def test_publisher_failure():
messages = []
publisher = Publisher(messages.extend)
with pytest.raises(NotImplementedError):
with publisher.batch(batch_identifier, begin):
raise NotImplementedError
published_messages = map(reserialize, messages)
assert get_operation(get_operation(published_messages[0])) == begin
assert get_operation(get_operation(published_messages[1])) == rollback
# Ensure it actually generates valid data.
assert list(states.validate(published_messages))
assert list(sequences.validate(published_messages))
for i, message in enumerate(published_messages):
assert message.header.publisher == publisher.id
assert message.header.sequence == i
# Write another message to ensure that the publisher can continue to be used.
assert len(messages) == 2
publisher.publish()
assert len(messages) == 3
assert messages[2].header.sequence == 2
def unwrap_transaction(events):
operations = map(lambda event: get_operation(get_operation(event)), events)
assert isinstance(operations[0], BeginOperation)
assert isinstance(operations[-1], (CommitOperation, RollbackOperation))
assert events[0].batch_operation.batch_identifier == events[
-1].batch_operation.batch_identifier
return operations[1:-1]
def assert_same_batch(events):
# Protocol buffer messages aren't hashable, so we have to test against the
# serialized immutable form.
assert len(
set([
get_operation(event).batch_identifier.SerializeToString()
for event in events
])) == 1
def test_publisher():
messages = []
publisher = Publisher(messages.extend)
with publisher.batch(batch_identifier, begin) as publish:
publish(mutation)
published_messages = map(reserialize, messages)
assert get_operation(get_operation(published_messages[0])) == begin
assert get_operation(get_operation(published_messages[1])) == mutation
assert get_operation(get_operation(published_messages[2])) == commit
for i, message in enumerate(published_messages):
assert message.header.publisher == publisher.id
assert message.header.sequence == i
# Ensure it actually generates valid data.
assert list(states.validate(published_messages))
assert list(sequences.validate(published_messages))
def unwrap_transaction(events):
operations = map(lambda event: get_operation(get_operation(event)), events)
assert isinstance(operations[0], BeginOperation)
assert isinstance(operations[-1], (CommitOperation, RollbackOperation))
assert events[0].batch_operation.batch_identifier == events[-1].batch_operation.batch_identifier
return operations[1:-1]
def assert_same_batch(events):
# Protocol buffer messages aren't hashable, so we have to test against the
# serialized immutable form.
assert len(set([get_operation(event).batch_identifier.SerializeToString() for event in events])) == 1
