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// Test ES5 section 15.2.3.4 Object.getOwnPropertyNames. 29 30// Check simple cases. 31var obj = { a: 1, b: 2}; 32var propertyNames = Object.getOwnPropertyNames(obj); 33propertyNames.sort(); 34assertEquals(2, propertyNames.length); 35assertEquals("a", propertyNames[0]); 36assertEquals("b", propertyNames[1]); 37 38var obj = { a: function(){}, b: function(){} }; 39var propertyNames = Object.getOwnPropertyNames(obj); 40propertyNames.sort(); 41assertEquals(2, propertyNames.length); 42assertEquals("a", propertyNames[0]); 43assertEquals("b", propertyNames[1]); 44 45// Check slow case 46var obj = { a: 1, b: 2, c: 3 }; 47delete obj.b; 48var propertyNames = Object.getOwnPropertyNames(obj) 49propertyNames.sort(); 50assertEquals(2, propertyNames.length); 51assertEquals("a", propertyNames[0]); 52assertEquals("c", propertyNames[1]); 53 54// Check that non-enumerable properties are being returned. 55var propertyNames = Object.getOwnPropertyNames([1, 2]); 56propertyNames.sort(); 57assertEquals(3, propertyNames.length); 58assertEquals("0", propertyNames[0]); 59assertEquals("1", propertyNames[1]); 60assertEquals("string", typeof propertyNames[0]); 61assertEquals("string", typeof propertyNames[1]); 62assertEquals("length", propertyNames[2]); 63 64// Check that no proto properties are returned. 65var obj = { foo: "foo" }; 66obj.__proto__ = { bar: "bar" }; 67propertyNames = Object.getOwnPropertyNames(obj); 68propertyNames.sort(); 69assertEquals(1, propertyNames.length); 70assertEquals("foo", propertyNames[0]); 71 72// Check that getter properties are returned. 73var obj = {}; 74obj.__defineGetter__("getter", function() {}); 75propertyNames = Object.getOwnPropertyNames(obj); 76propertyNames.sort(); 77assertEquals(1, propertyNames.length); 78assertEquals("getter", propertyNames[0]); 79 80// Check that implementation does not access Array.prototype. 81var savedConcat = Array.prototype.concat; 82Array.prototype.concat = function() { return []; } 83propertyNames = Object.getOwnPropertyNames({0: 'foo', bar: 'baz'}); 84assertEquals(2, propertyNames.length); 85assertEquals('0', propertyNames[0]); 86assertEquals('bar', propertyNames[1]); 87assertSame(Array.prototype, propertyNames.__proto__); 88Array.prototype.concat = savedConcat; 89 90try { 91 Object.getOwnPropertyNames(4); 92 assertTrue(false); 93} catch (e) { 94 assertTrue(/on non-object/.test(e)); 95} 96 97try { 98 Object.getOwnPropertyNames("foo"); 99 assertTrue(false); 100} catch (e) { 101 assertTrue(/on non-object/.test(e)); 102} 103 104try { 105 Object.getOwnPropertyNames(undefined); 106 assertTrue(false); 107} catch (e) { 108 assertTrue(/on non-object/.test(e)); 109} 110 111try { 112 Object.getOwnPropertyNames(null); 113 assertTrue(false); 114} catch (e) { 115 assertTrue(/on non-object/.test(e)); 116} 117