Add a bigger CD-player state-machine doctest(ed) example
Change-Id: I7d0c1d08b61f56b33289a0d774b89685416a3a70
This commit is contained in:
Joshua Harlow
Joshua Harlow
parent
7eeef3f354
commit
33d5fdaa5f
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@ -65,9 +65,9 @@ Transitioning a simple machine
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False
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-------------------------
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Running a complex machine
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-------------------------
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-------------------------------------
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Running a complex dog-barking machine
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-------------------------------------
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.. testcode::
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@ -129,3 +129,228 @@ Running a complex machine
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Entered 'wags tail'
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Leaving 'wags tail'
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Entered 'lies down'
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------------------------------------
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Creating a complex CD-player machine
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------------------------------------
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.. testcode::
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from automaton import machines
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def print_on_enter(new_state, triggered_event):
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print("Entered '%s' due to '%s'" % (new_state, triggered_event))
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def print_on_exit(old_state, triggered_event):
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print("Exiting '%s' due to '%s'" % (old_state, triggered_event))
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m = machines.FiniteMachine()
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m.add_state('stopped', on_enter=print_on_enter, on_exit=print_on_exit)
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m.add_state('opened', on_enter=print_on_enter, on_exit=print_on_exit)
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m.add_state('closed', on_enter=print_on_enter, on_exit=print_on_exit)
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m.add_state('playing', on_enter=print_on_enter, on_exit=print_on_exit)
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m.add_state('paused', on_enter=print_on_enter, on_exit=print_on_exit)
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m.add_transition('stopped', 'playing', 'play')
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m.add_transition('stopped', 'opened', 'open_close')
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m.add_transition('stopped', 'stopped', 'stop')
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m.add_transition('opened', 'closed', 'open_close')
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m.add_transition('closed', 'opened', 'open_close')
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m.add_transition('closed', 'stopped', 'cd_detected')
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m.add_transition('playing', 'stopped', 'stop')
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m.add_transition('playing', 'paused', 'pause')
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m.add_transition('playing', 'opened', 'open_close')
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m.add_transition('paused', 'playing', 'play')
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m.add_transition('paused', 'stopped', 'stop')
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m.add_transition('paused', 'opened', 'open_close')
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m.default_start_state = 'closed'
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m.initialize()
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print(m.pformat())
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for event in ['cd_detected', 'play', 'pause', 'play', 'stop',
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'open_close', 'open_close']:
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m.process_event(event)
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print(m.pformat())
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print("=============")
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print("Current state => %s" % m.current_state)
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print("=============")
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**Expected output:**
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.. testoutput::
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+------------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+------------+-------------+---------+----------------+---------------+
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| @closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| @closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+------------+-------------+---------+----------------+---------------+
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Exiting 'closed' due to 'cd_detected'
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Entered 'stopped' due to 'cd_detected'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| @stopped | open_close | opened | print_on_enter | print_on_exit |
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| @stopped | play | playing | print_on_enter | print_on_exit |
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| @stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => stopped
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=============
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Exiting 'stopped' due to 'play'
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Entered 'playing' due to 'play'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| @playing | open_close | opened | print_on_enter | print_on_exit |
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| @playing | pause | paused | print_on_enter | print_on_exit |
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| @playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => playing
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=============
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Exiting 'playing' due to 'pause'
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Entered 'paused' due to 'pause'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| @paused | open_close | opened | print_on_enter | print_on_exit |
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| @paused | play | playing | print_on_enter | print_on_exit |
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| @paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => paused
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=============
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Exiting 'paused' due to 'play'
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Entered 'playing' due to 'play'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| @playing | open_close | opened | print_on_enter | print_on_exit |
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| @playing | pause | paused | print_on_enter | print_on_exit |
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| @playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => playing
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=============
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Exiting 'playing' due to 'stop'
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Entered 'stopped' due to 'stop'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| @stopped | open_close | opened | print_on_enter | print_on_exit |
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| @stopped | play | playing | print_on_enter | print_on_exit |
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| @stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => stopped
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=============
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Exiting 'stopped' due to 'open_close'
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Entered 'opened' due to 'open_close'
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+-----------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+-----------+-------------+---------+----------------+---------------+
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| closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| @opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+-----------+-------------+---------+----------------+---------------+
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=============
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Current state => opened
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=============
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Exiting 'opened' due to 'open_close'
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Entered 'closed' due to 'open_close'
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+------------+-------------+---------+----------------+---------------+
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| Start | Event | End | On Enter | On Exit |
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+------------+-------------+---------+----------------+---------------+
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| @closed[^] | cd_detected | stopped | print_on_enter | print_on_exit |
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| @closed[^] | open_close | opened | print_on_enter | print_on_exit |
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| opened | open_close | closed | print_on_enter | print_on_exit |
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| paused | open_close | opened | print_on_enter | print_on_exit |
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| paused | play | playing | print_on_enter | print_on_exit |
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| paused | stop | stopped | print_on_enter | print_on_exit |
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| playing | open_close | opened | print_on_enter | print_on_exit |
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| playing | pause | paused | print_on_enter | print_on_exit |
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| playing | stop | stopped | print_on_enter | print_on_exit |
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| stopped | open_close | opened | print_on_enter | print_on_exit |
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| stopped | play | playing | print_on_enter | print_on_exit |
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| stopped | stop | stopped | print_on_enter | print_on_exit |
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+------------+-------------+---------+----------------+---------------+
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=============
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Current state => closed
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=============
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