1// Copyright 2010 Christophe Henry
2// henry UNDERSCORE christophe AT hotmail DOT com
3// This is an extended version of the state machine available in the boost::mpl library
4// Distributed under the same license as the original.
5// Copyright for the original version:
6// Copyright 2005 David Abrahams and Aleksey Gurtovoy. Distributed
7// under the Boost Software License, Version 1.0. (See accompanying
8// file LICENSE_1_0.txt or copy at
9// http://www.boost.org/LICENSE_1_0.txt)
10
11// back-end
12#include <boost/msm/back/state_machine.hpp>
13//front-end
14#include <boost/msm/front/state_machine_def.hpp>
15#ifndef BOOST_MSM_NONSTANDALONE_TEST
16#define BOOST_TEST_MODULE MyTest
17#endif
18#include <boost/test/unit_test.hpp>
19
20namespace msm = boost::msm;
21namespace mpl = boost::mpl;
22
23namespace
24{
25 // events
26 struct play {};
27 struct end_pause {};
28 struct stop {};
29 struct pause {};
30 struct open_close {};
31 struct NextSong {};
32 struct PreviousSong {};
33 struct error_found {};
34 struct end_error {};
35 struct do_terminate {};
36
37 // Flags. Allow information about a property of the current state
38 struct PlayingPaused{};
39 struct CDLoaded {};
40 struct FirstSongPlaying {};
41
42 // A "complicated" event type that carries some data.
43 struct cd_detected
44 {
45 cd_detected(std::string name)
46 : name(name)
47 {}
48
49 std::string name;
50 };
51
52 // front-end: define the FSM structure
53 struct player_ : public msm::front::state_machine_def<player_>
54 {
55 unsigned int start_playback_counter;
56 unsigned int can_close_drawer_counter;
57 unsigned int report_error_counter;
58 unsigned int report_end_error_counter;
59
60 player_():
61 start_playback_counter(0),
62 can_close_drawer_counter(0),
63 report_error_counter(0),
64 report_end_error_counter(0)
65 {}
66 // The list of FSM states
67 struct Empty : public msm::front::state<>
68 {
69 typedef mpl::vector<play> deferred_events;
70 template <class Event,class FSM>
71 void on_entry(Event const&,FSM& ) {++entry_counter;}
72 template <class Event,class FSM>
73 void on_exit(Event const&,FSM& ) {++exit_counter;}
74 int entry_counter;
75 int exit_counter;
76 };
77 struct Open : public msm::front::state<>
78 {
79 typedef mpl::vector<play> deferred_events;
80 typedef mpl::vector1<CDLoaded> flag_list;
81
82 template <class Event,class FSM>
83 void on_entry(Event const&,FSM& ) {++entry_counter;}
84 template <class Event,class FSM>
85 void on_exit(Event const&,FSM& ) {++exit_counter;}
86 int entry_counter;
87 int exit_counter;
88 };
89
90 struct Stopped : public msm::front::state<>
91 {
92 typedef mpl::vector1<CDLoaded> flag_list;
93
94 template <class Event,class FSM>
95 void on_entry(Event const&,FSM& ) {++entry_counter;}
96 template <class Event,class FSM>
97 void on_exit(Event const&,FSM& ) {++exit_counter;}
98 int entry_counter;
99 int exit_counter;
100 };
101
102 // the player state machine contains a state which is himself a state machine
103 // as you see, no need to declare it anywhere so Playing can be developed separately
104 // by another team in another module. For simplicity I just declare it inside player
105 struct Playing_ : public msm::front::state_machine_def<Playing_>
106 {
107 // when playing, the CD is loaded and we are in either pause or playing (duh)
108 typedef mpl::vector2<PlayingPaused,CDLoaded> flag_list;
109
110 template <class Event,class FSM>
111 void on_entry(Event const&,FSM& ) {++entry_counter;}
112 template <class Event,class FSM>
113 void on_exit(Event const&,FSM& ) {++exit_counter;}
114 int entry_counter;
115 int exit_counter;
116 unsigned int start_next_song_counter;
117 unsigned int start_prev_song_guard_counter;
118
119 Playing_():
120 start_next_song_counter(0),
121 start_prev_song_guard_counter(0)
122 {}
123
124 // The list of FSM states
125 struct Song1 : public msm::front::state<>
126 {
127 typedef mpl::vector1<FirstSongPlaying> flag_list;
128
129 template <class Event,class FSM>
130 void on_entry(Event const&,FSM& ) {++entry_counter;}
131 template <class Event,class FSM>
132 void on_exit(Event const&,FSM& ) {++exit_counter;}
133 int entry_counter;
134 int exit_counter;
135 };
136 struct Song2 : public msm::front::state<>
137 {
138 template <class Event,class FSM>
139 void on_entry(Event const&,FSM& ) {++entry_counter;}
140 template <class Event,class FSM>
141 void on_exit(Event const&,FSM& ) {++exit_counter;}
142 int entry_counter;
143 int exit_counter;
144 };
145 struct Song3 : public msm::front::state<>
146 {
147 template <class Event,class FSM>
148 void on_entry(Event const&,FSM& ) {++entry_counter;}
149 template <class Event,class FSM>
150 void on_exit(Event const&,FSM& ) {++exit_counter;}
151 int entry_counter;
152 int exit_counter;
153 };
154 // the initial state. Must be defined
155 typedef Song1 initial_state;
156 // transition actions
157 void start_next_song(NextSong const&) {++start_next_song_counter; }
158 void start_prev_song(PreviousSong const&) { }
159 // guard conditions
160 bool start_prev_song_guard(PreviousSong const&) {++start_prev_song_guard_counter;return true; }
161
162 typedef Playing_ pl; // makes transition table cleaner
163 // Transition table for Playing
164 struct transition_table : mpl::vector4<
165 // Start Event Next Action Guard
166 // +---------+-------------+---------+---------------------+----------------------+
167 _row < Song1 , NextSong , Song2 >,
168 row < Song2 , PreviousSong, Song1 , &pl::start_prev_song,&pl::start_prev_song_guard>,
169 a_row < Song2 , NextSong , Song3 , &pl::start_next_song >,
170 g_row < Song3 , PreviousSong, Song2 ,&pl::start_prev_song_guard>
171 // +---------+-------------+---------+---------------------+----------------------+
172 > {};
173 // Replaces the default no-transition response.
174 template <class FSM,class Event>
175 void no_transition(Event const&, FSM&,int)
176 {
177 BOOST_FAIL("no_transition called!");
178 }
179 };
180 // back-end
181 typedef msm::back::state_machine<Playing_> Playing;
182
183 // state not defining any entry or exit
184 struct Paused : public msm::front::state<>
185 {
186 typedef mpl::vector2<PlayingPaused,CDLoaded> flag_list;
187
188 template <class Event,class FSM>
189 void on_entry(Event const&,FSM& ) {++entry_counter;}
190 template <class Event,class FSM>
191 void on_exit(Event const&,FSM& ) {++exit_counter;}
192 int entry_counter;
193 int exit_counter;
194 };
195 struct AllOk : public msm::front::state<>
196 {
197 template <class Event,class FSM>
198 void on_entry(Event const&,FSM& ) {++entry_counter;}
199 template <class Event,class FSM>
200 void on_exit(Event const&,FSM& ) {++exit_counter;}
201 int entry_counter;
202 int exit_counter;
203 };
204 // this state is also made terminal so that all the events are blocked
205 struct ErrorMode : //public msm::front::terminate_state<> // ErrorMode terminates the state machine
206 public msm::front::interrupt_state<end_error> // ErroMode just interrupts. Will resume if
207 // the event end_error is generated
208 {
209 template <class Event,class FSM>
210 void on_entry(Event const&,FSM& ) {++entry_counter;}
211 template <class Event,class FSM>
212 void on_exit(Event const&,FSM& ) {++exit_counter;}
213 int entry_counter;
214 int exit_counter;
215 };
216 struct ErrorTerminate : public msm::front::terminate_state<> // terminates the state machine
217 {
218 template <class Event,class FSM>
219 void on_entry(Event const&,FSM& ) {++entry_counter;}
220 template <class Event,class FSM>
221 void on_exit(Event const&,FSM& ) {++exit_counter;}
222 int entry_counter;
223 int exit_counter;
224 };
225 // the initial state of the player SM. Must be defined
226 typedef mpl::vector<Empty,AllOk> initial_state;
227
228 // transition actions
229 void start_playback(play const&) {++start_playback_counter; }
230 void open_drawer(open_close const&) { }
231 void store_cd_info(cd_detected const&) { }
232 void stop_playback(stop const&) { }
233 void pause_playback(pause const&) { }
234 void resume_playback(end_pause const&) { }
235 void stop_and_open(open_close const&) { }
236 void stopped_again(stop const&){}
237 void report_error(error_found const&) {++report_error_counter;}
238 void report_end_error(end_error const&) {++report_end_error_counter;}
239
240 //guards
241 bool can_close_drawer(open_close const&)
242 {
243 ++can_close_drawer_counter;
244 return true;
245 }
246 typedef player_ p; // makes transition table cleaner
247
248 // Transition table for player
249 struct transition_table : mpl::vector<
250 // Start Event Next Action Guard
251 // +---------+-------------+---------+---------------------+----------------------+
252 a_row < Stopped , play , Playing , &p::start_playback >,
253 a_row < Stopped , open_close , Open , &p::open_drawer >,
254 _row < Stopped , stop , Stopped >,
255 // +---------+-------------+---------+---------------------+----------------------+
256 g_row < Open , open_close , Empty , &p::can_close_drawer >,
257 // +---------+-------------+---------+---------------------+----------------------+
258 a_row < Empty , open_close , Open , &p::open_drawer >,
259 a_row < Empty , cd_detected , Stopped , &p::store_cd_info >,
260 // +---------+-------------+---------+---------------------+----------------------+
261 a_row < Playing , stop , Stopped , &p::stop_playback >,
262 a_row < Playing , pause , Paused , &p::pause_playback >,
263 a_row < Playing , open_close , Open , &p::stop_and_open >,
264 // +---------+-------------+---------+---------------------+----------------------+
265 a_row < Paused , end_pause , Playing , &p::resume_playback >,
266 a_row < Paused , stop , Stopped , &p::stop_playback >,
267 a_row < Paused , open_close , Open , &p::stop_and_open >,
268 // +---------+-------------+---------+---------------------+----------------------+
269 a_row < AllOk , error_found ,ErrorMode, &p::report_error >,
270 a_row <ErrorMode, end_error ,AllOk , &p::report_end_error >,
271 _row < AllOk , do_terminate,ErrorTerminate >
272 // +---------+-------------+---------+---------------------+----------------------+
273 > {};
274
275 // Replaces the default no-transition response.
276 template <class FSM,class Event>
277 void no_transition(Event const& , FSM&,int )
278 {
279 BOOST_FAIL("no_transition called!");
280 }
281 // init counters
282 template <class Event,class FSM>
283 void on_entry(Event const&,FSM& fsm)
284 {
285 fsm.template get_state<player_::Stopped&>().entry_counter=0;
286 fsm.template get_state<player_::Stopped&>().exit_counter=0;
287 fsm.template get_state<player_::Open&>().entry_counter=0;
288 fsm.template get_state<player_::Open&>().exit_counter=0;
289 fsm.template get_state<player_::Empty&>().entry_counter=0;
290 fsm.template get_state<player_::Empty&>().exit_counter=0;
291 fsm.template get_state<player_::Playing&>().entry_counter=0;
292 fsm.template get_state<player_::Playing&>().exit_counter=0;
293 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song1&>().entry_counter=0;
294 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song1&>().exit_counter=0;
295 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song2&>().entry_counter=0;
296 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song2&>().exit_counter=0;
297 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song3&>().entry_counter=0;
298 fsm.template get_state<player_::Playing&>().template get_state<player_::Playing::Song3&>().exit_counter=0;
299 fsm.template get_state<player_::Paused&>().entry_counter=0;
300 fsm.template get_state<player_::Paused&>().exit_counter=0;
301 fsm.template get_state<player_::AllOk&>().entry_counter=0;
302 fsm.template get_state<player_::AllOk&>().exit_counter=0;
303 fsm.template get_state<player_::ErrorMode&>().entry_counter=0;
304 fsm.template get_state<player_::ErrorMode&>().exit_counter=0;
305 fsm.template get_state<player_::ErrorTerminate&>().entry_counter=0;
306 fsm.template get_state<player_::ErrorTerminate&>().exit_counter=0;
307 }
308 };
309 // Pick a back-end
310 typedef msm::back::state_machine<player_> player;
311
312 //static char const* const state_names[] = { "Stopped", "Open", "Empty", "Playing", "Paused","AllOk","ErrorMode" };
313
314 BOOST_AUTO_TEST_CASE( my_test )
315 {
316 player p;
317 // needed to start the highest-level SM. This will call on_entry and mark the start of the SM
318 p.start();
319 // test deferred event
320 // deferred in Empty and Open, will be handled only after event cd_detected
321 p.process_event(evt: play());
322 BOOST_CHECK_MESSAGE(p.current_state()[0] == 2,"Empty should be active"); //Empty
323 BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().exit_counter == 0,"Open exit not called correctly");
324 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 0,"Playing entry not called correctly");
325 BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().entry_counter == 1,"Empty entry not called correctly");
326 //flags
327 BOOST_CHECK_MESSAGE(p.is_flag_active<CDLoaded>() == false,"CDLoaded should not be active");
328
329 p.process_event(evt: open_close());
330 BOOST_CHECK_MESSAGE(p.current_state()[0] == 1,"Open should be active"); //Open
331 BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().exit_counter == 1,"Empty exit not called correctly");
332 BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().entry_counter == 1,"Open entry not called correctly");
333
334 p.process_event(evt: open_close());
335 BOOST_CHECK_MESSAGE(p.current_state()[0] == 2,"Empty should be active"); //Empty
336 BOOST_CHECK_MESSAGE(p.get_state<player_::Open&>().exit_counter == 1,"Open exit not called correctly");
337 BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().entry_counter == 2,"Empty entry not called correctly");
338 BOOST_CHECK_MESSAGE(p.can_close_drawer_counter == 1,"guard not called correctly");
339
340 //deferred event should have been processed
341 p.process_event(evt: cd_detected("louie, louie"));
342 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
343 BOOST_CHECK_MESSAGE(p.get_state<player_::Empty&>().exit_counter == 2,"Empty exit not called correctly");
344 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 1,"Stopped entry not called correctly");
345 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 1,"Stopped exit not called correctly");
346 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 1,"Playing entry not called correctly");
347 BOOST_CHECK_MESSAGE(p.start_playback_counter == 1,"action not called correctly");
348 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().current_state()[0] == 0,"Song1 should be active");
349 BOOST_CHECK_MESSAGE(
350 p.get_state<player_::Playing&>().get_state<player_::Playing::Song1&>().entry_counter == 1,
351 "Song1 entry not called correctly");
352
353 //flags
354 BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true,"PlayingPaused should be active");
355 BOOST_CHECK_MESSAGE(p.is_flag_active<FirstSongPlaying>() == true,"FirstSongPlaying should be active");
356
357
358 p.process_event(evt: NextSong());
359 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
360 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().current_state()[0] == 1,"Song2 should be active");
361 BOOST_CHECK_MESSAGE(
362 p.get_state<player_::Playing&>().get_state<player_::Playing::Song2&>().entry_counter == 1,
363 "Song2 entry not called correctly");
364 BOOST_CHECK_MESSAGE(
365 p.get_state<player_::Playing&>().get_state<player_::Playing::Song1&>().exit_counter == 1,
366 "Song1 exit not called correctly");
367 BOOST_CHECK_MESSAGE(
368 p.get_state<player_::Playing&>().start_next_song_counter == 0,
369 "submachine action not called correctly");
370
371 p.process_event(evt: NextSong());
372 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
373 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().current_state()[0] == 2,"Song3 should be active");
374 BOOST_CHECK_MESSAGE(
375 p.get_state<player_::Playing&>().get_state<player_::Playing::Song3&>().entry_counter == 1,
376 "Song3 entry not called correctly");
377 BOOST_CHECK_MESSAGE(
378 p.get_state<player_::Playing&>().get_state<player_::Playing::Song2&>().exit_counter == 1,
379 "Song2 exit not called correctly");
380 BOOST_CHECK_MESSAGE(
381 p.get_state<player_::Playing&>().start_next_song_counter == 1,
382 "submachine action not called correctly");
383
384 p.process_event(evt: PreviousSong());
385 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
386 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().current_state()[0] == 1,"Song2 should be active");
387 BOOST_CHECK_MESSAGE(
388 p.get_state<player_::Playing&>().get_state<player_::Playing::Song2&>().entry_counter == 2,
389 "Song2 entry not called correctly");
390 BOOST_CHECK_MESSAGE(
391 p.get_state<player_::Playing&>().get_state<player_::Playing::Song3&>().exit_counter == 1,
392 "Song3 exit not called correctly");
393 BOOST_CHECK_MESSAGE(
394 p.get_state<player_::Playing&>().start_prev_song_guard_counter == 1,
395 "submachine guard not called correctly");
396 //flags
397 BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true,"PlayingPaused should be active");
398 BOOST_CHECK_MESSAGE(p.is_flag_active<FirstSongPlaying>() == false,"FirstSongPlaying should not be active");
399
400 p.process_event(evt: pause());
401 BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Paused should be active"); //Paused
402 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 1,"Playing exit not called correctly");
403 BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().entry_counter == 1,"Paused entry not called correctly");
404 //flags
405 BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == true,"PlayingPaused should be active");
406
407 // go back to Playing
408 p.process_event(evt: end_pause());
409 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
410 BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().exit_counter == 1,"Paused exit not called correctly");
411 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 2,"Playing entry not called correctly");
412
413 p.process_event(evt: pause());
414 BOOST_CHECK_MESSAGE(p.current_state()[0] == 4,"Paused should be active"); //Paused
415 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 2,"Playing exit not called correctly");
416 BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().entry_counter == 2,"Paused entry not called correctly");
417
418 p.process_event(evt: stop());
419 BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped
420 BOOST_CHECK_MESSAGE(p.get_state<player_::Paused&>().exit_counter == 2,"Paused exit not called correctly");
421 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 2,"Stopped entry not called correctly");
422 //flags
423 BOOST_CHECK_MESSAGE(p.is_flag_active<PlayingPaused>() == false,"PlayingPaused should not be active");
424 BOOST_CHECK_MESSAGE(p.is_flag_active<CDLoaded>() == true,"CDLoaded should be active");
425 //BOOST_CHECK_MESSAGE(p.is_flag_active<CDLoaded,player::Flag_AND>() == false,"CDLoaded with AND should not be active");
426
427 p.process_event(evt: stop());
428 BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped
429 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 2,"Stopped exit not called correctly");
430 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly");
431
432 //test interrupt
433 BOOST_CHECK_MESSAGE(p.current_state()[1] == 5,"AllOk should be active"); //AllOk
434 p.process_event(evt: error_found());
435 BOOST_CHECK_MESSAGE(p.current_state()[1] == 6,"ErrorMode should be active"); //ErrorMode
436 BOOST_CHECK_MESSAGE(p.get_state<player_::AllOk&>().exit_counter == 1,"AllOk exit not called correctly");
437 BOOST_CHECK_MESSAGE(p.get_state<player_::ErrorMode&>().entry_counter == 1,"ErrorMode entry not called correctly");
438
439 // try generating more events
440 p.process_event(evt: play());
441 BOOST_CHECK_MESSAGE(p.current_state()[1] == 6,"ErrorMode should be active"); //ErrorMode
442 BOOST_CHECK_MESSAGE(p.get_state<player_::AllOk&>().exit_counter == 1,"AllOk exit not called correctly");
443 BOOST_CHECK_MESSAGE(p.get_state<player_::ErrorMode&>().entry_counter == 1,"ErrorMode entry not called correctly");
444 BOOST_CHECK_MESSAGE(p.current_state()[0] == 0,"Stopped should be active"); //Stopped
445 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 2,"Stopped exit not called correctly");
446 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly");
447
448 p.process_event(evt: end_error());
449 BOOST_CHECK_MESSAGE(p.current_state()[1] == 5,"AllOk should be active"); //AllOk
450 BOOST_CHECK_MESSAGE(p.get_state<player_::ErrorMode&>().exit_counter == 1,"ErrorMode exit not called correctly");
451 BOOST_CHECK_MESSAGE(p.get_state<player_::AllOk&>().entry_counter == 2,"AllOk entry not called correctly");
452
453 p.process_event(evt: play());
454 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
455 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().exit_counter == 3,"Stopped exit not called correctly");
456 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().entry_counter == 3,"Playing entry not called correctly");
457
458 //test terminate
459 BOOST_CHECK_MESSAGE(p.current_state()[1] == 5,"AllOk should be active"); //AllOk
460 p.process_event(evt: do_terminate());
461 BOOST_CHECK_MESSAGE(p.current_state()[1] == 7,"ErrorTerminate should be active"); //ErrorTerminate
462 BOOST_CHECK_MESSAGE(p.get_state<player_::AllOk&>().exit_counter == 2,"AllOk exit not called correctly");
463 BOOST_CHECK_MESSAGE(p.get_state<player_::ErrorTerminate&>().entry_counter == 1,"ErrorTerminate entry not called correctly");
464
465 // try generating more events
466 p.process_event(evt: stop());
467 BOOST_CHECK_MESSAGE(p.current_state()[1] == 7,"ErrorTerminate should be active"); //ErrorTerminate
468 BOOST_CHECK_MESSAGE(p.get_state<player_::ErrorTerminate&>().exit_counter == 0,"ErrorTerminate exit not called correctly");
469 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
470 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 2,"Playing exit not called correctly");
471 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly");
472
473 p.process_event(evt: end_error());
474 BOOST_CHECK_MESSAGE(p.current_state()[1] == 7,"ErrorTerminate should be active"); //ErrorTerminate
475 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
476 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 2,"Playing exit not called correctly");
477 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly");
478
479 p.process_event(evt: stop());
480 BOOST_CHECK_MESSAGE(p.current_state()[1] == 7,"ErrorTerminate should be active"); //ErrorTerminate
481 BOOST_CHECK_MESSAGE(p.current_state()[0] == 3,"Playing should be active"); //Playing
482 BOOST_CHECK_MESSAGE(p.get_state<player_::Playing&>().exit_counter == 2,"Playing exit not called correctly");
483 BOOST_CHECK_MESSAGE(p.get_state<player_::Stopped&>().entry_counter == 3,"Stopped entry not called correctly");
484
485 }
486}
487
488

source code of boost/libs/msm/test/OrthogonalDeferred.cpp