gh-116112: Fix `ResourceWarning` in `test_asyncio.test_stream` (#116371)

Co-authored-by: @CendioOssman

diff --git a/Lib/test/test_asyncio/test_streams.py b/Lib/test/test_asyncio/test_streams.py
index bf123ebf9bd158f751ca4f445115bcc7b47bc2ac..2cf48538d5d30d241afd1baa916df4292073e02f 100644 (file)
--- a/Lib/test/test_asyncio/test_streams.py
+++ b/Lib/test/test_asyncio/test_streams.py
@@ -1188,6 +1188,7 @@ os.close(fd)
 
     def test_unhandled_cancel(self):
         async def handle_echo(reader, writer):
+            writer.close()
             asyncio.current_task().cancel()
         messages = self._basetest_unhandled_exceptions(handle_echo)
         self.assertEqual(messages, [])