173 lines
5.3 KiB
C++
173 lines
5.3 KiB
C++
/*
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MementoClosure(Test) - check the mechanism for capturing and providing undo-state
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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 the
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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/test/test-helper.hpp"
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//#include "proc/asset/media.hpp"
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//#include "proc/mobject/session.hpp"
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//#include "proc/mobject/session/edl.hpp"
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//#include "proc/mobject/session/testclip.hpp"
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//#include "proc/mobject/test-dummy-mobject.hpp"
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//#include "lib/p.hpp"
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//#include "proc/mobject/placement.hpp"
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//#include "proc/mobject/placement-index.hpp"
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//#include "proc/mobject/explicitplacement.hpp"
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#include "proc/control/memento-closure.hpp"
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//#include "lib/meta/typelist.hpp"
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#include "lib/meta/tuple.hpp"
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//#include "lib/lumitime.hpp"
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//#include "lib/util.hpp"
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#include <tr1/functional>
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//#include <boost/format.hpp>
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#include <iostream>
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#include <cstdlib>
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#include <string>
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using std::tr1::bind;
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//using std::tr1::placeholders::_1;
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//using std::tr1::placeholders::_2;
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using std::tr1::function;
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//using boost::format;
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//using lumiera::Time;
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//using util::contains;
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using std::string;
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using std::rand;
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using std::cout;
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using std::endl;
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namespace control {
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namespace test {
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using lib::test::showSizeof;
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// using session::test::TestClip;
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// using lumiera::P;
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using namespace lumiera::typelist;
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using lumiera::typelist::Tuple;
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using control::CmdClosure;
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namespace { /////////////////TODO: use a more interesting function here.....
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int testVal=0; ///< used to verify the effect of testFunc
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void
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testFunc (int val)
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{
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testVal += val;
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}
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int
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capture ()
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{
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return testVal;
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}
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}
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/***************************************************************************
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* Verify the state capturing mechanism (memento), which is used
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* to implement the Undo() functionality for Proc-Layer commands
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*
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* @see control::Command
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* @see control::CmdClosure
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* @see control::UndoMutation
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* @see command-mutation-test.hpp
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*/
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class MementoClosure_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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checkStateCapturingClosure();
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}
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/** @test check the functionality used to implement UndoMutation:
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* bind an undo function and a state capturing function
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* and use the latter to define the special CmdClosure
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* with the ability hold the memento and bind it into
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* the relevant parameter of the undo function.
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* Verify that, after closing the functions, actually
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* state is captured by each invocation.
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*/
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void
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checkStateCapturingClosure ()
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{
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function<void(int)> undo_func = bind (&testFunc,_1);
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function<int(void)> cap_func = bind (&capture );
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MementoClosure memClo (cap_func);
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CmdFunctor closed_cap_func = memClo.bindArguments (cap_func);
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Tuple<Types<> > param;
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Closure<void()> clo (param);
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cout << "plain param values: " << clo << endl;
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Closure<void(int)> extendedClo = memClo.decorate (clo);
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cout << "params including memento storage: " << extendedClo << endl;
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CmdFunctor closed_undo_func = extendedClo.bindArguments (undo_func);
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VERIFY_ERROR (MISSING_MEMENTO, closed_undo_func() ); // invalid, because no state was captured
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int rr (rand() %100);
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testVal = rr;
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closed_cap_func(); // invoke state capturing
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cout << "params including memento: " << memClo << endl;
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cout << "captured memento state : " << extendedClo << endl;
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testVal = -10; // meanwhile "somehow" mutate the state
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closed_undo_func(); // invoking the undo() feeds back the memento
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ASSERT (rr == testVal); // which is then restored into the state
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// this cycle can be repeated with different state values
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rr = (rand() %100);
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testVal = rr;
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closed_cap_func(); // capture new state
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cout << "params including memento: " << memClo << endl;
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// ....note the changed memento!
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testVal = -20;
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closed_undo_func();
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ASSERT (rr == testVal);
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}
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};
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/** Register this test class... */
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LAUNCHER (MementoClosure_test, "unit controller");
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}} // namespace control::test
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