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test_trackers.py
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test_trackers.py
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import json
import logging
import os
import tempfile
from typing import List
import fakeredis
import pytest
import rasa.utils.io
from rasa.core import training, restore
from rasa.core.actions.action import ACTION_LISTEN_NAME, ACTION_SESSION_START_NAME
from rasa.core.agent import Agent
from rasa.core.domain import Domain
from rasa.core.events import (
SlotSet,
UserUttered,
ActionExecuted,
Restarted,
ActionReverted,
UserUtteranceReverted,
SessionStarted,
Event,
)
from rasa.core.tracker_store import (
InMemoryTrackerStore,
RedisTrackerStore,
SQLTrackerStore,
)
from rasa.core.tracker_store import TrackerStore
from rasa.core.trackers import DialogueStateTracker, EventVerbosity
from tests.core.conftest import (
DEFAULT_STORIES_FILE,
EXAMPLE_DOMAINS,
TEST_DIALOGUES,
MockedMongoTrackerStore,
)
from tests.core.utilities import (
tracker_from_dialogue_file,
read_dialogue_file,
user_uttered,
get_tracker,
)
domain = Domain.load("examples/moodbot/domain.yml")
class MockRedisTrackerStore(RedisTrackerStore):
def __init__(self, _domain: Domain) -> None:
self.red = fakeredis.FakeStrictRedis()
self.record_exp = None
# added in redis==3.3.0, but not yet in fakeredis
self.red.connection_pool.connection_class.health_check_interval = 0
TrackerStore.__init__(self, _domain)
def stores_to_be_tested():
temp = tempfile.mkdtemp()
return [
MockRedisTrackerStore(domain),
InMemoryTrackerStore(domain),
SQLTrackerStore(domain, db=os.path.join(temp, "rasa.db")),
MockedMongoTrackerStore(domain),
]
def stores_to_be_tested_ids():
return ["redis-tracker", "in-memory-tracker", "SQL-tracker", "mongo-tracker"]
def test_tracker_duplicate():
filename = "data/test_dialogues/moodbot.json"
dialogue = read_dialogue_file(filename)
tracker = DialogueStateTracker(dialogue.name, domain.slots)
tracker.recreate_from_dialogue(dialogue)
num_actions = len(
[event for event in dialogue.events if isinstance(event, ActionExecuted)]
)
# There is always one duplicated tracker more than we have actions,
# as the tracker also gets duplicated for the
# action that would be next (but isn't part of the operations)
assert len(list(tracker.generate_all_prior_trackers())) == num_actions + 1
@pytest.mark.parametrize("store", stores_to_be_tested(), ids=stores_to_be_tested_ids())
def test_tracker_store_storage_and_retrieval(store):
tracker = store.get_or_create_tracker("some-id")
# the retrieved tracker should be empty
assert tracker.sender_id == "some-id"
# Action listen should be in there
assert list(tracker.events) == [ActionExecuted(ACTION_LISTEN_NAME)]
# lets log a test message
intent = {"name": "greet", "confidence": 1.0}
tracker.update(UserUttered("/greet", intent, []))
assert tracker.latest_message.intent.get("name") == "greet"
store.save(tracker)
# retrieving the same tracker should result in the same tracker
retrieved_tracker = store.get_or_create_tracker("some-id")
assert retrieved_tracker.sender_id == "some-id"
assert len(retrieved_tracker.events) == 2
assert retrieved_tracker.latest_message.intent.get("name") == "greet"
# getting another tracker should result in an empty tracker again
other_tracker = store.get_or_create_tracker("some-other-id")
assert other_tracker.sender_id == "some-other-id"
assert len(other_tracker.events) == 1
@pytest.mark.parametrize("store", stores_to_be_tested(), ids=stores_to_be_tested_ids())
@pytest.mark.parametrize("pair", zip(TEST_DIALOGUES, EXAMPLE_DOMAINS))
def test_tracker_store(store, pair):
filename, domainpath = pair
domain = Domain.load(domainpath)
tracker = tracker_from_dialogue_file(filename, domain)
store.save(tracker)
restored = store.retrieve(tracker.sender_id)
assert restored == tracker
async def test_tracker_write_to_story(tmpdir, moodbot_domain: Domain):
tracker = tracker_from_dialogue_file(
"data/test_dialogues/moodbot.json", moodbot_domain
)
p = tmpdir.join("export.md")
tracker.export_stories_to_file(p.strpath)
trackers = await training.load_data(
p.strpath,
moodbot_domain,
use_story_concatenation=False,
tracker_limit=1000,
remove_duplicates=False,
)
assert len(trackers) == 1
recovered = trackers[0]
assert len(recovered.events) == 11
assert recovered.events[4].type_name == "user"
assert recovered.events[4].intent == {"confidence": 1.0, "name": "mood_unhappy"}
async def test_tracker_state_regression_without_bot_utterance(default_agent: Agent):
sender_id = "test_tracker_state_regression_without_bot_utterance"
for i in range(0, 2):
await default_agent.handle_message("/greet", sender_id=sender_id)
tracker = default_agent.tracker_store.get_or_create_tracker(sender_id)
# Ensures that the tracker has changed between the utterances
# (and wasn't reset in between them)
expected = (
"action_session_start;action_listen;greet;utter_greet;action_listen;"
"greet;utter_greet;action_listen"
)
assert (
";".join([e.as_story_string() for e in tracker.events if e.as_story_string()])
== expected
)
async def test_tracker_state_regression_with_bot_utterance(default_agent: Agent):
sender_id = "test_tracker_state_regression_with_bot_utterance"
for i in range(0, 2):
await default_agent.handle_message("/greet", sender_id=sender_id)
tracker = default_agent.tracker_store.get_or_create_tracker(sender_id)
expected = [
"action_session_start",
None,
"action_listen",
"greet",
"utter_greet",
None,
"action_listen",
"greet",
"utter_greet",
None,
"action_listen",
]
assert [e.as_story_string() for e in tracker.events] == expected
async def test_bot_utterance_comes_after_action_event(default_agent):
sender_id = "test_bot_utterance_comes_after_action_event"
await default_agent.handle_message("/greet", sender_id=sender_id)
tracker = default_agent.tracker_store.get_or_create_tracker(sender_id)
# important is, that the 'bot' comes after the second 'action' and not
# before
expected = [
"action",
"session_started",
"action",
"user",
"action",
"bot",
"action",
]
assert [e.type_name for e in tracker.events] == expected
def test_tracker_entity_retrieval(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
assert list(tracker.get_latest_entity_values("entity_name")) == []
intent = {"name": "greet", "confidence": 1.0}
tracker.update(
UserUttered(
"/greet",
intent,
[
{
"start": 1,
"end": 5,
"value": "greet",
"entity": "entity_name",
"extractor": "manual",
}
],
)
)
assert list(tracker.get_latest_entity_values("entity_name")) == ["greet"]
assert list(tracker.get_latest_entity_values("unknown")) == []
def test_tracker_update_slots_with_entity(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
test_entity = default_domain.entities[0]
expected_slot_value = "test user"
intent = {"name": "greet", "confidence": 1.0}
tracker.update(
UserUttered(
"/greet",
intent,
[
{
"start": 1,
"end": 5,
"value": expected_slot_value,
"entity": test_entity,
"extractor": "manual",
}
],
),
default_domain,
)
assert tracker.get_slot(test_entity) == expected_slot_value
def test_restart_event(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
intent = {"name": "greet", "confidence": 1.0}
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
tracker.update(UserUttered("/greet", intent, []))
tracker.update(ActionExecuted("my_action"))
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
assert len(tracker.events) == 4
assert tracker.latest_message.text == "/greet"
assert len(list(tracker.generate_all_prior_trackers())) == 4
tracker.update(Restarted())
assert len(tracker.events) == 5
assert tracker.followup_action is not None
assert tracker.followup_action == ACTION_LISTEN_NAME
assert tracker.latest_message.text is None
assert len(list(tracker.generate_all_prior_trackers())) == 1
dialogue = tracker.as_dialogue()
recovered = DialogueStateTracker("default", default_domain.slots)
recovered.recreate_from_dialogue(dialogue)
assert recovered.current_state() == tracker.current_state()
assert len(recovered.events) == 5
assert recovered.latest_message.text is None
assert len(list(recovered.generate_all_prior_trackers())) == 1
def test_session_start(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
# add a SessionStarted event
tracker.update(SessionStarted())
# tracker has one event
assert len(tracker.events) == 1
def test_revert_action_event(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
intent = {"name": "greet", "confidence": 1.0}
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
tracker.update(UserUttered("/greet", intent, []))
tracker.update(ActionExecuted("my_action"))
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
# Expecting count of 4:
# +3 executed actions
# +1 final state
assert tracker.latest_action_name == ACTION_LISTEN_NAME
assert len(list(tracker.generate_all_prior_trackers())) == 4
tracker.update(ActionReverted())
# Expecting count of 3:
# +3 executed actions
# +1 final state
# -1 reverted action
assert tracker.latest_action_name == "my_action"
assert len(list(tracker.generate_all_prior_trackers())) == 3
dialogue = tracker.as_dialogue()
recovered = DialogueStateTracker("default", default_domain.slots)
recovered.recreate_from_dialogue(dialogue)
assert recovered.current_state() == tracker.current_state()
assert tracker.latest_action_name == "my_action"
assert len(list(tracker.generate_all_prior_trackers())) == 3
def test_revert_user_utterance_event(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
intent1 = {"name": "greet", "confidence": 1.0}
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
tracker.update(UserUttered("/greet", intent1, []))
tracker.update(ActionExecuted("my_action_1"))
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
intent2 = {"name": "goodbye", "confidence": 1.0}
tracker.update(UserUttered("/goodbye", intent2, []))
tracker.update(ActionExecuted("my_action_2"))
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
# Expecting count of 6:
# +5 executed actions
# +1 final state
assert tracker.latest_action_name == ACTION_LISTEN_NAME
assert len(list(tracker.generate_all_prior_trackers())) == 6
tracker.update(UserUtteranceReverted())
# Expecting count of 3:
# +5 executed actions
# +1 final state
# -2 rewound actions associated with the /goodbye
# -1 rewound action from the listen right before /goodbye
assert tracker.latest_action_name == "my_action_1"
assert len(list(tracker.generate_all_prior_trackers())) == 3
dialogue = tracker.as_dialogue()
recovered = DialogueStateTracker("default", default_domain.slots)
recovered.recreate_from_dialogue(dialogue)
assert recovered.current_state() == tracker.current_state()
assert tracker.latest_action_name == "my_action_1"
assert len(list(tracker.generate_all_prior_trackers())) == 3
def test_traveling_back_in_time(default_domain: Domain):
tracker = DialogueStateTracker("default", default_domain.slots)
# the retrieved tracker should be empty
assert len(tracker.events) == 0
intent = {"name": "greet", "confidence": 1.0}
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
tracker.update(UserUttered("/greet", intent, []))
import time
time.sleep(1)
time_for_timemachine = time.time()
time.sleep(1)
tracker.update(ActionExecuted("my_action"))
tracker.update(ActionExecuted(ACTION_LISTEN_NAME))
# Expecting count of 4:
# +3 executed actions
# +1 final state
assert tracker.latest_action_name == ACTION_LISTEN_NAME
assert len(tracker.events) == 4
assert len(list(tracker.generate_all_prior_trackers())) == 4
tracker = tracker.travel_back_in_time(time_for_timemachine)
# Expecting count of 2:
# +1 executed actions
# +1 final state
assert tracker.latest_action_name == ACTION_LISTEN_NAME
assert len(tracker.events) == 2
assert len(list(tracker.generate_all_prior_trackers())) == 2
async def test_dump_and_restore_as_json(default_agent, tmpdir_factory):
trackers = await default_agent.load_data(DEFAULT_STORIES_FILE)
for tracker in trackers:
out_path = tmpdir_factory.mktemp("tracker").join("dumped_tracker.json")
dumped = tracker.current_state(EventVerbosity.AFTER_RESTART)
rasa.utils.io.dump_obj_as_json_to_file(out_path.strpath, dumped)
restored_tracker = restore.load_tracker_from_json(
out_path.strpath, default_agent.domain
)
assert restored_tracker == tracker
def test_read_json_dump(default_agent: Agent):
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
restored_tracker = restore.load_tracker_from_json(
tracker_dump, default_agent.domain
)
assert len(restored_tracker.events) == 7
assert restored_tracker.latest_action_name == "action_listen"
assert not restored_tracker.is_paused()
assert restored_tracker.sender_id == "mysender"
assert restored_tracker.events[-1].timestamp == 1517821726.211042
restored_state = restored_tracker.current_state(EventVerbosity.AFTER_RESTART)
assert restored_state == tracker_json
def test_current_state_after_restart(default_agent):
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
tracker_json["events"].insert(3, {"event": "restart"})
tracker = DialogueStateTracker.from_dict(
tracker_json.get("sender_id"),
tracker_json.get("events", []),
default_agent.domain.slots,
)
events_after_restart = [e.as_dict() for e in list(tracker.events)[4:]]
state = tracker.current_state(EventVerbosity.AFTER_RESTART)
assert state.get("events") == events_after_restart
def test_current_state_all_events(default_agent):
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
tracker_json["events"].insert(3, {"event": "restart"})
tracker = DialogueStateTracker.from_dict(
tracker_json.get("sender_id"),
tracker_json.get("events", []),
default_agent.domain.slots,
)
evts = [e.as_dict() for e in tracker.events]
state = tracker.current_state(EventVerbosity.ALL)
assert state.get("events") == evts
def test_current_state_no_events(default_agent):
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
tracker = DialogueStateTracker.from_dict(
tracker_json.get("sender_id"),
tracker_json.get("events", []),
default_agent.domain.slots,
)
state = tracker.current_state(EventVerbosity.NONE)
assert state.get("events") is None
def test_current_state_applied_events(default_agent):
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
# add some events that result in other events not being applied anymore
tracker_json["events"].insert(1, {"event": "restart"})
tracker_json["events"].insert(7, {"event": "rewind"})
tracker_json["events"].insert(8, {"event": "undo"})
tracker = DialogueStateTracker.from_dict(
tracker_json.get("sender_id"),
tracker_json.get("events", []),
default_agent.domain.slots,
)
evts = [e.as_dict() for e in tracker.events]
applied_events = [evts[2], evts[9]]
state = tracker.current_state(EventVerbosity.APPLIED)
assert state.get("events") == applied_events
def test_session_started_not_part_of_applied_events(default_agent: Agent):
# take tracker dump and insert a SessionStarted event sequence
tracker_dump = "data/test_trackers/tracker_moodbot.json"
tracker_json = json.loads(rasa.utils.io.read_file(tracker_dump))
tracker_json["events"].insert(
4, {"event": ActionExecuted.type_name, "name": ACTION_SESSION_START_NAME}
)
tracker_json["events"].insert(5, {"event": SessionStarted.type_name})
# initialise a tracker from this list of events
tracker = DialogueStateTracker.from_dict(
tracker_json.get("sender_id"),
tracker_json.get("events", []),
default_agent.domain.slots,
)
# the SessionStart event was at index 5, the tracker's `applied_events()` should
# be the same as the list of events from index 6 onwards
assert tracker.applied_events() == list(tracker.events)[6:]
async def test_tracker_dump_e2e_story(default_agent):
sender_id = "test_tracker_dump_e2e_story"
await default_agent.handle_message("/greet", sender_id=sender_id)
await default_agent.handle_message("/goodbye", sender_id=sender_id)
tracker = default_agent.tracker_store.get_or_create_tracker(sender_id)
story = tracker.export_stories(e2e=True)
assert story.strip().split("\n") == [
"## test_tracker_dump_e2e_story",
"* greet: /greet",
" - utter_greet",
"* goodbye: /goodbye",
]
def test_get_last_event_for():
events = [ActionExecuted("one"), user_uttered("two", 1)]
tracker = get_tracker(events)
assert tracker.get_last_event_for(ActionExecuted).action_name == "one"
def test_get_last_event_with_reverted():
events = [ActionExecuted("one"), ActionReverted(), user_uttered("two", 1)]
tracker = get_tracker(events)
assert tracker.get_last_event_for(ActionExecuted) is None
def test_get_last_event_for_with_skip():
events = [ActionExecuted("one"), user_uttered("two", 1), ActionExecuted("three")]
tracker = get_tracker(events)
assert tracker.get_last_event_for(ActionExecuted, skip=1).action_name == "one"
def test_get_last_event_for_with_exclude():
events = [ActionExecuted("one"), user_uttered("two", 1), ActionExecuted("three")]
tracker = get_tracker(events)
assert (
tracker.get_last_event_for(
ActionExecuted, action_names_to_exclude=["three"]
).action_name
== "one"
)
def test_last_executed_has():
events = [
ActionExecuted("one"),
user_uttered("two", 1),
ActionExecuted(ACTION_LISTEN_NAME),
]
tracker = get_tracker(events)
assert tracker.last_executed_action_has("one") is True
def test_last_executed_has_not_name():
events = [
ActionExecuted("one"),
user_uttered("two", 1),
ActionExecuted(ACTION_LISTEN_NAME),
]
tracker = get_tracker(events)
assert tracker.last_executed_action_has("another") is False
def test_events_metadata():
# It should be possible to attach arbitrary metadata to any event and then
# retrieve it after getting the tracker dict representation.
events = [
ActionExecuted("one", metadata={"one": 1}),
user_uttered("two", 1, metadata={"two": 2}),
ActionExecuted(ACTION_LISTEN_NAME, metadata={"three": 3}),
]
events = get_tracker(events).current_state(EventVerbosity.ALL)["events"]
assert events[0]["metadata"] == {"one": 1}
assert events[1]["metadata"] == {"two": 2}
assert events[2]["metadata"] == {"three": 3}
@pytest.mark.parametrize("key, value", [("asfa", 1), ("htb", None)])
def test_tracker_without_slots(key, value, caplog):
event = SlotSet(key, value)
tracker = DialogueStateTracker.from_dict("any", [])
assert key in tracker.slots
with caplog.at_level(logging.INFO):
event.apply_to(tracker)
v = tracker.get_slot(key)
assert v == value
assert len(caplog.records) == 0