/*+
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 * Copyright (c) 2010, 2013, Oracle and/or its affiliates. All rights reserved.+
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 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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 *+
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 * This code is free software; you can redistribute it and/or modify it+
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 * under the terms of the GNU General Public License version 2 only, as+
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 * published by the Free Software Foundation.+
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 *+
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 * This code is distributed in the hope that it will be useful, but WITHOUT+
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 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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 * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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 * version 2 for more details (a copy is included in the LICENSE file that+
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 * accompanied this code).+
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 *+
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 * You should have received a copy of the GNU General Public License version+
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 * 2 along with this work; if not, write to the Free Software Foundation,+
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 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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 *+
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 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
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 * or visit www.oracle.com if you need additional information or have any+
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 * questions.+
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 */+
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+
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/**+
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 * Checks for binary addition operator.+
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 *+
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 * @test+
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 * @run+
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 */+
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+
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// number addition+
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var x = Math.PI + Math.E;+
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print(typeof(x));+
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print(x);+
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+
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// string concatenation+
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x = "hello, " + "world";+
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print(typeof(x));+
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print(x);+
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+
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// string + number+
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x = "E is " + Math.E;+
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print(typeof(x));+
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print(x);+
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+
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// number + string+
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x = Math.PI + " is PI";+
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print(typeof(x));+
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print(x);+
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+
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// number + undefined+
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x = Math.E + undefined;+
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print(typeof(x));+
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print(x);+
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+
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x = undefined + Math.PI;+
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print(typeof(x));+
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print(x);+
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+
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// object with "valueOf" method added to number+
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var obj = {+
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    valueOf: function() { return 44.55; }+
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};+
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+
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x = 45.66 + obj;+
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print(typeof(x));+
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print(x);+
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+
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x = obj + 3.14;+
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print(typeof(x));+
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print(x);+
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+
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// object with "toString" method added to number+
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var obj2 = {+
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    toString: function() { return "obj2.toString"; }+
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};+
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+
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x = "hello, " + obj2;+
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print(typeof(x));+
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print(x);+
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+
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x = obj2 + " hello";+
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print(typeof(x));+
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print(x);+
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