for-in.js revision a7e24c173cf37484693b9abb38e494fa7bd7baeb 
1// Copyright 2008 the V8 project authors. All rights reserved.
2// Redistribution and use in source and binary forms, with or without
3// modification, are permitted provided that the following conditions are
4// met:
5//
6//     * Redistributions of source code must retain the above copyright
7//       notice, this list of conditions and the following disclaimer.
8//     * Redistributions in binary form must reproduce the above
9//       copyright notice, this list of conditions and the following
10//       disclaimer in the documentation and/or other materials provided
11//       with the distribution.
12//     * Neither the name of Google Inc. nor the names of its
13//       contributors may be used to endorse or promote products derived
14//       from this software without specific prior written permission.
15//
16// THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
17// "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
18// LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
19// A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
20// OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
21// SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
22// LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23// DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24// THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25// (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
26// OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28function props(x) {
29  var array = [];
30  for (var p in x) array.push(p);
31  return array.sort();
32}
33
34assertEquals(0, props({}).length);
35assertEquals(1, props({x:1}).length);
36assertEquals(2, props({x:1, y:2}).length);
37
38assertArrayEquals(["x"], props({x:1}));
39assertArrayEquals(["x", "y"], props({x:1, y:2}));
40assertArrayEquals(["x", "y", "zoom"], props({x:1, y:2, zoom:3}));
41
42assertEquals(0, props([]).length);
43assertEquals(1, props([1]).length);
44assertEquals(2, props([1,2]).length);
45
46assertArrayEquals(["0"], props([1]));
47assertArrayEquals(["0", "1"], props([1,2]));
48assertArrayEquals(["0", "1", "2"], props([1,2,3]));
49
50var o = {};
51var a = [];
52for (var i = 0x0020; i < 0x01ff; i+=2) {
53  var s = 'char:' + String.fromCharCode(i);
54  a.push(s);
55  o[s] = i;
56}
57assertArrayEquals(a, props(o));
58
59var a = [];
60assertEquals(0, props(a).length);
61a[Math.pow(2,30)-1] = 0;
62assertEquals(1, props(a).length);
63a[Math.pow(2,31)-1] = 0;
64assertEquals(2, props(a).length);
65a[1] = 0;
66assertEquals(3, props(a).length);
67
68for (var hest = 'hest' in {}) { }
69assertEquals('hest', hest);
70
71var result = '';
72for (var p in {a : [0], b : 1}) { result += p; }
73assertEquals('ab', result);
74
75var result = '';
76for (var p in {a : {v:1}, b : 1}) { result += p; }
77assertEquals('ab', result);
78
79var result = '';
80for (var p in { get a() {}, b : 1}) { result += p; }
81assertEquals('ab', result);
82
83var result = '';
84for (var p in { get a() {}, set a(x) {}, b : 1}) { result += p; }
85assertEquals('ab', result);
86
87