From acea4d7a2ff61b5beda420b54a8451088060a8cd Mon Sep 17 00:00:00 2001 From: Patrick Cloke Date: Fri, 2 Dec 2022 12:58:56 -0500 Subject: Add missing types to tests.util. (#14597) Removes files under tests.util from the ignored by list, then fully types all tests/util/*.py files. --- tests/util/test_file_consumer.py | 103 +++++++++++++++++++++++---------------- 1 file changed, 60 insertions(+), 43 deletions(-) (limited to 'tests/util/test_file_consumer.py') diff --git a/tests/util/test_file_consumer.py b/tests/util/test_file_consumer.py index 3bb4695405..4f3c983c15 100644 --- a/tests/util/test_file_consumer.py +++ b/tests/util/test_file_consumer.py @@ -12,22 +12,28 @@ # See the License for the specific language governing permissions and # limitations under the License. - import threading -from io import StringIO +from io import BytesIO +from typing import BinaryIO, Generator, Optional, cast from unittest.mock import NonCallableMock -from twisted.internet import defer, reactor +from zope.interface import implementer + +from twisted.internet import defer, reactor as _reactor +from twisted.internet.interfaces import IPullProducer +from synapse.types import ISynapseReactor from synapse.util.file_consumer import BackgroundFileConsumer from tests import unittest +reactor = cast(ISynapseReactor, _reactor) + class FileConsumerTests(unittest.TestCase): @defer.inlineCallbacks - def test_pull_consumer(self): - string_file = StringIO() + def test_pull_consumer(self) -> Generator["defer.Deferred[object]", object, None]: + string_file = BytesIO() consumer = BackgroundFileConsumer(string_file, reactor=reactor) try: @@ -35,55 +41,57 @@ class FileConsumerTests(unittest.TestCase): yield producer.register_with_consumer(consumer) - yield producer.write_and_wait("Foo") + yield producer.write_and_wait(b"Foo") - self.assertEqual(string_file.getvalue(), "Foo") + self.assertEqual(string_file.getvalue(), b"Foo") - yield producer.write_and_wait("Bar") + yield producer.write_and_wait(b"Bar") - self.assertEqual(string_file.getvalue(), "FooBar") + self.assertEqual(string_file.getvalue(), b"FooBar") finally: consumer.unregisterProducer() - yield consumer.wait() + yield consumer.wait() # type: ignore[misc] self.assertTrue(string_file.closed) @defer.inlineCallbacks - def test_push_consumer(self): - string_file = BlockingStringWrite() - consumer = BackgroundFileConsumer(string_file, reactor=reactor) + def test_push_consumer(self) -> Generator["defer.Deferred[object]", object, None]: + string_file = BlockingBytesWrite() + consumer = BackgroundFileConsumer(cast(BinaryIO, string_file), reactor=reactor) try: producer = NonCallableMock(spec_set=[]) consumer.registerProducer(producer, True) - consumer.write("Foo") - yield string_file.wait_for_n_writes(1) + consumer.write(b"Foo") + yield string_file.wait_for_n_writes(1) # type: ignore[misc] - self.assertEqual(string_file.buffer, "Foo") + self.assertEqual(string_file.buffer, b"Foo") - consumer.write("Bar") - yield string_file.wait_for_n_writes(2) + consumer.write(b"Bar") + yield string_file.wait_for_n_writes(2) # type: ignore[misc] - self.assertEqual(string_file.buffer, "FooBar") + self.assertEqual(string_file.buffer, b"FooBar") finally: consumer.unregisterProducer() - yield consumer.wait() + yield consumer.wait() # type: ignore[misc] self.assertTrue(string_file.closed) @defer.inlineCallbacks - def test_push_producer_feedback(self): - string_file = BlockingStringWrite() - consumer = BackgroundFileConsumer(string_file, reactor=reactor) + def test_push_producer_feedback( + self, + ) -> Generator["defer.Deferred[object]", object, None]: + string_file = BlockingBytesWrite() + consumer = BackgroundFileConsumer(cast(BinaryIO, string_file), reactor=reactor) try: producer = NonCallableMock(spec_set=["pauseProducing", "resumeProducing"]) - resume_deferred = defer.Deferred() + resume_deferred: defer.Deferred = defer.Deferred() producer.resumeProducing.side_effect = lambda: resume_deferred.callback( None ) @@ -93,65 +101,72 @@ class FileConsumerTests(unittest.TestCase): number_writes = 0 with string_file.write_lock: for _ in range(consumer._PAUSE_ON_QUEUE_SIZE): - consumer.write("Foo") + consumer.write(b"Foo") number_writes += 1 producer.pauseProducing.assert_called_once() - yield string_file.wait_for_n_writes(number_writes) + yield string_file.wait_for_n_writes(number_writes) # type: ignore[misc] yield resume_deferred producer.resumeProducing.assert_called_once() finally: consumer.unregisterProducer() - yield consumer.wait() + yield consumer.wait() # type: ignore[misc] self.assertTrue(string_file.closed) +@implementer(IPullProducer) class DummyPullProducer: - def __init__(self): - self.consumer = None - self.deferred = defer.Deferred() + def __init__(self) -> None: + self.consumer: Optional[BackgroundFileConsumer] = None + self.deferred: "defer.Deferred[object]" = defer.Deferred() - def resumeProducing(self): + def resumeProducing(self) -> None: d = self.deferred self.deferred = defer.Deferred() d.callback(None) - def write_and_wait(self, bytes): + def stopProducing(self) -> None: + raise RuntimeError("Unexpected call") + + def write_and_wait(self, write_bytes: bytes) -> "defer.Deferred[object]": + assert self.consumer is not None d = self.deferred - self.consumer.write(bytes) + self.consumer.write(write_bytes) return d - def register_with_consumer(self, consumer): + def register_with_consumer( + self, consumer: BackgroundFileConsumer + ) -> "defer.Deferred[object]": d = self.deferred self.consumer = consumer self.consumer.registerProducer(self, False) return d -class BlockingStringWrite: - def __init__(self): - self.buffer = "" +class BlockingBytesWrite: + def __init__(self) -> None: + self.buffer = b"" self.closed = False self.write_lock = threading.Lock() - self._notify_write_deferred = None + self._notify_write_deferred: Optional[defer.Deferred] = None self._number_of_writes = 0 - def write(self, bytes): + def write(self, write_bytes: bytes) -> None: with self.write_lock: - self.buffer += bytes + self.buffer += write_bytes self._number_of_writes += 1 reactor.callFromThread(self._notify_write) - def close(self): + def close(self) -> None: self.closed = True - def _notify_write(self): + def _notify_write(self) -> None: "Called by write to indicate a write happened" with self.write_lock: if not self._notify_write_deferred: @@ -161,7 +176,9 @@ class BlockingStringWrite: d.callback(None) @defer.inlineCallbacks - def wait_for_n_writes(self, n): + def wait_for_n_writes( + self, n: int + ) -> Generator["defer.Deferred[object]", object, None]: "Wait for n writes to have happened" while True: with self.write_lock: -- cgit 1.4.1