Make various asyncio test files individually runnable

Lib/test/test_asyncio/test_base_events.py

@@ -588,3 +588,7 @@ class BaseEventLoopWithSelectorTests(unittest.TestCase):
         self.loop._accept_connection(MyProto, sock)
         self.assertTrue(sock.close.called)
         self.assertTrue(m_log.exception.called)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_proactor_events.py

@@ -478,3 +478,7 @@ class BaseProactorEventLoopTests(unittest.TestCase):
         self.loop._stop_serving(sock)
         self.assertTrue(sock.close.called)
         self.proactor._stop_serving.assert_called_with(sock)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_selector_events.py

@@ -1483,3 +1483,7 @@ class SelectorDatagramTransportTests(unittest.TestCase):
         transport._fatal_error(err)
         self.protocol.connection_refused.assert_called_with(err)
         m_exc.assert_called_with('Fatal error for %s', transport)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_selectors.py

@@ -143,3 +143,7 @@ class BaseSelectorTests(unittest.TestCase):
     if hasattr(selectors.DefaultSelector, 'fileno'):
         def test_fileno(self):
             self.assertIsInstance(selectors.DefaultSelector().fileno(), int)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_transports.py

@@ -53,3 +53,7 @@ class TransportTests(unittest.TestCase):
         self.assertRaises(NotImplementedError, transport.send_signal, 1)
         self.assertRaises(NotImplementedError, transport.terminate)
         self.assertRaises(NotImplementedError, transport.kill)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_unix_events.py

@@ -768,3 +768,7 @@ class UnixWritePipeTransportTests(unittest.TestCase):
         tr.write_eof()
         self.assertTrue(tr._closing)
         self.assertFalse(self.protocol.connection_lost.called)
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_windows_events.py

@@ -93,3 +93,7 @@ class ProactorTests(unittest.TestCase):
                 protocols.Protocol, ADDRESS)
 
         return 'done'
+
+
+if __name__ == '__main__':
+    unittest.main()

Lib/test/test_asyncio/test_windows_utils.py

@@ -138,3 +138,7 @@ class PopenTests(unittest.TestCase):
         # allow for partial reads...
         self.assertTrue(msg.upper().rstrip().startswith(out))
         self.assertTrue(b"stderr".startswith(err))
+
+
+if __name__ == '__main__':
+    unittest.main()