def test_cache_raises_aggregate_not_found_when_projector_func_returns_none(
self):
transcoder = JSONTranscoder()
transcoder.register(UUIDAsHex())
transcoder.register(DecimalAsStr())
transcoder.register(DatetimeAsISO())
transcoder.register(EmailAddressAsStr())
event_recorder = SQLiteAggregateRecorder(SQLiteDatastore(":memory:"))
event_recorder.create_table()
event_store = EventStore(
mapper=Mapper(transcoder=transcoder),
recorder=event_recorder,
)
repository = Repository(
event_store,
cache_maxsize=2,
)
aggregate = Aggregate()
event_store.put(aggregate.collect_events())
self.assertEqual(1, repository.get(aggregate.id).version)
aggregate.trigger_event(Aggregate.Event)
event_store.put(aggregate.collect_events())
with self.assertRaises(AggregateNotFound):
repository.get(aggregate.id, projector_func=lambda _, __: None)
def test_cache_fastforward_false(self):
transcoder = JSONTranscoder()
transcoder.register(UUIDAsHex())
transcoder.register(DecimalAsStr())
transcoder.register(DatetimeAsISO())
transcoder.register(EmailAddressAsStr())
event_recorder = SQLiteAggregateRecorder(SQLiteDatastore(":memory:"))
event_recorder.create_table()
event_store = EventStore(
mapper=Mapper(transcoder=transcoder),
recorder=event_recorder,
)
repository = Repository(
event_store,
cache_maxsize=2,
fastforward=False,
)
aggregate = Aggregate()
event_store.put(aggregate.collect_events())
self.assertEqual(1, repository.get(aggregate.id).version)
aggregate.trigger_event(Aggregate.Event)
event_store.put(aggregate.collect_events())
self.assertEqual(1, repository.get(aggregate.id).version)
def test_cache_maxsize_nonzero(self):
transcoder = JSONTranscoder()
transcoder.register(UUIDAsHex())
transcoder.register(DecimalAsStr())
transcoder.register(DatetimeAsISO())
transcoder.register(EmailAddressAsStr())
event_recorder = SQLiteAggregateRecorder(SQLiteDatastore(":memory:"))
event_recorder.create_table()
event_store = EventStore(
mapper=Mapper(transcoder=transcoder),
recorder=event_recorder,
)
repository = Repository(event_store, cache_maxsize=2)
self.assertEqual(type(repository.cache), LRUCache)
aggregate1 = Aggregate()
self.assertFalse(aggregate1.id in repository)
event_store.put(aggregate1.collect_events())
self.assertTrue(aggregate1.id in repository)
aggregate2 = Aggregate()
self.assertFalse(aggregate2.id in repository)
event_store.put(aggregate2.collect_events())
self.assertTrue(aggregate2.id in repository)
aggregate3 = Aggregate()
self.assertFalse(aggregate3.id in repository)
event_store.put(aggregate3.collect_events())
self.assertTrue(aggregate3.id in repository)
self.assertFalse(aggregate1.id in repository.cache.cache)
self.assertEqual(1, repository.get(aggregate1.id).version)
self.assertEqual(1, repository.get(aggregate2.id).version)
self.assertEqual(1, repository.get(aggregate3.id).version)
aggregate1.trigger_event(Aggregate.Event)
event_store.put(aggregate1.collect_events())
self.assertEqual(2, repository.get(aggregate1.id).version)
def test_trigger_event(self):
a = Aggregate()
# Check the aggregate can trigger further events.
a.trigger_event(AggregateEvent)
self.assertLess(a.created_on, a.modified_on)
pending = a.collect_events()
self.assertEqual(len(pending), 2)
self.assertIsInstance(pending[0], AggregateCreated)
self.assertEqual(pending[0].originator_version, 1)
self.assertIsInstance(pending[1], AggregateEvent)
self.assertEqual(pending[1].originator_version, 2)
def test_call_base_class(self):
before_created = datetime.now(tz=TZINFO)
a = Aggregate()
after_created = datetime.now(tz=TZINFO)
self.assertIsInstance(a, Aggregate)
self.assertIsInstance(a.id, UUID)
self.assertIsInstance(a.version, int)
self.assertEqual(a.version, 1)
self.assertIsInstance(a.created_on, datetime)
self.assertIsInstance(a.modified_on, datetime)
self.assertEqual(a.created_on, a.modified_on)
self.assertGreater(a.created_on, before_created)
self.assertGreater(after_created, a.created_on)
events = a.collect_events()
self.assertIsInstance(events[0], AggregateCreated)
self.assertEqual("Aggregate.Created", type(events[0]).__qualname__)
def test_contains(self):
transcoder = JSONTranscoder()
transcoder.register(UUIDAsHex())
transcoder.register(DecimalAsStr())
transcoder.register(DatetimeAsISO())
event_recorder = POPOAggregateRecorder()
event_store = EventStore(
mapper=Mapper(transcoder=transcoder),
recorder=event_recorder,
)
aggregate = Aggregate()
event_store.put(aggregate.collect_events())
repository = Repository(event_store)
self.assertTrue(aggregate.id in repository)
self.assertFalse(uuid4() in repository)
