Ichthyostega
bcbd05d7eb
using our util::_Fmt front-end helps to reduce the code size, since all usages rely on a single inclusion of boost::format including boost::format via header can cause quite some code bloat NOTE: partial solution, still some further includes to reorganise
160 lines
5 KiB
C++
160 lines
5 KiB
C++
/*
|
|
SingletonSubclass(Test) - actually creating a subclass of the Singleton Type
|
|
|
|
Copyright (C) Lumiera.org
|
|
2008, Hermann Vosseler <Ichthyostega@web.de>
|
|
|
|
This program is free software; you can redistribute it and/or
|
|
modify it under the terms of the GNU General Public License as
|
|
published by the Free Software Foundation; either version 2 of
|
|
the License, or (at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program; if not, write to the Free Software
|
|
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
|
|
|
|
* *****************************************************/
|
|
|
|
|
|
#include "lib/test/run.hpp"
|
|
#include "lib/test/test-helper.hpp"
|
|
#include "lib/format-string.hpp"
|
|
#include "lib/util.hpp"
|
|
|
|
#include "testtargetobj.hpp"
|
|
#include "lib/singleton-subclass.hpp"
|
|
|
|
#include <boost/lexical_cast.hpp>
|
|
#include <iostream>
|
|
|
|
using boost::lexical_cast;
|
|
using util::_Fmt;
|
|
using util::isnil;
|
|
using std::string;
|
|
using std::cout;
|
|
|
|
|
|
namespace lib {
|
|
namespace test{
|
|
|
|
using lumiera::error::LUMIERA_ERROR_ASSERTION;
|
|
|
|
/**
|
|
* Target object to be instantiated as Singleton
|
|
* Allocates a variable amount of additional heap memory
|
|
* and prints diagnostic messages.
|
|
*/
|
|
class Interface : public TestTargetObj
|
|
{
|
|
public:
|
|
static int cnt;
|
|
static void setCountParam (uint c) { Interface::cnt = c; }
|
|
|
|
virtual string identify() { return "Interface"; }
|
|
|
|
protected:
|
|
Interface () : TestTargetObj(cnt) {}
|
|
virtual ~Interface() {}
|
|
|
|
friend class singleton::StaticCreate<Interface>;
|
|
friend class singleton::HeapCreate<Interface>;
|
|
};
|
|
|
|
int Interface::cnt = 0;
|
|
|
|
|
|
class Impl : public Interface
|
|
{
|
|
public:
|
|
virtual string identify() { return "Implementation"; }
|
|
};
|
|
|
|
|
|
// for checking the safety.....
|
|
class Impl_XXX : public Impl { };
|
|
class Unrelated { };
|
|
|
|
|
|
|
|
|
|
/*******************************************************************
|
|
* @test specialised variant of the Singleton Factory, for creating
|
|
* subclasses (implementation classes) without coupling the
|
|
* caller to the concrete class type.
|
|
* Expected results: an instance of the subclass is created.
|
|
* @see lib::Singleton
|
|
* @see lib::SingletonSubclassFactory
|
|
* @see lib::singleton::Adapter
|
|
*/
|
|
class SingletonSubclass_test : public Test
|
|
{
|
|
|
|
virtual void
|
|
run(Arg arg)
|
|
{
|
|
uint num= isnil(arg)? 1 : lexical_cast<uint>(arg[1]);
|
|
|
|
cout << _Fmt("using the Singleton should create TargetObj(%d)...\n") % num;
|
|
|
|
Interface::setCountParam(num);
|
|
|
|
// marker to declare the concrete type to be created
|
|
singleton::UseSubclass<Impl> typeinfo;
|
|
|
|
// define an instance of the Singleton factory,
|
|
// specialised to create the concrete Type passed in
|
|
SingletonSubclassFactory<Interface> instance (typeinfo);
|
|
|
|
// Now use the Singleton factory...
|
|
// Note: we get the Base type
|
|
Interface& t1 = instance();
|
|
Interface& t2 = instance();
|
|
|
|
CHECK ( &t1 == &t2, "not a Singleton, got two different instances." );
|
|
|
|
cout << "calling a non-static method on the Singleton-"
|
|
<< t1.identify() << "\n"
|
|
<< string (t1) << "\n";
|
|
|
|
///////////////////////////////////////////////////////////////////////////////TODO: find a way to configure NoBug to throw in case of assertion
|
|
///////////////////////////////////////////////////////////////////////////////TODO: just for the proc tests. Also find a better way to configure
|
|
///////////////////////////////////////////////////////////////////////////////TODO: the non-release check. Then re-enable these checks...
|
|
//#ifdef DEBUG
|
|
// verify_error_detection ();
|
|
//#endif
|
|
}
|
|
|
|
|
|
|
|
void
|
|
verify_error_detection ()
|
|
{
|
|
|
|
singleton::UseSubclass<Impl_XXX> more_special_type;
|
|
|
|
VERIFY_ERROR (ASSERTION, SingletonSubclassFactory<Interface> instance (more_special_type) );
|
|
/* in debug mode, an attempt to re-configure an already
|
|
* configured SingletonSubclassFactory with another type
|
|
* should be detected and spotted by assertion failure */
|
|
|
|
|
|
// Note: the following won't compile, because the "subclass" isn't a subclass...
|
|
//
|
|
// singleton::UseSubclass<Unrelated> yet_another_type;
|
|
// SingletonSubclassFactory<Interface> instance (yet_another_type);
|
|
}
|
|
};
|
|
|
|
|
|
|
|
/** Register this test class... */
|
|
LAUNCHER (SingletonSubclass_test, "unit common");
|
|
|
|
|
|
|
|
}} // namespace lib::test
|