NASHORN-437.js revision 877:cf4d2252d444 
1/*
2 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation.
8 *
9 * This code is distributed in the hope that it will be useful, but WITHOUT
10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
11 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
12 * version 2 for more details (a copy is included in the LICENSE file that
13 * accompanied this code).
14 *
15 * You should have received a copy of the GNU General Public License version
16 * 2 along with this work; if not, write to the Free Software Foundation,
17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
18 *
19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
20 * or visit www.oracle.com if you need additional information or have any
21 * questions.
22 */
23
24/**
25 * NASHORN-437 : Array.prototype.map should return an array whose length should be same as input array length
26 *
27 * @test
28 * @run
29 */
30
31var callbackCount = 0;
32
33function func(kVal, k, arr) {
34    arr.length = 2;
35    callbackCount++;
36    return 42;
37}
38
39var arr = [ 1, 2, 3, 4];
40var res = arr.map(func);
41if (res.length !== 4) {
42   fail("map's result does not have 4 elements");
43}
44
45if (callbackCount !== 2) {
46    fail("callback should be called only twice");
47}
48
49if (res[2] !== undefined || res[3] !== undefined) {
50    fail("last two elements are not undefined");
51}
52