michael@0: /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
michael@0: /* This Source Code Form is subject to the terms of the Mozilla Public
michael@0:  * License, v. 2.0. If a copy of the MPL was not distributed with this
michael@0:  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
michael@0: 
michael@0: 
michael@0: /**
michael@0:    File Name:          11.4.1.js
michael@0:    ECMA Section:       11.4.1 the Delete Operator
michael@0:    Description:        returns true if the property could be deleted
michael@0:    returns false if it could not be deleted
michael@0:    Author:             christine@netscape.com
michael@0:    Date:               7 july 1997
michael@0: 
michael@0: */
michael@0: 
michael@0: 
michael@0: var SECTION = "11.4.1";
michael@0: var VERSION = "ECMA_1";
michael@0: startTest();
michael@0: var TITLE   = "The delete operator";
michael@0: 
michael@0: writeHeaderToLog( SECTION + " "+ TITLE);
michael@0: 
michael@0: //    new TestCase( SECTION,   "x=[9,8,7];delete(x[2]);x.length",         2,             eval("x=[9,8,7];delete(x[2]);x.length") );
michael@0: //    new TestCase( SECTION,   "x=[9,8,7];delete(x[2]);x.toString()",     "9,8",         eval("x=[9,8,7];delete(x[2]);x.toString()") );
michael@0: new TestCase( SECTION,   "x=new Date();delete x;typeof(x)",        "undefined",    eval("x=new Date();delete x;typeof(x)") );
michael@0: 
michael@0: //    array[item++] = new TestCase( SECTION,   "delete(x=new Date())",        true,   delete(x=new Date()) );
michael@0: //    array[item++] = new TestCase( SECTION,   "delete('string primitive')",   true,   delete("string primitive") );
michael@0: //    array[item++] = new TestCase( SECTION,   "delete(new String( 'string object' ) )",  true,   delete(new String("string object")) );
michael@0: //    array[item++] = new TestCase( SECTION,   "delete(new Number(12345) )",  true,   delete(new Number(12345)) );
michael@0: new TestCase( SECTION,   "delete(Math.PI)",             false,   delete(Math.PI) );
michael@0: //    array[item++] = new TestCase( SECTION,   "delete(null)",                true,   delete(null) );
michael@0: //    array[item++] = new TestCase( SECTION,   "delete(void(0))",             true,   delete(void(0)) );
michael@0: 
michael@0: // variables declared with the var statement are not deletable.
michael@0: 
michael@0: var abc;
michael@0: new TestCase( SECTION,   "var abc; delete(abc)",        false,   delete abc );
michael@0: 
michael@0: new TestCase(   SECTION,
michael@0:                 "var OB = new MyObject(); for ( p in OB ) { delete p }",
michael@0:                 true,
michael@0:                 eval("var OB = new MyObject(); for ( p in OB ) { delete p }") );
michael@0: 
michael@0: test();
michael@0: 
michael@0: function MyObject() {
michael@0:   this.prop1 = true;
michael@0:   this.prop2 = false;
michael@0:   this.prop3 = null;
michael@0:   this.prop4 = void 0;
michael@0:   this.prop5 = "hi";
michael@0:   this.prop6 = 42;
michael@0:   this.prop7 = new Date();
michael@0:   this.prop8 = Math.PI;
michael@0: }