Ichthyostega
2c20d407fc
- remove unnecessary includes - expunge all remaining usages of boost::format - able to leave out the expliti string(elm) in output - drop various operator<<, since we're now picking up custom string conversions automatically - delete diagnostics headers, which are now largely superfluous - use newer helper functions occasionally I didn't blindly change any usage of <iostream> though; sometimes, just using the output streams right away seems adequate.
122 lines
3.8 KiB
C++
122 lines
3.8 KiB
C++
/*
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MultiFactArgument(Test) - passing additional invocation arguments to registered factory functions
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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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#include "lib/test/run.hpp"
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#include "lib/test/test-helper.hpp"
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#include "lib/format-cout.hpp"
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#include "lib/multifact.hpp"
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#include <functional>
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namespace lib {
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namespace test{
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using std::bind;
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using std::function;
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using std::placeholders::_1;
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using lib::test::showSizeof;
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namespace { // dummy fabrication function, creating wrapped numbers, controlled by an additional argument
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enum prodID
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{ ONE = 1
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, TWO
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};
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struct Num { int n_; };
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/** dummy "factory" function to be invoked
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* @return pointer to heap allocated product object
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* @note this function needs to deliver the product in a form
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* which can be accepted by the concrete wrapper, which
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* is going to be configured into the factory.
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*/
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Num*
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fabricateNumberz (int base, int offset)
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{
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cout << "fabricate("<<base<<", "<<offset<<")" << endl;
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Num* product = new Num;
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product->n_ = base*offset;
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return product;
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}
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/** the factory instantiation used for this test */
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typedef factory::MultiFact< Num(int) // nominal signature of fabrication
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, prodID // select factory function by prodID
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, factory::BuildRefcountPtr // wrapper: manage product by smart-ptr
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> TestFactory;
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// for reference: type of an equivalent dispatcher table...
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typedef std::map<prodID, function<Num(int)> > DispatcherMap;
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}
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/***************************************************************//**
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* @test define a MultiFact (factory with dynamic registration),
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* which accepts additional arguments and passes them
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* through to the registered factory function(s).
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* @note we set up fabrication functions by binding the functions
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* in such a way as to match the function signature declared
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* in the factory; thereby one argument remains unclosed,
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* which is the argument to be supplied on each
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* factory invocation by the client code.
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*
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* @see lib::MultiFact
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* @see query-resolver.cpp
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*/
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class MultiFactArgument_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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TestFactory theFact;
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theFact.defineProduction (ONE, bind (&fabricateNumberz, 1, _1 ));
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theFact.defineProduction (TWO, bind (&fabricateNumberz, 2, _1 ));
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cout << showSizeof (theFact) << endl;
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CHECK (sizeof(theFact) == sizeof(DispatcherMap));
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typedef TestFactory::Product PP;
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PP p1 = theFact(ONE, 2);
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PP p2 = theFact(TWO, 3);
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CHECK (1*2 == p1->n_);
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CHECK (2*3 == p2->n_);
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}
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};
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/** Register this test class... */
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LAUNCHER (MultiFactArgument_test, "unit common");
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}} // namespace lib::test
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