91 lines
2.5 KiB
C++
91 lines
2.5 KiB
C++
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/*
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DuckDetector(Test) - detecting properties of a type at compile time
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Copyright (C) Lumiera.org
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2010, 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/meta/duck-detector.hpp"
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#include "lib/util.hpp" /////////////TODO
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#include <iostream>
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namespace lib {
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namespace meta{
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namespace test{
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//using std::string;
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using std::cout;
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using std::endl;
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namespace { // some test ducks....
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struct PropperGander
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{
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class Core;
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PropperGander& honk();
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};
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struct Propaganda
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{
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void honk();
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};
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#define DO_CHECK(_EXPR_) cout << STRINGIFY(_EXPR_) << "\t = " << _EXPR_::value << endl;
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}//(End) with test ducks
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/***********************************************************************************
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* @test verify building predicates to detect properties of a type at compile time.
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* Especially, this allows us to detect if a type in question
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* - has a nested type with a specific name
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* - has a member with a specific name
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* - defines a function with a specific signature
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*/
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class DuckDetector_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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DO_CHECK( DetectNested<PropperGander> );
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DO_CHECK( DetectNested<Propaganda> );
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DO_CHECK( DetectMember<PropperGander> );
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DO_CHECK( DetectMember<Propaganda> );
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DO_CHECK( DetectFunSig<PropperGander> );
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DO_CHECK( DetectFunSig<Propaganda> );
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UNIMPLEMENTED ("detect the propaganda");
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}
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};
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/** Register this test class... */
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LAUNCHER (DuckDetector_test, "unit common");
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}}} // namespace lib::meta::test
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