1// Copyright (c) 2006 Apple Computer, Inc. All rights reserved.
2//
3// Redistribution and use in source and binary forms, with or without
4// modification, are permitted provided that the following conditions
5// are met:
6//
7// 1. Redistributions of source code must retain the above copyright
8// notice, this list of conditions and the following disclaimer.
9//
10// 2. Redistributions in binary form must reproduce the above
11// copyright notice, this list of conditions and the following
12// disclaimer in the documentation and/or other materials provided
13// with the distribution.
14//
15// 3. Neither the name of the copyright holder(s) nor the names of any
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18//
19// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
20// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
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22// FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE
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30// OF THE POSSIBILITY OF SUCH DAMAGE.
31
32// Based on LayoutTests/fast/js/Object-keys.html
33
34assertThrows(function () { Object.keys(2) }, TypeError);
35assertThrows(function () { Object.keys("foo") }, TypeError);
36assertThrows(function () { Object.keys(null) }, TypeError);
37assertThrows(function () { Object.keys(undefined) }, TypeError);
38
39assertEquals(Object.keys({}), []);
40assertEquals(Object.keys({a:null}), ['a']);
41assertEquals(Object.keys({a:null, b:null}), ['a', 'b']);
42assertEquals(Object.keys({b:null, a:null}), ['b', 'a']);
43assertEquals(Object.keys([]), []);
44assertEquals(Object.keys([null]), ['0']);
45assertEquals(Object.keys([null,null]), ['0', '1']);
46assertEquals(Object.keys([null,null,,,,null]), ['0', '1', '5']);
47assertEquals(Object.keys({__proto__:{a:null}}), []);
48assertEquals(Object.keys({__proto__:[1,2,3]}), []);
49var x = [];
50x.__proto__ = [1, 2, 3];
51assertEquals(Object.keys(x), []);
52assertEquals(Object.keys(function () {}), []);
53
54assertEquals('string', typeof(Object.keys([1])[0]));
55
56function argsTest(a, b, c) {
57  assertEquals(['0', '1', '2'], Object.keys(arguments));
58}
59
60argsTest(1, 2, 3);
61
62var literal = {a: 1, b: 2, c: 3};
63var keysBefore = Object.keys(literal);
64assertEquals(['a', 'b', 'c'], keysBefore);
65keysBefore[0] = 'x';
66var keysAfter = Object.keys(literal);
67assertEquals(['a', 'b', 'c'], keysAfter);
68assertEquals(['x', 'b', 'c'], keysBefore);
69