1// Copyright 2013 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
29function test(expected, holder) {
30  assertEquals(expected, holder.property);
31}
32
33var holder = {}
34holder.__proto__ = null;
35holder.property = "foo";
36delete holder.property;
37test(undefined, holder);
38test(undefined, holder);
39test(undefined, holder);
40holder.property = "bar";
41test("bar", holder);
42test("bar", holder);
43
44// Now the same thing with a nontrivial prototype chain.
45
46function test2(expected, holder) {
47  assertEquals(expected, holder.prop2);
48}
49
50var holder2 = {}
51holder2.prop2 = "foo";
52holder2.__proto__ = null;
53function Receiver() {}
54Receiver.prototype = holder2;
55
56var rec2 = new Receiver();
57delete holder2.prop2;
58
59test2(undefined, rec2);
60test2(undefined, rec2);
61test2(undefined, rec2);
62holder2.prop2 = "bar";
63test2("bar", rec2);
64test2("bar", rec2);
65