addition.js revision 6:5a1b0714df0e 
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 * Checks for binary addition operator.
26 *
27 * @test
28 * @run
29 */
30
31// number addition
32var x = Math.PI + Math.E;
33print(typeof(x));
34print(x);
35
36// string concatenation
37x = "hello, " + "world";
38print(typeof(x));
39print(x);
40
41// string + number
42x = "E is " + Math.E;
43print(typeof(x));
44print(x);
45
46// number + string
47x = Math.PI + " is PI";
48print(typeof(x));
49print(x);
50
51// number + undefined
52x = Math.E + undefined;
53print(typeof(x));
54print(x);
55
56x = undefined + Math.PI;
57print(typeof(x));
58print(x);
59
60// object with "valueOf" method added to number
61var obj = {
62    valueOf: function() { return 44.55; }
63};
64
65x = 45.66 + obj;
66print(typeof(x));
67print(x);
68
69x = obj + 3.14;
70print(typeof(x));
71print(x);
72
73// object with "toString" method added to number
74var obj2 = {
75    toString: function() { return "obj2.toString"; }
76};
77
78x = "hello, " + obj2;
79print(typeof(x));
80print(x);
81
82x = obj2 + " hello";
83print(typeof(x));
84print(x);
85