def test_act__two_middlewares__middlewares_are_called(self):
sideeffect = Mock()
def middleware1(next):
def apply(action):
sideeffect(1)
next(action)
return apply
def middleware2(next):
def apply(action):
sideeffect(2)
next(action)
return apply
target = Store(test_state, [middleware1, middleware2])
test_action = Action()
target.act(test_action)
sideeffect.assert_has_calls([
call(1),
call(2)
])
def test_act__updates_state(self):
expected = {'some': 'object'}
target = Store(test_state)
test_action = Action()
test_action.act = Mock(return_value=expected)
target.act(test_action)
assert expected == target.state
def test_perform__query_gets_state(self):
target = Store(test_state)
test_query = Query()
def assertion(state): assert test_state == state
test_query.perform = assertion
target.perform_query(test_query)
def test_act__action_gets_state(self):
target = Store(test_state)
test_action = Action()
def assertion(state):
assert test_state == state
return state
test_action.act = assertion
target.act(test_action)
def test_act__one_middleware__middleware_is_called(self):
sideeffect = Mock()
def middleware(next):
def apply(action):
sideeffect()
next(action)
return apply
target = Store(test_state, [middleware])
test_action = Action()
target.act(test_action)
sideeffect.assert_called_once()
def test_act__state_not_changed__subscriber_not_triggered(self):
target = Store(test_state)
subscriber = Mock()
target.subscribe(subscriber)
test_action = Action()
test_action.act = lambda state: state
target.act(test_action)
subscriber.assert_not_called()
def test_act__state_changed__subscriber_triggered(self):
expected = {'some': 'object'}
target = Store(test_state)
subscriber = Mock()
target.subscribe(subscriber)
test_action = Action()
test_action.act = Mock(return_value=expected)
target.act(test_action)
subscriber.assert_called_once()
def create_store():
store = Store(init_state, [restart_middleware])
store.subscribe(render_state)
return store