Ichthyostega
a344604f1b
Clang doesn't allow to declare a private nested class as friend. This is unfortunate, but likely correct to the letter of the standard. As a workaround, now we're creating the instances within a static function of DependencyFactory -- in the end this improves readability A second issue fixed with this changeset is the scope of the marker function. Clang is right, this isn't ADL, thus an inline friend definition is simply not visible outside the class.
108 lines
2.8 KiB
C++
108 lines
2.8 KiB
C++
/*
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Singleton(Test) - unittest for our Singleton template
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Copyright (C) Lumiera.org
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2008, Hermann Vosseler <Ichthyostega@web.de>
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License as
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published by the Free Software Foundation; either version 2 of
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the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to the Free Software
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Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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* *****************************************************/
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#include "lib/test/run.hpp"
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#include "lib/format-string.hpp"
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#include "lib/util.hpp"
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#include "test-target-obj.hpp"
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#include "lib/depend.hpp"
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#include <tr1/functional>
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#include <boost/lexical_cast.hpp>
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#include <iostream>
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using std::tr1::function;
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using boost::lexical_cast;
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using util::isSameObject;
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using util::_Fmt;
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using util::isnil;
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using std::string;
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using std::cout;
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namespace lib {
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namespace test{
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/**
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* Target object to be instantiated as Singleton
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* Allocates a variable amount of additional heap memory
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* and prints diagnostic messages.
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*/
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class TargetObj : public TestTargetObj
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{
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public:
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static int cnt;
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static void setCountParam (uint c) { TargetObj::cnt = c; }
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protected:
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TargetObj () : TestTargetObj(cnt) {}
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friend class lib::DependencyFactory;
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};
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int TargetObj::cnt = 0;
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/*******************************************************************
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* @test implement a Singleton class using our Singleton Template.
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* Expected results: single instance created in static memory,
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* single instance properly destroyed, no memory leaks.
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* @see lib::Depend
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* @see lib::DependencyFactory::InstanceHolder
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*/
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class Singleton_test : public Test
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{
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virtual void
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run (Arg arg)
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{
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uint num= isnil(arg)? 1 : lexical_cast<uint>(arg[1]);
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Depend<TargetObj> singleton;
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cout << _Fmt("testing TargetObj(%d) as Singleton\n") % num;
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TargetObj::setCountParam(num);
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TargetObj& t1 = singleton();
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TargetObj& t2 = singleton();
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CHECK (isSameObject(t1, t2), "not a Singleton, got two different instances." );
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cout << "calling a non-static method on the Singleton instance\n"
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<< string (t1) << "\n";
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}
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};
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/** Register this test class... */
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LAUNCHER (Singleton_test, "unit common");
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}} // namespace lib::test
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