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