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.
144 lines
3.9 KiB
C++
144 lines
3.9 KiB
C++
/*
|
||
SingletonSubclass(Test) - actually creating a subclass of the Singleton Type
|
||
|
||
Copyright (C)
|
||
2008, Hermann Vosseler <Ichthyostega@web.de>
|
||
|
||
**Lumiera** 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. See the file COPYING for further details.
|
||
|
||
* *****************************************************************/
|
||
|
||
/** @file singleton-subclass-test.cpp
|
||
** unit test \ref SingletonSubclass_test
|
||
*/
|
||
|
||
|
||
#include "lib/test/run.hpp"
|
||
#include "lib/test/test-helper.hpp"
|
||
#include "lib/format-string.hpp"
|
||
#include "lib/format-cout.hpp"
|
||
#include "lib/util.hpp"
|
||
|
||
#include "test-target-obj.hpp"
|
||
#include "lib/depend.hpp"
|
||
#include "lib/depend-inject.hpp"
|
||
|
||
#include <boost/lexical_cast.hpp>
|
||
|
||
using boost::lexical_cast;
|
||
using util::isSameObject;
|
||
using util::_Fmt;
|
||
using util::isnil;
|
||
using std::string;
|
||
|
||
|
||
namespace lib {
|
||
namespace test{
|
||
|
||
using LERR_(LIFECYCLE);
|
||
|
||
|
||
/**
|
||
* 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 lib::DependencyFactory<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 specific dependency-injection setup, to create a singleton
|
||
* subclass (implementation class) instance, without coupling
|
||
* the caller to the concrete type.
|
||
* @remark Expected results: an instance of the subclass is created.
|
||
* @see lib::Depend
|
||
* @see lib/depend-inject.hpp
|
||
*/
|
||
class SingletonSubclass_test : public Test
|
||
{
|
||
|
||
virtual void
|
||
run(Arg arg)
|
||
{
|
||
uint num{firstVal (arg)};
|
||
cout << _Fmt("using the Singleton should create TargetObj(%d)...\n") % num;
|
||
|
||
Interface::setCountParam(num);
|
||
|
||
// configuration to use the subclass on demand
|
||
DependInject<Interface>::useSingleton<Impl>();
|
||
|
||
// define an instance of the Singleton factory as always...
|
||
Depend<Interface> instance;
|
||
|
||
// Now use the Singleton factory...
|
||
// Note: we get the Base type
|
||
Interface& t1 = instance();
|
||
Interface& t2 = instance();
|
||
|
||
CHECK (isSameObject (t1, t2), "not a Singleton, got two different instances." );
|
||
CHECK ( INSTANCEOF (Impl,&t1)); // got the subclass as expected
|
||
CHECK ("Implementation" == t2.identify());
|
||
|
||
cout << "calling a non-static method on the Singleton-"
|
||
<< t1.identify() << endl
|
||
<< t1 << endl;
|
||
|
||
verify_error_detection ();
|
||
}
|
||
|
||
|
||
|
||
void
|
||
verify_error_detection ()
|
||
{
|
||
VERIFY_ERROR (LIFECYCLE, DependInject<Interface>::useSingleton<Impl_XXX>() );
|
||
|
||
Depend<Interface> newFactory;
|
||
CHECK ( INSTANCEOF (Impl, &newFactory() )); // works as before
|
||
|
||
//////////does not compile due to incompatible baseclass
|
||
// DependInject<Interface>::useSingleton<Unrelated>();
|
||
}
|
||
};
|
||
|
||
|
||
|
||
/** Register this test class... */
|
||
LAUNCHER (SingletonSubclass_test, "unit common");
|
||
|
||
|
||
|
||
}} // namespace lib::test
|