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fgmacedo avatar fgmacedo commented on May 23, 2024

@hwerbi , we've implemented a few checks built-in:

  • Are there states defined?
  • Are there transitions defined?
  • Is there one and only one initial state?
  • Is the statemachine graph a single component? (Is there any disconected sub-graph? Unheachable states?)

Other tests can be performed the same way, please see

python-statemachine/statemachine/statemachine.py

Lines 348 to 371 in cee0e83

def check(self):
if not self.states:
raise InvalidDefinition(_('There are no states.'))
if not self.transitions:
raise InvalidDefinition(_('There are no transitions.'))
initials = [s for s in self.states if s.initial]
if len(initials) != 1:
raise InvalidDefinition(_('There should be one and only one initial state. '
'Your currently have these: {!r}'.format(initials)))
self.initial_state = initials[0]
disconnected_states = self._disconnected_states(self.initial_state)
if (disconnected_states):
raise InvalidDefinition(_('There are unreachable states. '
'The statemachine graph should have a single component. '
'Disconnected states: [{}]'.format(disconnected_states)))
if self.current_state_value is None:
if self.start_value:
self.current_state_value = self.start_value
else:
self.current_state_value = self.initial_state.value

Let me know if I can help with something, feel free to reopen the issue.

from python-statemachine.

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