bpo-37148: Fix asyncio test that check for warning when running the test suite with huntleaks (GH-13800)

pablogsal · web-flow · commit 4cdbc452ce30 · 2019-06-04T11:26:20.000+01:00
diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
@@ -1229,10 +1229,14 @@ def test_eof_feed_when_closing_writer(self):
         self.assertEqual(messages, [])
 
     def test_stream_reader_create_warning(self):
+        with contextlib.suppress(AttributeError):
+            del asyncio.StreamReader
         with self.assertWarns(DeprecationWarning):
             asyncio.StreamReader
 
     def test_stream_writer_create_warning(self):
+        with contextlib.suppress(AttributeError):
+            del asyncio.StreamWriter
         with self.assertWarns(DeprecationWarning):
             asyncio.StreamWriter
 
