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38 gTestfile = 'instanceof-001.js';
41 * File Name: instanceof-001.js
42 * ECMA Section: 11.8.6
45 * RelationalExpression instanceof Identifier
47 * Author: christine@netscape.com
48 * Date: 2 September 1998
50 var SECTION = "instanceof-001";
51 var VERSION = "ECMA_2";
52 var TITLE = "instanceof"
55 writeHeaderToLog( SECTION + " "+ TITLE);
57 function InstanceOf( object_1, object_2, expect ) {
58 result = object_1 instanceof object_2;
62 "(" + object_1 + ") instanceof " + object_2,
67 function Gen3(value) {
70 this.toString = new Function ( "return \"(Gen\"+this.generation+\" instance)\"" );
73 Gen3.__proto__.toString = new Function( "return \"(\"+this.name+\" object)\"");
75 function Gen2(value) {
80 Gen2.prototype = new Gen3();
82 function Gen1(value) {
87 Gen1.prototype = new Gen2();
89 function Gen0(value) {
94 Gen0.prototype = new Gen1();
97 function GenA(value) {
99 this.generation = "A";
100 this.toString = new Function ( "return \"(instance of Gen\"+this.generation+\")\"" );
103 GenA.prototype = new Gen0();
106 function GenB(value) {
108 this.generation = "B";
109 this.toString = new Function ( "return \"(instance of Gen\"+this.generation+\")\"" );
112 GenB.prototype = void 0;
114 // RelationalExpression is not an object.
116 InstanceOf( true, Boolean, false );
117 InstanceOf( new Boolean(false), Boolean, true );
119 // __proto__ of RelationalExpression is null. should return false
121 genA.__proto__ = null;
123 InstanceOf( genA, GenA, false );
125 // RelationalExpression.__proto__ == (but not ===) Identifier.prototype
127 InstanceOf( new Gen2(), Gen0, false );
128 InstanceOf( new Gen2(), Gen1, false );
129 InstanceOf( new Gen2(), Gen2, true );
130 InstanceOf( new Gen2(), Gen3, true );
132 // RelationalExpression.__proto__.__proto__ === Identifier.prototype
133 InstanceOf( new Gen0(), Gen0, true );
134 InstanceOf( new Gen0(), Gen1, true );
135 InstanceOf( new Gen0(), Gen2, true );
136 InstanceOf( new Gen0(), Gen3, true );
138 InstanceOf( new Gen0(), Object, true );
139 InstanceOf( new Gen0(), Function, false );
141 InstanceOf( Gen0, Function, true );
142 InstanceOf( Gen0, Object, true );