1 // Copyright 2010 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 29 function TryGetPrototypeOfNonObject(x) { 30 var caught = 0; 31 try { 32 Object.getPrototypeOf(x); 33 } catch (e) { 34 caught = e; 35 } 36 37 assertTrue(caught instanceof TypeError); 38 }; 39 40 function GetPrototypeOfObject(x) { 41 assertDoesNotThrow(Object.getPrototypeOf(x)); 42 assertNotNull(Object.getPrototypeOf(x)); 43 assertEquals(Object.getPrototypeOf(x), x.__proto__); 44 } 45 46 function F(){}; 47 48 // Non object 49 var x = 10; 50 51 // Object 52 var y = new F(); 53 54 // Make sure that TypeError exceptions are thrown when non-objects are passed 55 // as argument 56 TryGetPrototypeOfNonObject(0); 57 TryGetPrototypeOfNonObject(null); 58 TryGetPrototypeOfNonObject('Testing'); 59 TryGetPrototypeOfNonObject(x); 60 61 // Make sure the real objects have this method and that it returns the 62 // actual prototype object. Also test for Functions and RegExp. 63 GetPrototypeOfObject(this); 64 GetPrototypeOfObject(y); 65 GetPrototypeOfObject({x:5}); 66 GetPrototypeOfObject(F); 67 GetPrototypeOfObject(RegExp); 68 69
