Fix some missing connector closes in tests (#10956)

Author: bdraco

tests/test_client_middleware.py

@@ -793,6 +793,8 @@ async def blocking_middleware(
     # Check that no connections were leaked
     assert len(connector._conns) == 0
 
+    await connector.close()
+
 
 async def test_client_middleware_blocks_connection_without_dns_lookup(
     aiohttp_server: AiohttpServer,

tests/test_proxy_functional.py

@@ -463,6 +463,7 @@ async def test_proxy_http_acquired_cleanup(
     assert 0 == len(conn._acquired)
 
     await sess.close()
+    await conn.close()
 
 
 @pytest.mark.skip("we need to reconsider how we test this")
@@ -487,6 +488,7 @@ async def request() -> None:
     assert 0 == len(conn._acquired)
 
     await sess.close()
+    await conn.close()
 
 
 @pytest.mark.skip("we need to reconsider how we test this")
@@ -521,6 +523,7 @@ async def request(pid: int) -> ClientResponse:
     assert {resp.status for resp in responses} == {200}
 
     await sess.close()
+    await conn.close()
 
 
 @pytest.mark.xfail

tests/test_web_sendfile_functional.py

@@ -625,6 +625,7 @@ async def test_static_file_ssl(
 
     resp.release()
     await client.close()
+    await conn.close()
 
 
 async def test_static_file_directory_traversal_attack(