[3.11] gh-103607: Fix pause_reading to work when called from connection_made in asyncio. (GH-17425) (#103918)

gh-103607: Fix `pause_reading` to work when called from `connection_made` in `asyncio`. (GH-17425)
(cherry picked from commit 78942ecd9b)

Co-authored-by: Itayazolay <itayazolay@gmail.com>
Co-authored-by: Kumar Aditya <59607654+kumaraditya303@users.noreply.github.com>

Lib/test/test_asyncio/test_proactor_events.py

@@ -444,6 +444,19 @@ class ProactorSocketTransportTests(test_utils.TestCase):
 
         self.assertFalse(tr.is_reading())
 
+    def test_pause_reading_connection_made(self):
+        tr = self.socket_transport()
+        self.protocol.connection_made.side_effect = lambda _: tr.pause_reading()
+        test_utils.run_briefly(self.loop)
+        self.assertFalse(tr.is_reading())
+        self.loop.assert_no_reader(7)
+
+        tr.resume_reading()
+        self.assertTrue(tr.is_reading())
+
+        tr.close()
+        self.assertFalse(tr.is_reading())
+
 
     def pause_writing_transport(self, high):
         tr = self.socket_transport()

Lib/test/test_asyncio/test_selector_events.py

@@ -534,6 +534,22 @@ class SelectorSocketTransportTests(test_utils.TestCase):
         self.assertFalse(tr.is_reading())
         self.loop.assert_no_reader(7)
 
+    def test_pause_reading_connection_made(self):
+        tr = self.socket_transport()
+        self.protocol.connection_made.side_effect = lambda _: tr.pause_reading()
+        test_utils.run_briefly(self.loop)
+        self.assertFalse(tr.is_reading())
+        self.loop.assert_no_reader(7)
+
+        tr.resume_reading()
+        self.assertTrue(tr.is_reading())
+        self.loop.assert_reader(7, tr._read_ready)
+
+        tr.close()
+        self.assertFalse(tr.is_reading())
+        self.loop.assert_no_reader(7)
+
+
     def test_read_eof_received_error(self):
         transport = self.socket_transport()
         transport.close = mock.Mock()