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Diffstat (limited to 'src/boost/libs/msm/test/SimpleMachine.cpp')
| -rw-r--r-- | src/boost/libs/msm/test/SimpleMachine.cpp | 257 |
1 files changed, 257 insertions, 0 deletions
diff --git a/src/boost/libs/msm/test/SimpleMachine.cpp b/src/boost/libs/msm/test/SimpleMachine.cpp new file mode 100644 index 000000000..5f61ac7b8 --- /dev/null +++ b/src/boost/libs/msm/test/SimpleMachine.cpp @@ -0,0 +1,257 @@ +// Copyright 2010 Christophe Henry +// henry UNDERSCORE christophe AT hotmail DOT com +// This is an extended version of the state machine available in the boost::mpl library +// Distributed under the same license as the original. +// Copyright for the original version: +// Copyright 2005 David Abrahams and Aleksey Gurtovoy. 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) + +#include <iostream> +// back-end +#include <boost/msm/back/state_machine.hpp> +//front-end +#include <boost/msm/front/state_machine_def.hpp> +#ifndef BOOST_MSM_NONSTANDALONE_TEST +#define BOOST_TEST_MODULE MyTest +#endif +#include <boost/test/unit_test.hpp> + +namespace msm = boost::msm; +namespace mpl = boost::mpl; + +namespace +{ + // events + struct play {}; + struct end_pause {}; + struct stop {}; + struct pause {}; + struct open_close {}; + + // A "complicated" event type that carries some data. + enum DiskTypeEnum + { + DISK_CD=0, + DISK_DVD=1 + }; + struct cd_detected + { + cd_detected(std::string name, DiskTypeEnum diskType) + : name(name), + disc_type(diskType) + {} + + std::string name; + DiskTypeEnum disc_type; + }; + + // front-end: define the FSM structure + struct player_ : public msm::front::state_machine_def<player_> + { + unsigned int start_playback_counter; + unsigned int can_close_drawer_counter; + + player_(): + start_playback_counter(0), + can_close_drawer_counter(0) + {} + + // The list of FSM states + struct Empty : public msm::front::state<> + { + template <class Event,class FSM> + void on_entry(Event const&,FSM& ) {++entry_counter;} + template <class Event,class FSM> + void on_exit(Event const&,FSM& ) {++exit_counter;} + int entry_counter; + int exit_counter; + }; + struct Open : public msm::front::state<> + { + template <class Event,class FSM> + void on_entry(Event const&,FSM& ) {++entry_counter;} + template <class Event,class FSM> + void on_exit(Event const&,FSM& ) {++exit_counter;} + int entry_counter; + int exit_counter; + }; + + // sm_ptr still supported but deprecated as functors are a much better way to do the same thing + struct Stopped : public msm::front::state<> + { + template <class Event,class FSM> + void on_entry(Event const&,FSM& ) {++entry_counter;} + template <class Event,class FSM> + void on_exit(Event const&,FSM& ) {++exit_counter;} + int entry_counter; + int exit_counter; + }; + + struct Playing : public msm::front::state<> + { + template <class Event,class FSM> + void on_entry(Event const&,FSM& ) {++entry_counter;} + template <class Event,class FSM> + void on_exit(Event const&,FSM& ) {++exit_counter;} + int entry_counter; + int exit_counter; + }; + + // state not defining any entry or exit + struct Paused : public msm::front::state<> + { + template <class Event,class FSM> + void on_entry(Event const&,FSM& ) {++entry_counter;} + template <class Event,class FSM> + void on_exit(Event const&,FSM& ) {++exit_counter;} + int entry_counter; + int exit_counter; + }; + + // the initial state of the player SM. Must be defined + typedef Empty initial_state; + + // transition actions + void start_playback(play const&) {++start_playback_counter; } + void open_drawer(open_close const&) { } + void store_cd_info(cd_detected const&) { } + void stop_playback(stop const&) { } + void pause_playback(pause const&) { } + void resume_playback(end_pause const&) { } + void stop_and_open(open_close const&) { } + void stopped_again(stop const&){} + // guard conditions + bool good_disk_format(cd_detected const& evt) + { + // to test a guard condition, let's say we understand only CDs, not DVD + if (evt.disc_type != DISK_CD) + { + return false; + } + return true; + } + bool can_close_drawer(open_close const&) + { + ++can_close_drawer_counter; + return true; + } + + typedef player_ p; // makes transition table cleaner + + // Transition table for player + struct transition_table : mpl::vector< + // Start Event Next Action Guard + // +---------+-------------+---------+---------------------+----------------------+ + a_row < Stopped , play , Playing , &p::start_playback >, + a_row < Stopped , open_close , Open , &p::open_drawer >, + _row < Stopped , stop , Stopped >, + // +---------+-------------+---------+---------------------+----------------------+ + g_row < Open , open_close , Empty , &p::can_close_drawer >, + // +---------+-------------+---------+---------------------+----------------------+ + a_row < Empty , open_close , Open , &p::open_drawer >, + row < Empty , cd_detected , Stopped , &p::store_cd_info ,&p::good_disk_format >, + // +---------+-------------+---------+---------------------+----------------------+ + a_row < Playing , stop , Stopped , &p::stop_playback >, + a_row < Playing , pause , Paused , &p::pause_playback >, + a_row < Playing , open_close , Open , &p::stop_and_open >, + // +---------+-------------+---------+---------------------+----------------------+ + a_row < Paused , end_pause , Playing , &p::resume_playback >, + a_row < Paused , stop , Stopped , &p::stop_playback >, + a_row < Paused , open_close , Open , &p::stop_and_open > + // +---------+-------------+---------+---------------------+----------------------+ + > {}; + // Replaces the default no-transition response. + template <class FSM,class Event> + void no_transition(Event const& , FSM&,int) + { + BOOST_FAIL("no_transition called!"); + } + // init counters + template <class Event,class FSM> + void on_entry(Event const&,FSM& fsm) + { + fsm.template get_state<player_::Stopped&>().entry_counter=0; + fsm.template get_state<player_::Stopped&>().exit_counter=0; + fsm.template get_state<player_::Open&>().entry_counter=0; + fsm.template get_state<player_::Open&>().exit_counter=0; + fsm.template get_state<player_::Empty&>().entry_counter=0; + fsm.template get_state<player_::Empty&>().exit_counter=0; + fsm.template get_state<player_::Playing&>().entry_counter=0; + fsm.template get_state<player_::Playing&>().exit_counter=0; + fsm.template get_state<player_::Paused&>().entry_counter=0; + fsm.template get_state<player_::Paused&>().exit_counter=0; + } + + }; + // Pick a back-end + typedef msm::back::state_machine<player_> player; + +// static char const* const state_names[] = { "Stopped", "Open", "Empty", "Playing", "Paused" }; + + + BOOST_AUTO_TEST_CASE( my_test ) + { + player p; + + p.start(); + BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().entry_counter == 1,"Empty entry not called correctly"); + + p.process_event(open_close()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 1,"Open should be active"); //Open + BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().exit_counter == 1,"Empty exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().entry_counter == 1,"Open entry not called correctly"); + + p.process_event(open_close()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 2,"Empty should be active"); //Empty + BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().exit_counter == 1,"Open exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().entry_counter == 2,"Empty entry not called correctly"); + BOOST_CHECK_MESSAGE(p.can_close_drawer_counter == 1,"guard not called correctly"); + + p.process_event( + cd_detected("louie, louie",DISK_DVD)); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 2,"Empty should be active"); //Empty + BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().exit_counter == 1,"Open exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().entry_counter == 2,"Empty entry not called correctly"); + + p.process_event( + cd_detected("louie, louie",DISK_CD)); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped + BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().exit_counter == 2,"Empty exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 1,"Stopped entry not called correctly"); + + p.process_event(play()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing + BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 1,"Stopped exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 1,"Playing entry not called correctly"); + BOOST_CHECK_MESSAGE(p.start_playback_counter == 1,"action not called correctly"); + + p.process_event(pause()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Paused should be active"); //Paused + BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 1,"Playing exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().entry_counter == 1,"Paused entry not called correctly"); + + // go back to Playing + p.process_event(end_pause()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing + BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().exit_counter == 1,"Paused exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 2,"Playing entry not called correctly"); + + p.process_event(pause()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Paused should be active"); //Paused + BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 2,"Playing exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().entry_counter == 2,"Paused entry not called correctly"); + + p.process_event(stop()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped + BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().exit_counter == 2,"Paused exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 2,"Stopped entry not called correctly"); + + p.process_event(stop()); + BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped + BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 2,"Stopped exit not called correctly"); + BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly"); + } +} + |