js/tests/js1_3/extensions/proto_10.js

   1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
   2 /* ***** BEGIN LICENSE BLOCK *****
   3  * Version: MPL 1.1/GPL 2.0/LGPL 2.1
   4  *
   5  * The contents of this file are subject to the Mozilla Public License Version
   6  * 1.1 (the "License"); you may not use this file except in compliance with
   7  * the License. You may obtain a copy of the License at
   8  * http://www.mozilla.org/MPL/
   9  *
  10  * Software distributed under the License is distributed on an "AS IS" basis,
  11  * WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
  12  * for the specific language governing rights and limitations under the
  13  * License.
  14  *
  15  * The Original Code is Mozilla Communicator client code, released
  16  * March 31, 1998.
  17  *
  18  * The Initial Developer of the Original Code is
  19  * Netscape Communications Corporation.
  20  * Portions created by the Initial Developer are Copyright (C) 1998
  21  * the Initial Developer. All Rights Reserved.
  22  *
  23  * Contributor(s):
  24  *
  25  * Alternatively, the contents of this file may be used under the terms of
  26  * either the GNU General Public License Version 2 or later (the "GPL"), or
  27  * the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
  28  * in which case the provisions of the GPL or the LGPL are applicable instead
  29  * of those above. If you wish to allow use of your version of this file only
  30  * under the terms of either the GPL or the LGPL, and not to allow others to
  31  * use your version of this file under the terms of the MPL, indicate your
  32  * decision by deleting the provisions above and replace them with the notice
  33  * and other provisions required by the GPL or the LGPL. If you do not delete
  34  * the provisions above, a recipient may use your version of this file under
  35  * the terms of any one of the MPL, the GPL or the LGPL.
  36  *
  37  * ***** END LICENSE BLOCK ***** */
  38
  39 gTestfile = 'proto_10.js';
  40
  41 /**
  42    File Name:          proto_10.js
  43    Section:
  44    Description:        Determining Instance Relationships
  45
  46    This tests Object Hierarchy and Inheritance, as described in the document
  47    Object Hierarchy and Inheritance in JavaScript, last modified on 12/18/97
  48    15:19:34 on http://devedge.netscape.com/.  Current URL:
  49    http://devedge.netscape.com/docs/manuals/communicator/jsobj/contents.htm
  50
  51    This tests the syntax ObjectName.prototype = new PrototypeObject using the
  52    Employee example in the document referenced above.
  53
  54    Author:             christine@netscape.com
  55    Date:               12 november 1997
  56 */
  57
  58 var SECTION = "proto_10";
  59 var VERSION = "JS1_3";
  60 var TITLE   = "Determining Instance Relationships";
  61
  62 startTest();
  63 writeHeaderToLog( SECTION + " "+ TITLE);
  64
  65 function InstanceOf( object, constructor ) {
  66   while ( object != null ) {
  67     if ( object == constructor.prototype ) {
  68       return true;
  69     }
  70     object = object.__proto__;
  71   }
  72   return false;
  73 }
  74 function Employee ( name, dept ) {
  75   this.name = name || "";
  76   this.dept = dept || "general";
  77 }
  78
  79 function Manager () {
  80   this.reports = [];
  81 }
  82 Manager.prototype = new Employee();
  83
  84 function WorkerBee ( name, dept, projs ) {
  85   this.base = Employee;
  86   this.base( name, dept)
  87     this.projects = projs || new Array();
  88 }
  89 WorkerBee.prototype = new Employee();
  90
  91 function SalesPerson () {
  92   this.dept = "sales";
  93   this.quota = 100;
  94 }
  95 SalesPerson.prototype = new WorkerBee();
  96
  97 function Engineer ( name, projs, machine ) {
  98   this.base = WorkerBee;
  99   this.base( name, "engineering", projs )
 100     this.machine = machine || "";
 101 }
 102 Engineer.prototype = new WorkerBee();
 103
 104 var pat = new Engineer();
 105
 106 new TestCase( SECTION,
 107               "pat.__proto__ == Engineer.prototype",
 108               true,
 109               pat.__proto__ == Engineer.prototype );
 110
 111 new TestCase( SECTION,
 112               "pat.__proto__.__proto__ == WorkerBee.prototype",
 113               true,
 114               pat.__proto__.__proto__ == WorkerBee.prototype );
 115
 116 new TestCase( SECTION,
 117               "pat.__proto__.__proto__.__proto__ == Employee.prototype",
 118               true,
 119               pat.__proto__.__proto__.__proto__ == Employee.prototype );
 120
 121 new TestCase( SECTION,
 122               "pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype",
 123               true,
 124               pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype );
 125
 126 new TestCase( SECTION,
 127               "pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null",
 128               true,
 129               pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null );
 130
 131
 132 new TestCase( SECTION,
 133               "InstanceOf( pat, Engineer )",
 134               true,
 135               InstanceOf( pat, Engineer ) );
 136
 137 new TestCase( SECTION,
 138               "InstanceOf( pat, WorkerBee )",
 139               true,
 140               InstanceOf( pat, WorkerBee ) );
 141
 142 new TestCase( SECTION,
 143               "InstanceOf( pat, Employee )",
 144               true,
 145               InstanceOf( pat, Employee ) );
 146
 147 new TestCase( SECTION,
 148               "InstanceOf( pat, Object )",
 149               true,
 150               InstanceOf( pat, Object ) );
 151
 152 new TestCase( SECTION,
 153               "InstanceOf( pat, SalesPerson )",
 154               false,
 155               InstanceOf ( pat, SalesPerson ) );
 156 test();