diff options
Diffstat (limited to 'tests/http/test_client.py')
| -rw-r--r-- | tests/http/test_client.py | 143 |
1 files changed, 140 insertions, 3 deletions
diff --git a/tests/http/test_client.py b/tests/http/test_client.py index a98091d711..721917f957 100644 --- a/tests/http/test_client.py +++ b/tests/http/test_client.py @@ -37,18 +37,155 @@ from synapse.http.client import ( BlocklistingAgentWrapper, BlocklistingReactorWrapper, BodyExceededMaxSize, + MultipartResponse, _DiscardBodyWithMaxSizeProtocol, + _MultipartParserProtocol, read_body_with_max_size, + read_multipart_response, ) from tests.server import FakeTransport, get_clock from tests.unittest import TestCase +class ReadMultipartResponseTests(TestCase): + data1 = b"\r\n\r\n--6067d4698f8d40a0a794ea7d7379d53a\r\nContent-Type: application/json\r\n\r\n{}\r\n--6067d4698f8d40a0a794ea7d7379d53a\r\nContent-Type: text/plain\r\nContent-Disposition: inline; filename=test_upload\r\n\r\nfile_" + data2 = b"to_stream\r\n--6067d4698f8d40a0a794ea7d7379d53a--\r\n\r\n" + + redirect_data = b"\r\n\r\n--6067d4698f8d40a0a794ea7d7379d53a\r\nContent-Type: application/json\r\n\r\n{}\r\n--6067d4698f8d40a0a794ea7d7379d53a\r\nLocation: https://cdn.example.org/ab/c1/2345.txt\r\n\r\n--6067d4698f8d40a0a794ea7d7379d53a--\r\n\r\n" + + def _build_multipart_response( + self, response_length: Union[int, str], max_length: int + ) -> Tuple[ + BytesIO, + "Deferred[MultipartResponse]", + _MultipartParserProtocol, + ]: + """Start reading the body, returns the response, result and proto""" + response = Mock(length=response_length) + result = BytesIO() + boundary = "6067d4698f8d40a0a794ea7d7379d53a" + deferred = read_multipart_response(response, result, boundary, max_length) + + # Fish the protocol out of the response. + protocol = response.deliverBody.call_args[0][0] + protocol.transport = Mock() + + return result, deferred, protocol + + def _assert_error( + self, + deferred: "Deferred[MultipartResponse]", + protocol: _MultipartParserProtocol, + ) -> None: + """Ensure that the expected error is received.""" + assert isinstance(deferred.result, Failure) + self.assertIsInstance(deferred.result.value, BodyExceededMaxSize) + assert protocol.transport is not None + # type-ignore: presumably abortConnection has been replaced with a Mock. + protocol.transport.abortConnection.assert_called_once() # type: ignore[attr-defined] + + def _cleanup_error(self, deferred: "Deferred[MultipartResponse]") -> None: + """Ensure that the error in the Deferred is handled gracefully.""" + called = [False] + + def errback(f: Failure) -> None: + called[0] = True + + deferred.addErrback(errback) + self.assertTrue(called[0]) + + def test_parse_file(self) -> None: + """ + Check that a multipart response containing a file is properly parsed + into the json/file parts, and the json and file are properly captured + """ + result, deferred, protocol = self._build_multipart_response(249, 250) + + # Start sending data. + protocol.dataReceived(self.data1) + protocol.dataReceived(self.data2) + # Close the connection. + protocol.connectionLost(Failure(ResponseDone())) + + multipart_response: MultipartResponse = deferred.result # type: ignore[assignment] + + self.assertEqual(multipart_response.json, b"{}") + self.assertEqual(result.getvalue(), b"file_to_stream") + self.assertEqual(multipart_response.length, len(b"file_to_stream")) + self.assertEqual(multipart_response.content_type, b"text/plain") + self.assertEqual( + multipart_response.disposition, b"inline; filename=test_upload" + ) + + def test_parse_redirect(self) -> None: + """ + check that a multipart response containing a redirect is properly parsed and redirect url is + returned + """ + result, deferred, protocol = self._build_multipart_response(249, 250) + + # Start sending data. + protocol.dataReceived(self.redirect_data) + # Close the connection. + protocol.connectionLost(Failure(ResponseDone())) + + multipart_response: MultipartResponse = deferred.result # type: ignore[assignment] + + self.assertEqual(multipart_response.json, b"{}") + self.assertEqual(result.getvalue(), b"") + self.assertEqual( + multipart_response.url, b"https://cdn.example.org/ab/c1/2345.txt" + ) + + def test_too_large(self) -> None: + """A response which is too large raises an exception.""" + result, deferred, protocol = self._build_multipart_response(UNKNOWN_LENGTH, 180) + + # Start sending data. + protocol.dataReceived(self.data1) + + self.assertEqual(result.getvalue(), b"file_") + self._assert_error(deferred, protocol) + self._cleanup_error(deferred) + + def test_additional_data(self) -> None: + """A connection can receive data after being closed.""" + result, deferred, protocol = self._build_multipart_response(UNKNOWN_LENGTH, 180) + + # Start sending data. + protocol.dataReceived(self.data1) + self._assert_error(deferred, protocol) + + # More data might have come in. + protocol.dataReceived(self.data2) + + self.assertEqual(result.getvalue(), b"file_") + self._assert_error(deferred, protocol) + self._cleanup_error(deferred) + + def test_content_length(self) -> None: + """The body shouldn't be read (at all) if the Content-Length header is too large.""" + result, deferred, protocol = self._build_multipart_response(250, 1) + + # Deferred shouldn't be called yet. + self.assertFalse(deferred.called) + + # Start sending data. + protocol.dataReceived(self.data1) + self._assert_error(deferred, protocol) + self._cleanup_error(deferred) + + # The data is never consumed. + self.assertEqual(result.getvalue(), b"") + + class ReadBodyWithMaxSizeTests(TestCase): - def _build_response( - self, length: Union[int, str] = UNKNOWN_LENGTH - ) -> Tuple[BytesIO, "Deferred[int]", _DiscardBodyWithMaxSizeProtocol]: + def _build_response(self, length: Union[int, str] = UNKNOWN_LENGTH) -> Tuple[ + BytesIO, + "Deferred[int]", + _DiscardBodyWithMaxSizeProtocol, + ]: """Start reading the body, returns the response, result and proto""" response = Mock(length=length) result = BytesIO() |