1/* The contents of this file are subject to the Netscape Public 2 * License Version 1.1 (the "License"); you may not use this file 3 * except in compliance with the License. You may obtain a copy of 4 * the License at http://www.mozilla.org/NPL/ 5 * 6 * Software distributed under the License is distributed on an "AS 7 * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or 8 * implied. See the License for the specific language governing 9 * rights and limitations under the License. 10 * 11 * The Original Code is Mozilla Communicator client code, released March 12 * 31, 1998. 13 * 14 * The Initial Developer of the Original Code is Netscape Communications 15 * Corporation. Portions created by Netscape are 16 * Copyright (C) 1998 Netscape Communications Corporation. All 17 * Rights Reserved. 18 * 19 * Contributor(s): 20 * 21 */ 22/** 23 File Name: proto_10.js 24 Section: 25 Description: Determining Instance Relationships 26 27 This tests Object Hierarchy and Inheritance, as described in the document 28 Object Hierarchy and Inheritance in JavaScript, last modified on 12/18/97 29 15:19:34 on http://devedge.netscape.com/. Current URL: 30 http://devedge.netscape.com/docs/manuals/communicator/jsobj/contents.htm 31 32 This tests the syntax ObjectName.prototype = new PrototypeObject using the 33 Employee example in the document referenced above. 34 35 Author: christine@netscape.com 36 Date: 12 november 1997 37*/ 38 39 var SECTION = "proto_10"; 40 var VERSION = "JS1_3"; 41 var TITLE = "Determining Instance Relationships"; 42 43 startTest(); 44 writeHeaderToLog( SECTION + " "+ TITLE); 45 46 var testcases = new Array(); 47 48function InstanceOf( object, constructor ) { 49 while ( object != null ) { 50 if ( object == constructor.prototype ) { 51 return true; 52 } 53 object = object.__proto__; 54 } 55 return false; 56} 57function Employee ( name, dept ) { 58 this.name = name || ""; 59 this.dept = dept || "general"; 60} 61 62function Manager () { 63 this.reports = []; 64} 65Manager.prototype = new Employee(); 66 67function WorkerBee ( name, dept, projs ) { 68 this.base = Employee; 69 this.base( name, dept) 70 this.projects = projs || new Array(); 71} 72WorkerBee.prototype = new Employee(); 73 74function SalesPerson () { 75 this.dept = "sales"; 76 this.quota = 100; 77} 78SalesPerson.prototype = new WorkerBee(); 79 80function Engineer ( name, projs, machine ) { 81 this.base = WorkerBee; 82 this.base( name, "engineering", projs ) 83 this.machine = machine || ""; 84} 85Engineer.prototype = new WorkerBee(); 86 87function test() { 88 for ( tc=0; tc < testcases.length; tc++ ) { 89 testcases[tc].passed = writeTestCaseResult( 90 testcases[tc].expect, 91 testcases[tc].actual, 92 testcases[tc].description +" = "+ 93 testcases[tc].actual ); 94 95 testcases[tc].reason += ( testcases[tc].passed ) ? "" : "wrong value "; 96 } 97 stopTest(); 98 return ( testcases ); 99} 100 var pat = new Engineer() 101 102 testcases[tc++] = new TestCase( SECTION, 103 "pat.__proto__ == Engineer.prototype", 104 true, 105 pat.__proto__ == Engineer.prototype ); 106 107 testcases[tc++] = new TestCase( SECTION, 108 "pat.__proto__.__proto__ == WorkerBee.prototype", 109 true, 110 pat.__proto__.__proto__ == WorkerBee.prototype ); 111 112 testcases[tc++] = new TestCase( SECTION, 113 "pat.__proto__.__proto__.__proto__ == Employee.prototype", 114 true, 115 pat.__proto__.__proto__.__proto__ == Employee.prototype ); 116 117 testcases[tc++] = new TestCase( SECTION, 118 "pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype", 119 true, 120 pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype ); 121 122 testcases[tc++] = new TestCase( SECTION, 123 "pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null", 124 true, 125 pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null ); 126 127 128 testcases[tc++] = new TestCase( SECTION, 129 "InstanceOf( pat, Engineer )", 130 true, 131 InstanceOf( pat, Engineer ) ); 132 133 testcases[tc++] = new TestCase( SECTION, 134 "InstanceOf( pat, WorkerBee )", 135 true, 136 InstanceOf( pat, WorkerBee ) ); 137 138 testcases[tc++] = new TestCase( SECTION, 139 "InstanceOf( pat, Employee )", 140 true, 141 InstanceOf( pat, Employee ) ); 142 143 testcases[tc++] = new TestCase( SECTION, 144 "InstanceOf( pat, Object )", 145 true, 146 InstanceOf( pat, Object ) ); 147 148 testcases[tc++] = new TestCase( SECTION, 149 "InstanceOf( pat, SalesPerson )", 150 false, 151 InstanceOf ( pat, SalesPerson ) ); 152 test(); 153