tests/mozilla/js1_3/inherit/proto_10.js

   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
  48 function 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 }
  57 function Employee ( name, dept ) {
  58      this.name = name || "";
  59      this.dept = dept || "general";
  60 }
  61
  62 function Manager () {
  63      this.reports = [];
  64 }
  65 Manager.prototype = new Employee();
  66
  67 function WorkerBee ( name, dept, projs ) {
  68     this.base = Employee;
  69     this.base( name, dept)
  70     this.projects = projs || new Array();
  71 }
  72 WorkerBee.prototype = new Employee();
  73
  74 function SalesPerson () {
  75     this.dept = "sales";
  76     this.quota = 100;
  77 }
  78 SalesPerson.prototype = new WorkerBee();
  79
  80 function Engineer ( name, projs, machine ) {
  81     this.base = WorkerBee;
  82     this.base( name, "engineering", projs )
  83     this.machine = machine || "";
  84 }
  85 Engineer.prototype = new WorkerBee();
  86
  87 function 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();