JezK
Edit File: object-get-own-property-names.js
// Copyright 2009 the V8 project authors. All rights reserved. // Redistribution and use in source and binary forms, with or without // modification, are permitted provided that the following conditions are // met: // // * Redistributions of source code must retain the above copyright // notice, this list of conditions and the following disclaimer. // * Redistributions in binary form must reproduce the above // copyright notice, this list of conditions and the following // disclaimer in the documentation and/or other materials provided // with the distribution. // * Neither the name of Google Inc. nor the names of its // contributors may be used to endorse or promote products derived // from this software without specific prior written permission. // // THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS // "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT // LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR // A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT // OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, // SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT // LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, // DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY // THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT // (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE // OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. // Test ES5 section 15.2.3.4 Object.getOwnPropertyNames. // Check simple cases. var obj = { a: 1, b: 2}; var propertyNames = Object.getOwnPropertyNames(obj); propertyNames.sort(); assertEquals(2, propertyNames.length); assertEquals("a", propertyNames[0]); assertEquals("b", propertyNames[1]); var obj = { a: function(){}, b: function(){} }; var propertyNames = Object.getOwnPropertyNames(obj); propertyNames.sort(); assertEquals(2, propertyNames.length); assertEquals("a", propertyNames[0]); assertEquals("b", propertyNames[1]); // Check slow case var obj = { a: 1, b: 2, c: 3 }; delete obj.b; var propertyNames = Object.getOwnPropertyNames(obj) propertyNames.sort(); assertEquals(2, propertyNames.length); assertEquals("a", propertyNames[0]); assertEquals("c", propertyNames[1]); // Check that non-enumerable properties are being returned. var propertyNames = Object.getOwnPropertyNames([1, 2]); propertyNames.sort(); assertEquals(3, propertyNames.length); assertEquals("0", propertyNames[0]); assertEquals("1", propertyNames[1]); assertEquals("string", typeof propertyNames[0]); assertEquals("string", typeof propertyNames[1]); assertEquals("length", propertyNames[2]); // Check that no proto properties are returned. var obj = { foo: "foo" }; obj.__proto__ = { bar: "bar" }; propertyNames = Object.getOwnPropertyNames(obj); propertyNames.sort(); assertEquals(1, propertyNames.length); assertEquals("foo", propertyNames[0]); // Check that getter properties are returned. var obj = {}; obj.__defineGetter__("getter", function() {}); propertyNames = Object.getOwnPropertyNames(obj); propertyNames.sort(); assertEquals(1, propertyNames.length); assertEquals("getter", propertyNames[0]); try { Object.getOwnPropertyNames(4); assertTrue(false); } catch (e) { assertTrue(/on non-object/.test(e)); } try { Object.getOwnPropertyNames("foo"); assertTrue(false); } catch (e) { assertTrue(/on non-object/.test(e)); } try { Object.getOwnPropertyNames(undefined); assertTrue(false); } catch (e) { assertTrue(/on non-object/.test(e)); } try { Object.getOwnPropertyNames(null); assertTrue(false); } catch (e) { assertTrue(/on non-object/.test(e)); }