616SfennercheckUndefined('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');
67expectError('for (a of [1, 2, 3]) print(a)', 'for-of', 'SyntaxError');
68expectError('for (var a of [1, 2, 3]) print(a)', 'for-of', 'SyntaxError');
69expectError('for (let a of [1, 2, 3]) print(a)', 'for-of', 'SyntaxError');
70expectError('for (const a of [1, 2, 3]) print(a)', 'for-of', 'SyntaxError');
71
72