Steve Block | d0582a6 | 2009-12-15 09:54:21 +0000 | [diff] [blame^] | 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"); |