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// Ensure extending an empty packed smi array with a double initializes the
29// array with holes.
30var a = [1,2,3];
31a.length = 0;
32a[0] = 1.4;
33assertEquals(1.4, a[0]);
34assertEquals(undefined, a[1]);
35assertEquals(undefined, a[2]);
36assertEquals(undefined, a[3]);
37
38// Ensure the double array growstub initializes the array with holes.
39function grow_store(a,i,v) {
40  a[i] = v;
41}
42
43var a2 = [1.3];
44grow_store(a2,1,1.4);
45a2.length = 0;
46grow_store(a2,0,1.5);
47assertEquals(1.5, a2[0]);
48assertEquals(undefined, a2[1]);
49assertEquals(undefined, a2[2]);
50assertEquals(undefined, a2[3]);
51
52// Check storing objects using the double grow stub.
53var a3 = [1.3];
54var o = {};
55grow_store(a3, 1, o);
56assertEquals(1.3, a3[0]);
57assertEquals(o, a3[1]);
58
59// Ensure the double array growstub initializes the array with holes.
60function grow_store2(a,i,v) {
61  a[i] = v;
62}
63
64var a4 = [1.3];
65grow_store2(a4,1,1.4);
66a4.length = 0;
67grow_store2(a4,0,1);
68assertEquals(1, a4[0]);
69assertEquals(undefined, a4[1]);
70assertEquals(undefined, a4[2]);
71assertEquals(undefined, a4[3]);
72