зеркало из https://github.com/mozilla/pjs.git
84 строки
2.1 KiB
JavaScript
84 строки
2.1 KiB
JavaScript
/*
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* The contents of this file are subject to the Netscape Public
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* License Version 1.1 (the "License"); you may not use this file
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* except in compliance with the License. You may obtain a copy of
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* the License at http://www.mozilla.org/NPL/
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*
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* Software distributed under the License is distributed on an
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* "AS IS" basis, WITHOUT WARRANTY OF ANY KIND, either expressed
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* or implied. See the License for the specific language governing
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* rights and limitations under the 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 Netscape
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* Communications Corporation. Portions created by Netscape are
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* Copyright (C) 1998 Netscape Communications Corporation.
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* All Rights Reserved.
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*
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* Contributor(s): pschwartau@netscape.com
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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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