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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 | |
16 // contributors may be used to endorse or promote products derived | |
17 // from this software without specific prior written permission. | |
18 // | |
19 // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
20 // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
21 // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS | |
22 // FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE | |
23 // COPYRIGHT OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, | |
24 // INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES | |
25 // (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR | |
26 // SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
27 // HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, | |
28 // STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) | |
29 // ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED | |
30 // OF THE POSSIBILITY OF SUCH DAMAGE. | |
31 | |
32 // Based on LayoutTests/fast/js/Object-keys.html | |
33 | |
34 assertEquals(Object.keys(2), []); | |
35 assertEquals(Object.keys("foo"), ["0", "1", "2"]); | |
36 assertThrows(function () { Object.keys(null) }, TypeError); | |
37 assertThrows(function () { Object.keys(undefined) }, TypeError); | |
38 | |
39 assertEquals(Object.keys({}), []); | |
40 assertEquals(Object.keys({a:null}), ['a']); | |
41 assertEquals(Object.keys({a:null, b:null}), ['a', 'b']); | |
42 assertEquals(Object.keys({b:null, a:null}), ['b', 'a']); | |
43 assertEquals(Object.keys([]), []); | |
44 assertEquals(Object.keys([null]), ['0']); | |
45 assertEquals(Object.keys([null,null]), ['0', '1']); | |
46 assertEquals(Object.keys([null,null,,,,null]), ['0', '1', '5']); | |
47 assertEquals(Object.keys({__proto__:{a:null}}), []); | |
48 assertEquals(Object.keys({__proto__:[1,2,3]}), []); | |
49 var x = []; | |
50 x.__proto__ = [1, 2, 3]; | |
51 assertEquals(Object.keys(x), []); | |
52 assertEquals(Object.keys(function () {}), []); | |
53 | |
54 assertEquals('string', typeof(Object.keys([1])[0])); | |
55 | |
56 function argsTest(a, b, c) { | |
57 assertEquals(['0', '1', '2'], Object.keys(arguments)); | |
58 } | |
59 | |
60 argsTest(1, 2, 3); | |
61 | |
62 var literal = {a: 1, b: 2, c: 3}; | |
63 var keysBefore = Object.keys(literal); | |
64 assertEquals(['a', 'b', 'c'], keysBefore); | |
65 keysBefore[0] = 'x'; | |
66 var keysAfter = Object.keys(literal); | |
67 assertEquals(['a', 'b', 'c'], keysAfter); | |
68 assertEquals(['x', 'b', 'c'], keysBefore); | |
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