def test_only_if():
r = Reactor(greet)
assert r.condition_function is None
cond = lambda x: False
r.only_if(cond)
assert r.condition_function is not None
with pytest.raises(AssertionError):
r = Reactor(greet)
r.only_if('not-a-function')
pytest.fail()
def test_condition_met():
r = Reactor(greet)
evt = Event(GenericEventType(), payload=dict())
# no condition set
is_met = r._condition_met(evt)
assert is_met
# condition is not met
r.only_if(only_test_events)
is_met = r._condition_met(evt)
assert not is_met
# condition is met
evt.payload['test'] = 'value'
is_met = r._condition_met(evt)
assert is_met