gh-113879: Fix ResourceWarning in test_asyncio.test_server (GH-113881)

Author: serhiy-storchaka

Lib/test/test_asyncio/test_server.py

@@ -200,13 +200,13 @@ async def test_unix_server_sock_cleanup(self):
             async def serve(*args):
                 pass
 
-            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-            sock.bind(addr)
+            with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
+                sock.bind(addr)
 
-            srv = await asyncio.start_unix_server(serve, sock=sock)
+                srv = await asyncio.start_unix_server(serve, sock=sock)
 
-            srv.close()
-            self.assertFalse(os.path.exists(addr))
+                srv.close()
+                self.assertFalse(os.path.exists(addr))
 
     @socket_helper.skip_unless_bind_unix_socket
     async def test_unix_server_cleanup_gone(self):
@@ -215,14 +215,14 @@ async def test_unix_server_cleanup_gone(self):
             async def serve(*args):
                 pass
 
-            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-            sock.bind(addr)
+            with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
+                sock.bind(addr)
 
-            srv = await asyncio.start_unix_server(serve, sock=sock)
+                srv = await asyncio.start_unix_server(serve, sock=sock)
 
-            os.unlink(addr)
+                os.unlink(addr)
 
-            srv.close()
+                srv.close()
 
     @socket_helper.skip_unless_bind_unix_socket
     async def test_unix_server_cleanup_replaced(self):
@@ -234,11 +234,11 @@ async def serve(*args):
             srv = await asyncio.start_unix_server(serve, addr)
 
             os.unlink(addr)
-            sock = socket.socket(socket.AF_UNIX, socket.SOCK_STREAM)
-            sock.bind(addr)
+            with socket.socket(socket.AF_UNIX, socket.SOCK_STREAM) as sock:
+                sock.bind(addr)
 
-            srv.close()
-            self.assertTrue(os.path.exists(addr))
+                srv.close()
+                self.assertTrue(os.path.exists(addr))
 
     @socket_helper.skip_unless_bind_unix_socket
     async def test_unix_server_cleanup_prevented(self):