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//  (C) Copyright Gennadiy Rozental 2005-2008.
//  Distributed under the Boost Software License, Version 1.0.
//  (See accompanying file LICENSE_1_0.txt or copy at
//  http://www.boost.org/LICENSE_1_0.txt)

//  See http://www.boost.org/libs/test for the library home page.
//
//  File        : $RCSfile$
//
//  Version     : $Revision: 57991 $
//
//  Description : implements framework API - main driver for the test
// ***************************************************************************

#ifndef BOOST_TEST_FRAMEWORK_IPP_021005GER
#define BOOST_TEST_FRAMEWORK_IPP_021005GER

// Boost.Test
#include <boost/test/framework.hpp>
#include <boost/test/execution_monitor.hpp>
#include <boost/test/debug.hpp>
#include <boost/test/unit_test_suite_impl.hpp>
#include <boost/test/unit_test_log.hpp>
#include <boost/test/unit_test_monitor.hpp>
#include <boost/test/test_observer.hpp>
#include <boost/test/results_collector.hpp>
#include <boost/test/progress_monitor.hpp>
#include <boost/test/results_reporter.hpp>
#include <boost/test/test_tools.hpp>

#include <boost/test/detail/unit_test_parameters.hpp>
#include <boost/test/detail/global_typedef.hpp>

#include <boost/test/utils/foreach.hpp>

// Boost
#include <boost/timer.hpp>

// STL
#include <map>
#include <set>
#include <cstdlib>
#include <ctime>

#ifdef BOOST_NO_STDC_NAMESPACE
namespace std { using ::time; using ::srand; }
#endif

#include <boost/test/detail/suppress_warnings.hpp>

//____________________________________________________________________________//

namespace boost {

namespace unit_test {

// ************************************************************************** //
// **************            test_start calls wrapper          ************** //
// ************************************************************************** //

namespace ut_detail {

struct test_start_caller {
    test_start_caller( test_observer* to, counter_t tc_amount )
    : m_to( to )
    , m_tc_amount( tc_amount )
    {}

    int operator()()
    {
        m_to->test_start( m_tc_amount );
        return 0;
    }

private:
    // Data members
    test_observer*  m_to;
    counter_t       m_tc_amount;
};

//____________________________________________________________________________//

struct test_init_caller {
    explicit    test_init_caller( init_unit_test_func init_func ) 
    : m_init_func( init_func )
    {}
    int         operator()()
    {
#ifdef BOOST_TEST_ALTERNATIVE_INIT_API
        if( !(*m_init_func)() )
            throw std::runtime_error( "test module initialization failed" );
#else
        test_suite*  manual_test_units = (*m_init_func)( framework::master_test_suite().argc, framework::master_test_suite().argv );

        if( manual_test_units )
            framework::master_test_suite().add( manual_test_units );
#endif
        return 0;
    }

    // Data members
    init_unit_test_func m_init_func;
};

}

// ************************************************************************** //
// **************                   framework                  ************** //
// ************************************************************************** //

class framework_impl : public test_tree_visitor {
public:
    framework_impl()
    : m_master_test_suite( 0 )
    , m_curr_test_case( INV_TEST_UNIT_ID )
    , m_next_test_case_id( MIN_TEST_CASE_ID )
    , m_next_test_suite_id( MIN_TEST_SUITE_ID )
    , m_is_initialized( false )
    , m_test_in_progress( false )
    {}

    ~framework_impl() { clear(); }

    void            clear()
    {
        while( !m_test_units.empty() ) {
            test_unit_store::value_type const& tu     = *m_test_units.begin();
            test_unit*                         tu_ptr = tu.second;

            // the delete will erase this element from map
            if( ut_detail::test_id_2_unit_type( tu.second->p_id ) == tut_suite )
                delete  (test_suite const*)tu_ptr;
            else
                delete  (test_case const*)tu_ptr;
        }
    }

    void            set_tu_id( test_unit& tu, test_unit_id id ) { tu.p_id.value = id; }

    // test_tree_visitor interface implementation
    void            visit( test_case const& tc )
    {
        if( !tc.check_dependencies() ) {
            BOOST_TEST_FOREACH( test_observer*, to, m_observers )
                to->test_unit_skipped( tc );

            return;
        }

        BOOST_TEST_FOREACH( test_observer*, to, m_observers )
            to->test_unit_start( tc );

        boost::timer tc_timer;
        test_unit_id bkup = m_curr_test_case;
        m_curr_test_case = tc.p_id;
        unit_test_monitor_t::error_level run_result = unit_test_monitor.execute_and_translate( tc );

        unsigned long elapsed = static_cast<unsigned long>( tc_timer.elapsed() * 1e6 );

        if( unit_test_monitor.is_critical_error( run_result ) ) {
            BOOST_TEST_FOREACH( test_observer*, to, m_observers )
                to->test_aborted();
        }

        BOOST_TEST_FOREACH( test_observer*, to, m_observers )
            to->test_unit_finish( tc, elapsed );

        m_curr_test_case = bkup;

        if( unit_test_monitor.is_critical_error( run_result ) )
            throw test_being_aborted();
    }

    bool            test_suite_start( test_suite const& ts )
    {
        if( !ts.check_dependencies() ) {
            BOOST_TEST_FOREACH( test_observer*, to, m_observers )
                to->test_unit_skipped( ts );

            return false;
        }

        BOOST_TEST_FOREACH( test_observer*, to, m_observers )
            to->test_unit_start( ts );

        return true;
    }

    void            test_suite_finish( test_suite const& ts )
    {
        BOOST_TEST_FOREACH( test_observer*, to, m_observers )
            to->test_unit_finish( ts, 0 );
    }

    //////////////////////////////////////////////////////////////////
    struct priority_order {
        bool operator()( test_observer* lhs, test_observer* rhs ) const
        {
            return (lhs->priority() < rhs->priority()) || ((lhs->priority() == rhs->priority()) && (lhs < rhs));
        }
    };

    typedef std::map<test_unit_id,test_unit*>       test_unit_store;
    typedef std::set<test_observer*,priority_order> observer_store;

    master_test_suite_t* m_master_test_suite;
    test_unit_id    m_curr_test_case;
    test_unit_store m_test_units;

    test_unit_id    m_next_test_case_id;
    test_unit_id    m_next_test_suite_id;

    bool            m_is_initialized;
    bool            m_test_in_progress;

    observer_store  m_observers;
};