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
28// Flags: --expose-gc
29
30function for_in_null() {
31  try {
32    for (var x in null) {
33      return false;
34    }
35  } catch(e) {
36    return false;
37  }
38  return true;
39}
40
41function for_in_undefined() {
42  try {
43    for (var x in undefined) {
44      return false;
45    }
46  } catch(e) {
47    return false;
48  }
49  return true;
50}
51
52for (var i = 0; i < 10; ++i) {
53  assertTrue(for_in_null());
54  gc();
55}
56
57for (var j = 0; j < 10; ++j) {
58  assertTrue(for_in_undefined());
59  gc();
60}
61
62assertEquals(10, i);
63assertEquals(10, j);
64
65
66function Accumulate(x) {
67  var accumulator = "";
68  for (var i in x) {
69    accumulator += i;
70  }
71  return accumulator;
72}
73
74for (var i = 0; i < 3; ++i) {
75  var elements = Accumulate("abcd");
76  // We do not assume that for-in enumerates elements in order.
77  assertTrue(-1 != elements.indexOf("0"));
78  assertTrue(-1 != elements.indexOf("1"));
79  assertTrue(-1 != elements.indexOf("2"));
80  assertTrue(-1 != elements.indexOf("3"));
81  assertEquals(4, elements.length);
82}
83
84function for_in_string_prototype() {
85
86  var x = new String("abc");
87  x.foo = 19;
88  function B() {
89    this.bar = 5;
90    this[7] = 4;
91  }
92  B.prototype = x;
93
94  var y = new B();
95  y.gub = 13;
96
97  var elements = Accumulate(y);
98  var elements1 = Accumulate(y);
99  // If for-in returns elements in a different order on multiple calls, this
100  // assert will fail.  If that happens, consider if that behavior is OK.
101  assertEquals(elements, elements1, "For-in elements not the same both times.");
102  // We do not assume that for-in enumerates elements in order.
103  assertTrue(-1 != elements.indexOf("0"));
104  assertTrue(-1 != elements.indexOf("1"));
105  assertTrue(-1 != elements.indexOf("2"));
106  assertTrue(-1 != elements.indexOf("7"));
107  assertTrue(-1 != elements.indexOf("foo"));
108  assertTrue(-1 != elements.indexOf("bar"));
109  assertTrue(-1 != elements.indexOf("gub"));
110  assertEquals(13, elements.length);
111
112  elements = Accumulate(x);
113  assertTrue(-1 != elements.indexOf("0"));
114  assertTrue(-1 != elements.indexOf("1"));
115  assertTrue(-1 != elements.indexOf("2"));
116  assertTrue(-1 != elements.indexOf("foo"));
117  assertEquals(6, elements.length);
118}
119
120for_in_string_prototype();
121for_in_string_prototype();
122