Issue #22685, asyncio: mock also resume_reading in test_pause_reading()

Lib/test/test_asyncio/test_subprocess.py

@@ -181,6 +181,7 @@ class SubprocessMixin:
                                          loop=self.loop)
             stdout_transport = proc._transport.get_pipe_transport(1)
             stdout_transport.pause_reading = mock.Mock()
+            stdout_transport.resume_reading = mock.Mock()
 
             stdout, stderr = yield from proc.communicate()