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comparison: js/src/tests/ecma_2/extensions/instanceof-002.js
js/src/tests/ecma_2/extensions/instanceof-002.js
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| 1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */ | |
| 2 /* This Source Code Form is subject to the terms of the Mozilla Public | |
| 3 * License, v. 2.0. If a copy of the MPL was not distributed with this | |
| 4 * file, You can obtain one at http://mozilla.org/MPL/2.0/. */ | |
| 5 | |
| 6 | |
| 7 /** | |
| 8 File Name: instanceof-002.js | |
| 9 Section: | |
| 10 Description: Determining Instance Relationships | |
| 11 | |
| 12 This test is the same as js1_3/inherit/proto-002, except that it uses | |
| 13 the builtin instanceof operator rather than a user-defined function | |
| 14 called InstanceOf. | |
| 15 | |
| 16 This tests Object Hierarchy and Inheritance, as described in the document | |
| 17 Object Hierarchy and Inheritance in JavaScript, last modified on 12/18/97 | |
| 18 15:19:34 on http://devedge.netscape.com/. Current URL: | |
| 19 http://devedge.netscape.com/docs/manuals/communicator/jsobj/contents.htm | |
| 20 | |
| 21 This tests the syntax ObjectName.prototype = new PrototypeObject using the | |
| 22 Employee example in the document referenced above. | |
| 23 | |
| 24 Author: christine@netscape.com | |
| 25 Date: 12 november 1997 | |
| 26 */ | |
| 27 // onerror = err; | |
| 28 | |
| 29 var SECTION = "instanceof-002"; | |
| 30 var VERSION = "ECMA_2"; | |
| 31 var TITLE = "Determining Instance Relationships"; | |
| 32 | |
| 33 startTest(); | |
| 34 writeHeaderToLog( SECTION + " "+ TITLE); | |
| 35 | |
| 36 function InstanceOf( object, constructor ) { | |
| 37 while ( object != null ) { | |
| 38 if ( object == constructor.prototype ) { | |
| 39 return true; | |
| 40 } | |
| 41 object = object.__proto__; | |
| 42 } | |
| 43 return false; | |
| 44 } | |
| 45 | |
| 46 function Employee ( name, dept ) { | |
| 47 this.name = name || ""; | |
| 48 this.dept = dept || "general"; | |
| 49 } | |
| 50 | |
| 51 function Manager () { | |
| 52 this.reports = []; | |
| 53 } | |
| 54 Manager.prototype = new Employee(); | |
| 55 | |
| 56 function WorkerBee ( name, dept, projs ) { | |
| 57 this.base = Employee; | |
| 58 this.base( name, dept) | |
| 59 this.projects = projs || new Array(); | |
| 60 } | |
| 61 WorkerBee.prototype = new Employee(); | |
| 62 | |
| 63 function SalesPerson () { | |
| 64 this.dept = "sales"; | |
| 65 this.quota = 100; | |
| 66 } | |
| 67 SalesPerson.prototype = new WorkerBee(); | |
| 68 | |
| 69 function Engineer ( name, projs, machine ) { | |
| 70 this.base = WorkerBee; | |
| 71 this.base( name, "engineering", projs ) | |
| 72 this.machine = machine || ""; | |
| 73 } | |
| 74 Engineer.prototype = new WorkerBee(); | |
| 75 | |
| 76 var pat = new Engineer(); | |
| 77 | |
| 78 new TestCase( SECTION, | |
| 79 "pat.__proto__ == Engineer.prototype", | |
| 80 true, | |
| 81 pat.__proto__ == Engineer.prototype ); | |
| 82 | |
| 83 new TestCase( SECTION, | |
| 84 "pat.__proto__.__proto__ == WorkerBee.prototype", | |
| 85 true, | |
| 86 pat.__proto__.__proto__ == WorkerBee.prototype ); | |
| 87 | |
| 88 new TestCase( SECTION, | |
| 89 "pat.__proto__.__proto__.__proto__ == Employee.prototype", | |
| 90 true, | |
| 91 pat.__proto__.__proto__.__proto__ == Employee.prototype ); | |
| 92 | |
| 93 new TestCase( SECTION, | |
| 94 "pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype", | |
| 95 true, | |
| 96 pat.__proto__.__proto__.__proto__.__proto__ == Object.prototype ); | |
| 97 | |
| 98 new TestCase( SECTION, | |
| 99 "pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null", | |
| 100 true, | |
| 101 pat.__proto__.__proto__.__proto__.__proto__.__proto__ == null ); | |
| 102 | |
| 103 new TestCase( SECTION, | |
| 104 "pat instanceof Engineer", | |
| 105 true, | |
| 106 pat instanceof Engineer ); | |
| 107 | |
| 108 new TestCase( SECTION, | |
| 109 "pat instanceof WorkerBee )", | |
| 110 true, | |
| 111 pat instanceof WorkerBee ); | |
| 112 | |
| 113 new TestCase( SECTION, | |
| 114 "pat instanceof Employee )", | |
| 115 true, | |
| 116 pat instanceof Employee ); | |
| 117 | |
| 118 new TestCase( SECTION, | |
| 119 "pat instanceof Object )", | |
| 120 true, | |
| 121 pat instanceof Object ); | |
| 122 | |
| 123 new TestCase( SECTION, | |
| 124 "pat instanceof SalesPerson )", | |
| 125 false, | |
| 126 pat instanceof SalesPerson ); | |
| 127 test(); |
