102 lines
3.0 KiB
JavaScript
102 lines
3.0 KiB
JavaScript
/* ***** BEGIN LICENSE BLOCK *****
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* Version: MPL 1.1/GPL 2.0/LGPL 2.1
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*
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* The contents of this file are subject to the Mozilla Public License Version
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* 1.1 (the "License"); you may not use this file except in compliance with
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* the License. You may obtain a copy of the License at
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* http://www.mozilla.org/MPL/
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*
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* Software distributed under the License is distributed on an "AS IS" basis,
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* WITHOUT WARRANTY OF ANY KIND, either express or implied. See the License
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* for the specific language governing rights and limitations under the
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* License.
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*
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* The Original Code is mozilla.org code.
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*
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* The Initial Developer of the Original Code is
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* Netscape Communications Corporation.
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* Portions created by the Initial Developer are Copyright (C) 1998
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* the Initial Developer. All Rights Reserved.
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*
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* Contributor(s):
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* pschwartau@netscape.com
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*
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* Alternatively, the contents of this file may be used under the terms of
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* either the GNU General Public License Version 2 or later (the "GPL"), or
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* the GNU Lesser General Public License Version 2.1 or later (the "LGPL"),
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* in which case the provisions of the GPL or the LGPL are applicable instead
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* of those above. If you wish to allow use of your version of this file only
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* under the terms of either the GPL or the LGPL, and not to allow others to
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* use your version of this file under the terms of the MPL, indicate your
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* decision by deleting the provisions above and replace them with the notice
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* and other provisions required by the GPL or the LGPL. If you do not delete
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* the provisions above, a recipient may use your version of this file under
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* the terms of any one of the MPL, the GPL or the LGPL.
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*
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* ***** END LICENSE BLOCK ***** */
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/*
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* Date: 2001-08-13
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*
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* SUMMARY: Negative test: class A should not see a global variable
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* if the latter is defined too late. But what exactly is "too late"?
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*
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* In this test, the global variable in question is "objB". To define
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* it "too late", it is not enough to have 'var objB = etc.' as the
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* last line of the script. All var statements in top-level script
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* are "hoisted" and processed FIRST (before any assignments).
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*
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* So we define objB on the last line without any 'var'.
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* The fact that objB is an object variable is immaterial.
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*/
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//-----------------------------------------------------------------------------
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var bug:String = '(none)';
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var summary:String = "Negative test: access a variable before it is defined";
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var cnFAILURE:String = 'Expected an exception to be thrown, but none was -';
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class A
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{
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var obj:Object;
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constructor function A()
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{
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obj = objB; // defined below (BUT TOO LATE)
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}
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}
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class B
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{
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var obj:Object;
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constructor function B()
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{
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obj = {};
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}
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}
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class C
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{
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var obj:Object;
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constructor function C()
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{
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obj = new A;
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}
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}
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printBugNumber (bug);
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printStatus (summary);
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// creates a new A; but this depends on objB...
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var objC = new C;
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// see Introduction for why we leave out the 'var'
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objB = new B;
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// WE SHOULD NEVER REACH THIS POINT -
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reportFailure(cnFAILURE);
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