def _reset(self):
# type: () -> None
"""Reset tracker to initial state - doesn't delete events though!."""
self._reset_slots()
self._paused = False
self.latest_action_name = None
self.latest_message = UserUttered.empty()
self.follow_up_action = None
self._topic_stack = utils.TopicStack(self.topics, [],
self.default_topic)
def test_push_pop():
stack = utils.TopicStack(dummy_topics, [], DefaultTopic)
stack.push(dummy_topics[0])
assert stack.top.name == dummy_topics[0].name, \
"pushing a topic should put that topic at the top"
stack.push(dummy_topics[0])
assert stack.top.name == dummy_topics[0].name, \
"pushing a topic a second time should have no effect"
stack.pop()
assert len(stack) == 0, \
"popping the last topic should leave the stack empty"
assert stack.top.name == DefaultTopic.name, \
"popping a the last topic should leave default on top"
stack.pop()
assert len(stack) == 0, \
"popping an empty stack should leave it unchanged"
def test_push_multiple():
stack = utils.TopicStack(dummy_topics, [], DefaultTopic)
stack.push(dummy_topics[0])
stack.push(dummy_topics[1])
stack.push(dummy_topics[2])
assert stack.top.name == dummy_topics[2].name, \
"last pushed topic should be on top"
stack.push(dummy_topics[1])
assert stack.top.name == dummy_topics[1].name, \
"last pushed topic should be on top"
assert len([t for t in stack if
t.name == dummy_topics[1].name]) == 1, \
"pushing multiple times shouldn't produce duplicates"
stack.pop()
assert stack.top.name == dummy_topics[2].name, \
"popping should revert to previous top"
stack.pop()
assert stack.top.name == dummy_topics[0].name, \
"should be no duplicates in the stack"
def test_default():
stack = utils.TopicStack(dummy_topics, [], DefaultTopic)
assert stack.top.name == DefaultTopic.name, \
"default topic not correctly set"
