1 // Copyright 2009 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 // See: http://code.google.com/p/v8/issues/detail?id=485 29 30 // Ensure that we don't expose the builtins object when calling 31 // builtin functions that use or return "this". 32 33 var global = this; 34 var global2 = (function(){return this;})(); 35 assertEquals(global, global2, "direct call to local function returns global"); 36 37 var builtin = Object.prototype.valueOf; // Builtin function that returns this. 38 39 assertEquals(global, builtin(), "Direct call to builtin"); 40 41 assertEquals(global, builtin.call(), "call() to builtin"); 42 assertEquals(global, builtin.call(null), "call(null) to builtin"); 43 assertEquals(global, builtin.call(undefined), "call(undefined) to builtin"); 44 45 assertEquals(global, builtin.apply(), "apply() to builtin"); 46 assertEquals(global, builtin.apply(null), "apply(null) to builtin"); 47 assertEquals(global, builtin.apply(undefined), "apply(undefined) to builtin"); 48 49 assertEquals(global, builtin.call.call(builtin), "call.call() to builtin"); 50 assertEquals(global, builtin.call.apply(builtin), "call.apply() to builtin"); 51 assertEquals(global, builtin.apply.call(builtin), "apply.call() to builtin"); 52 assertEquals(global, builtin.apply.apply(builtin), "apply.apply() to builtin"); 53 54 55 // Builtin that depends on value of this to compute result. 56 var builtin2 = Object.prototype.toString; 57 58 // Global object has class "Object" according to Object.prototype.toString. 59 // Builtins object displays as "[object builtins]". 60 assertTrue("[object builtins]" != builtin2(), "Direct call to toString"); 61 assertTrue("[object builtins]" != builtin2.call(), "call() to toString"); 62 assertTrue("[object builtins]" != builtin2.apply(), "call() to toString"); 63 assertTrue("[object builtins]" != builtin2.call.call(builtin2), 64 "call.call() to toString"); 65
