1// Copyright 2012 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// Delete elements of a String object.
29var TIPLI = "tipli"
30var so = new String(TIPLI);
31var length = so.length;
32
33for (var i = 0; i < length; i++) {
34  assertFalse(delete so[i]);
35  assertThrows("'use strict'; delete so[i];", TypeError);
36  assertFalse(delete so[i.toString()]);
37  assertThrows("'use strict'; delete so[i.toString()];", TypeError);
38}
39
40assertEquals(length, so.length);
41assertEquals(new String(TIPLI), so);
42
43// Delete elements of an Array.
44var arr = new Array(length);
45
46for (var i = 0; i < length; i++) {
47  arr[i] = i;
48  Object.defineProperty(arr, i, { configurable: false });
49}
50
51for (var i = 0; i < length; i++) {
52  assertFalse(delete arr[i]);
53  assertThrows("'use strict'; delete arr[i];", TypeError);
54  assertFalse(delete arr[i.toString()]);
55  assertThrows("'use strict'; delete arr[i.toString()];", TypeError);
56  assertEquals(i, arr[i]);
57}
58
59assertEquals(length, arr.length);
60assertTrue(delete arr[length]);
61
62// Delete an element of an Object.
63var INDEX = 28;
64var obj = new Object();
65
66obj[INDEX] = TIPLI;
67Object.defineProperty(obj, INDEX, { configurable: false });
68
69assertFalse(delete obj[INDEX]);
70assertThrows("'use strict'; delete obj[INDEX];", TypeError);
71assertFalse(delete obj[INDEX.toString()]);
72assertThrows("'use strict'; delete obj[INDEX.toString()];", TypeError);
73assertEquals(TIPLI, obj[INDEX]);
74assertTrue(delete arr[INDEX+1]);
75