Ichthyostega
806db414dd
* Lumiera source code always was copyrighted by individual contributors * there is no entity "Lumiera.org" which holds any copyrights * Lumiera source code is provided under the GPL Version 2+ == Explanations == Lumiera as a whole is distributed under Copyleft, GNU General Public License Version 2 or above. For this to become legally effective, the ''File COPYING in the root directory is sufficient.'' The licensing header in each file is not strictly necessary, yet considered good practice; attaching a licence notice increases the likeliness that this information is retained in case someone extracts individual code files. However, it is not by the presence of some text, that legally binding licensing terms become effective; rather the fact matters that a given piece of code was provably copyrighted and published under a license. Even reformatting the code, renaming some variables or deleting parts of the code will not alter this legal situation, but rather creates a derivative work, which is likewise covered by the GPL! The most relevant information in the file header is the notice regarding the time of the first individual copyright claim. By virtue of this initial copyright, the first author is entitled to choose the terms of licensing. All further modifications are permitted and covered by the License. The specific wording or format of the copyright header is not legally relevant, as long as the intention to publish under the GPL remains clear. The extended wording was based on a recommendation by the FSF. It can be shortened, because the full terms of the license are provided alongside the distribution, in the file COPYING.
143 lines
3.8 KiB
C++
143 lines
3.8 KiB
C++
/*
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OptionalRef(Test) - verify an optional and switchable object link
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Copyright (C)
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2010, Hermann Vosseler <Ichthyostega@web.de>
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**Lumiera** is free software; you can redistribute it and/or modify it
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under the terms of the GNU General Public License as published by the
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Free Software Foundation; either version 2 of the License, or (at your
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option) any later version. See the file COPYING for further details.
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* *****************************************************************/
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/** @file optional-ref-test.cpp
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** unit test \ref OptionalRef_test
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*/
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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/optional-ref.hpp"
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namespace lib {
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namespace test{
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using ::Test;
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using lib::test::randStr;
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using std::string;
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/***************************************************************************//**
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* @test verify a reference-like wrapper class,
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* used to provide a switchable link to an already existing object.
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* - bottom ref can be detected by bool check
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* - access to bottom ref raises exception
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* - refs can be compared
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* - refs can be changed and copied
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* - access to refs is secure even after destructor invocation
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*
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* @see lib::OptionalRef
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* @see lib::AutoRegistered usage example
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*/
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class OptionalRef_test : public Test
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{
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virtual void
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run (Arg)
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{
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string s1 (randStr(50));
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string s2 (randStr(50));
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typedef OptionalRef<string> SRef;
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SRef r1;
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CHECK (!r1);
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VERIFY_ERROR (BOTTOM_VALUE, r1() );
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VERIFY_ERROR (BOTTOM_VALUE, s1 == r1 );
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VERIFY_ERROR (BOTTOM_VALUE, r1 == s1 );
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CHECK (!r1.points_to (s1));
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r1.link_to (s1);
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CHECK (r1);
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CHECK (r1 == s1);
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CHECK (s1 == r1);
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CHECK (r1.points_to (s1));
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SRef r2(s2);
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CHECK (r2);
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CHECK (r2 == s2);
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CHECK (r2.points_to (s2));
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CHECK (!r2.points_to (s1));
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CHECK (!r1.points_to (s2));
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CHECK (r2 != r1);
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CHECK (r1 != r2);
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r2.link_to (s1);
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CHECK (r2);
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CHECK (r2 == s1);
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CHECK (r2 == r1);
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CHECK (r1 == r2);
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CHECK (r2.points_to (s1));
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CHECK (!r2.points_to (s2));
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r2.clear();
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CHECK (!r2);
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VERIFY_ERROR (BOTTOM_VALUE, r2() );
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VERIFY_ERROR (BOTTOM_VALUE, s1 == r2 );
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VERIFY_ERROR (BOTTOM_VALUE, r2 == s1 );
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VERIFY_ERROR (BOTTOM_VALUE, r2 == s2 );
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CHECK (r1 != r2); // comparison with bottom ref allowed
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CHECK (r2 != r1);
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//OptionalRef objects are copyable values
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r2 = r1;
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CHECK (r2);
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CHECK (r2 == r1);
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CHECK (r1 == r2);
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CHECK (r2 == s1);
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r1.link_to (s2);
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CHECK (r2 != r1); // but they are indeed independent instances
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CHECK (r1 != r2);
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CHECK (r2 == s1);
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CHECK (r2 != s2);
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CHECK (r1 == s2);
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SRef r3(r2);
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CHECK (r3);
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CHECK (r3 == r2);
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CHECK (r2 == r3);
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CHECK (r3 == s1);
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CHECK (r3 != r1);
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CHECK (r1 != r3);
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CHECK (r3 != s2);
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// access is secured even after destruction
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CHECK (r3);
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r3.~SRef(); // don't try this at home!
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CHECK (!r3);
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VERIFY_ERROR (BOTTOM_VALUE, r3 == s1 );
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CHECK (r3 != r2);
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r2.clear();
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CHECK (!r2);
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CHECK (r3 == r2);
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CHECK (r2 == r3);
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}
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};
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LAUNCHER (OptionalRef_test, "unit common");
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}} // namespace lib::test
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