test_coroutine.cpp

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/*
 * This program source code file is part of KiCad, a free EDA CAD application.
 *
 * Copyright (C) 2018 KiCad Developers, see AUTHORS.TXT for contributors.
 *
 * 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, you may find one here:
 * http://www.gnu.org/licenses/old-licenses/gpl-2.0.html
 * or you may search the http://www.gnu.org website for the version 2 license,
 * or you may write to the Free Software Foundation, Inc.,
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 */
 
#include <qa_utils/wx_utils/unit_test_utils.h>
 
#include <tool/coroutine.h>
 
#include <common.h>
 
 
struct COROUTINE_TEST_EVENT
{
 enum class TYPE
 {
 START,
 CALL,
 YIELD,
 RETURNED,
 END,
 };
 
 TYPE m_type;
 int m_value;
 
 bool operator==( const COROUTINE_TEST_EVENT& aOther ) const
 {
 return m_type == aOther.m_type && m_value == aOther.m_value;
 }
 
 bool operator!=( const COROUTINE_TEST_EVENT& aOther ) const
 {
 return !operator==( aOther );
 }
};
 
 
std::ostream& operator<<( std::ostream& os, const COROUTINE_TEST_EVENT& aObj )
{
 os << "COROUTINE_TEST_EVENT[ type: " << (int) aObj.m_type << ", value: " << aObj.m_value
 << " ]";
 return os;
}
 
 
class COROUTINE_INCREMENTING_HARNESS
{
public:
 using TEST_COROUTINE = COROUTINE<int, int>;
 
 using EVT_HANDLER = std::function<void( const COROUTINE_TEST_EVENT& )>;
 
 COROUTINE_INCREMENTING_HARNESS( EVT_HANDLER aHandler, int aCount )
 : m_handler( aHandler ), m_count( aCount )
 {
 }
 
 int CountTo( int n )
 {
 m_handler( { COROUTINE_TEST_EVENT::TYPE::START, 0 } );
 
 for( int i = 1; i <= n; i++ )
 {
 m_handler( { COROUTINE_TEST_EVENT::TYPE::YIELD, i } );
 m_cofunc->KiYield( i );
 }
 
 return 0;
 }
 
 void Run()
 {
 m_cofunc =
 std::make_unique<TEST_COROUTINE>( this, &COROUTINE_INCREMENTING_HARNESS::CountTo );
 m_handler( { COROUTINE_TEST_EVENT::TYPE::CALL, m_count } );
 m_cofunc->Call( m_count );
 
 int ret_val = 0;
 
 while( m_cofunc->Running() )
 {
 ret_val = m_cofunc->ReturnValue();
 m_handler( { COROUTINE_TEST_EVENT::TYPE::RETURNED, ret_val } );
 m_cofunc->Resume();
 }
 
 m_handler( { COROUTINE_TEST_EVENT::TYPE::END, ret_val } );
 }
 
 EVT_HANDLER m_handler;
 std::unique_ptr<TEST_COROUTINE> m_cofunc;
 int m_count;
};
 
BOOST_AUTO_TEST_SUITE( Coroutine )
 
 
 
BOOST_AUTO_TEST_CASE( Increment )
{
 const int count = 2;
 
 const std::vector<COROUTINE_TEST_EVENT> exp_events = {
 { COROUTINE_TEST_EVENT::TYPE::CALL, count },
 { COROUTINE_TEST_EVENT::TYPE::START, 0 },
 { COROUTINE_TEST_EVENT::TYPE::YIELD, 1 },
 { COROUTINE_TEST_EVENT::TYPE::RETURNED, 1 },
 { COROUTINE_TEST_EVENT::TYPE::YIELD, 2 },
 { COROUTINE_TEST_EVENT::TYPE::RETURNED, 2 },
 { COROUTINE_TEST_EVENT::TYPE::END, 2 },
 };
 
 std::vector<COROUTINE_TEST_EVENT> received_events;
 
 auto handler = [&]( const COROUTINE_TEST_EVENT& aEvent ) {
 received_events.push_back( aEvent );
 };
 
 COROUTINE_INCREMENTING_HARNESS harness( handler, count );
 
 harness.Run();
 
 BOOST_CHECK_EQUAL_COLLECTIONS(
 received_events.begin(), received_events.end(), exp_events.begin(), exp_events.end() );
}
 
BOOST_AUTO_TEST_SUITE_END()