Ichthyostega
155bf95ce5
this bit of Sed magic relies on the fact that we happen to write
the almost correct class name of a test into the header comment.
HOWTO:
for F in $(find tests -type f \( -name '*.cpp' \) -exec egrep -q '§§TODO§§' {} \; -print);
do sed -r -i -e'
2 {h;x;s/\s+(.+)\(Test\).*$/\\ref \1_test/;x};
/§§TODO§§/ {s/§§TODO§§//;G;s/\n//}'
$F;
done
143 lines
4.2 KiB
C++
143 lines
4.2 KiB
C++
/*
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MultiFactSingleton(Test) - using MultiFact to manage a family of singletons
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Copyright (C) Lumiera.org
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2009, 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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/** @file multifact-singleton-test.cpp
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** unit test \ref MultiFactSingleton_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/multifact.hpp"
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#include "lib/format-cout.hpp"
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#include "lib/util.hpp"
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#include <boost/lexical_cast.hpp>
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#include <string>
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namespace lib {
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namespace test{
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using boost::lexical_cast;
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using lib::test::showSizeof;
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using util::isSameObject;
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using util::isnil;
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using std::ostream;
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using std::string;
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using lumiera::error::LUMIERA_ERROR_INVALID;
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namespace { // hierarchy of test dummy objects
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struct Interface
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{
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virtual ~Interface() {};
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virtual operator string () const =0;
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};
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enum theID
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{ ONE = 1
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, TWO
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, THR
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, FOU
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};
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typedef factory::MultiFact<Interface&, theID> TestFactory;
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template<theID ii>
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class Implementation
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: public Interface
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{
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operator string() const override
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{
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return "Impl-"+lexical_cast<string> (ii);
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}
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};
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/** Factory instance for the tests... */
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TestFactory theFact;
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// Configure the products to be fabricated....
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TestFactory::Singleton<Implementation<ONE> > holder1 (theFact,ONE);
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TestFactory::Singleton<Implementation<TWO> > holder2 (theFact,TWO);
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TestFactory::Singleton<Implementation<THR> > holder3 (theFact,THR);
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TestFactory::Singleton<Implementation<FOU> > holder4 (theFact,FOU);
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}
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/******************************************************************//**
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* @test verify the use of the MultiFact template to access Singletons.
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* While generally speaking the MultiFact allows us to address
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* and invoke several "production lines" by ID, an obvious
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* use case would be to access a "family" of singletons
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* through this mechanism. And indeed, \c MultiFact::Singleton
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* is a preconfigured shortcut for this use case. The actual
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* singleton access factories are placed into a static context
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* (here in the anonymous namespace above) and their access
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* operation is wired as "factory function".
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* - we use a hierarchy of test dummy objects
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* - we set up a singleton factory for several subclasses
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* - the registration happens automatically in the ctor
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* - we verify that we indeed get the correct flavour.
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*
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* @see lib::MultiFact
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*/
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class MultiFactSingleton_test : public Test
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{
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void
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run (Arg)
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{
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cout << theFact(ONE) << endl;
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cout << theFact(TWO) << endl;
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cout << theFact(THR) << endl;
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cout << theFact(FOU) << endl;
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cout << showSizeof (theFact) << endl;
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Interface & o1 = theFact(ONE);
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Interface & o2 = theFact(ONE);
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CHECK (isSameObject(o1,o2));
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TestFactory anotherFact;
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CHECK (isnil (anotherFact));
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VERIFY_ERROR (INVALID, anotherFact(ONE) );
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TestFactory::Singleton<Implementation<ONE> > anotherSingletonHolder (anotherFact,ONE);
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Interface & o3 = anotherFact(ONE);
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CHECK (isSameObject(o2,o3));
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}
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};
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/** Register this test class... */
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LAUNCHER (MultiFactSingleton_test, "unit common");
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}} // namespace lib::test
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