def test_state_transition_builder_calling_build_returns_transitions(
self, trigger_transition_factory, test_context):
builder = StateTransitionBuilder(trigger_transition_factory)
builder.append = test_context.append
builder.append.return_value = builder
expected_transitions = {
(
test_context.from_state,
test_context.trigger_state,
): (test_context.transition_action, test_context.transition_guard,
test_context.transition_state),
(test_context.from_state, test_context.trigger_state, test_context.trigger_parameter1):
(test_context.transition_action2, test_context.transition_guard2,
test_context.transition_state2),
(test_context.from_state, test_context.trigger_state, test_context.trigger_parameter2):
(test_context.transition_action3, test_context.transition_guard3,
test_context.transition_state3)
}
builder._transitions = expected_transitions
actual_transitions = builder.build()
builder.append.assert_called_once()
self.assertEqual(actual_transitions, expected_transitions)
assert actual_transitions is not expected_transitions
def test_state_transition_builder_from_state_returns_self(
self, test_context):
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
self.assertIsInstance(builder.from_state(test_context.from_state),
StateTransitionBuilder)
def test_state_transition_builder_with_trigger_parameter_returns_self(
self, test_context):
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
self.assertIsInstance(
builder.with_trigger_parameter(test_context.trigger_parameter),
StateTransitionBuilder)
def test_state_transition_builder_provided_guard_is_satisfied_returns_self(
self, test_context):
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
self.assertIsInstance(
builder.provided_guard_is_satisfied(test_context.transition_guard),
StateTransitionBuilder)
def test_state_transition_builder_take_transition_action_sets_transition_action(
self, test_context):
expected = test_context.transition_action
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
builder.take_transition_action(test_context.transition_action)
self.assertEqual(builder._transition_action, expected)
def test_state_transition_builder_with_trigger_parameter_sets_trigger_parameter(
self, test_context):
expected = test_context.trigger_parameter
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
builder.with_trigger_parameter(test_context.trigger_parameter)
self.assertEqual(builder._trigger_parameter, expected)
def test_state_transition_builder_given_trigger_state_sets_trigger_state(
self, test_context):
expected = test_context.trigger_state
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
builder.given_trigger_state(test_context.trigger_state)
self.assertEqual(builder._trigger_state, expected)
def test_state_transition_builder_without_guard_sets_transition_guard_to_None(
self, test_context):
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
builder._transition_guard = test_context.transition_guard
builder.without_guard()
self.assertIsNone(builder._transition_guard)
def test_state_transition_builder_provided_guard_is_satisfied_sets_transition_guard(
self, test_context):
expected = test_context.transition_guard
builder = StateTransitionBuilder(
test_context.trigger_transition_factory)
builder.provided_guard_is_satisfied(test_context.transition_guard)
self.assertEqual(builder._transition_guard, expected)
def test_state_transition_builder_with_trigger_parameter_overrides_existing_trigger_parameter(
self, test_context):
expected = test_context.trigger_parameter
builder = StateTransitionBuilder(
test_context.trigger_transition_factory).with_trigger_parameter(
test_context.trigger_parameter)
builder.with_trigger_parameter(expected)
self.assertEqual(builder._trigger_parameter, expected)
def test_state_transition_builder_given_trigger_state_overrides_existing_trigger_state(
self, test_context):
expected = "new trigger state"
builder = StateTransitionBuilder(
test_context.trigger_transition_factory).given_trigger_state(
test_context.trigger_state)
builder.given_trigger_state(expected)
self.assertEqual(builder._trigger_state, expected)
def test_state_transition_builder_take_transition_action_overrides_existing_transition_action(
self, test_context):
expected = test_context.transition_action
builder = StateTransitionBuilder(
test_context.trigger_transition_factory).take_transition_action(
test_context.transition_action)
builder.take_transition_action(expected)
self.assertEqual(builder._transition_action, expected)
def test_state_transition_builder_calling_append_passes_correct_arguments_to_trigger_transition_factory(
self, trigger_transition_factory, test_context):
builder = StateTransitionBuilder(trigger_transition_factory)
builder._from_state = test_context.from_state
builder._trigger_state = test_context.trigger_state
builder._trigger_parameter = test_context.trigger_parameter
builder._transition_action = test_context.transition_action
builder._transition_guard = test_context.transition_guard
builder._transition_state = test_context.transition_state
expected_trigger = (test_context.from_state,
test_context.trigger_state,
test_context.trigger_parameter)
expected_transition = (test_context.transition_action,
test_context.transition_guard,
test_context.transition_state)
builder.append()
trigger_transition_factory.assert_called_once_with(
expected_trigger, expected_transition)
def test_state_transition_builder_calling_append_with_same_trigger_overrides_existing_transition(
self, trigger_transition_factory, test_context):
trigger_transition_factory2 = create_autospec(
trigger_transition_factory.__class__, spec_set=True)
trigger_transition1 = trigger_transition_factory(None, None)
trigger_transition1.trigger = test_context.trigger
trigger_transition2 = trigger_transition_factory2(None, None)
trigger_transition2.trigger = test_context.trigger
self.assertEqual(trigger_transition1.trigger,
trigger_transition2.trigger)
self.assertNotEqual(trigger_transition1.transition,
trigger_transition2.transition)
builder = StateTransitionBuilder(trigger_transition_factory)
first_transition = builder.append()._transitions[test_context.trigger]
builder._trigger_transition_factory = trigger_transition_factory2
second_transition = builder.append()._transitions[test_context.trigger]
self.assertNotEqual(first_transition, second_transition)
def test_state_transition_builder_calling_append_after_setting_new_trigger_increments_transitions_key_length_by_one(
self, trigger_transition_factory, test_context):
expected_initial_transitions_key_length = 0
builder = StateTransitionBuilder(trigger_transition_factory)
initial_key_length = len(builder._transitions.keys())
self.assertEqual(initial_key_length,
expected_initial_transitions_key_length)
expected_transitions_key_length_difference = 1
builder.given_trigger_state(test_context.trigger_state)
builder.append()
self.assertEqual(
len(builder._transitions.keys()) - initial_key_length,
expected_transitions_key_length_difference)
def test_state_transition_builder_append_returns_self(
self, trigger_transition_factory, test_context):
builder = StateTransitionBuilder(trigger_transition_factory)
self.assertIsInstance(builder.append(), StateTransitionBuilder)