capture expected warnings in the test

Author: kristjanvalur

tests/test_asyncio/test_connection.py

@@ -316,7 +316,8 @@ async def mock_aclose(self):
     url: str = request.config.getoption("--redis-url")
     r1 = await Redis.from_url(url)
     with patch.object(r1, "aclose", mock_aclose):
-        await r1.close()
+        with pytest.deprecated_call():
+            await r1.close()
         assert calls == 1
 
     with pytest.deprecated_call():
@@ -453,8 +454,9 @@ async def test_client_garbage_collection(request):
     with mock.patch.object(client, "connection") as a:
         # we cannot, in unittests, or from asyncio, reliably trigger garbage collection
         # so we must just invoke the handler
-        client.__del__()
-        assert a._close.called
+        with pytest.warns(ResourceWarning):
+            client.__del__()
+            assert a._close.called
 
     await client.aclose()
     await pool.aclose()
@@ -478,8 +480,9 @@ async def test_connection_garbage_collection(request):
         with mock.patch.object(conn, "_writer") as a:
             # we cannot, in unittests, or from asyncio, reliably trigger garbage collection
             # so we must just invoke the handler
-            conn.__del__()
-            assert a.close.called
+            with pytest.warns(ResourceWarning):
+                conn.__del__()
+                assert a.close.called
 
     await client.aclose()
     await pool.aclose()