Add periods and newlines to make ruff happy

tests/unit/test_snap.py

@@ -638,7 +638,7 @@ def test_fake_socket(self):
 
     @patch("builtins.hasattr", return_value=False)
     def test_not_implemented_raised_when_missing_socket_af_unix(self, _: MagicMock):
-        """Assert NotImplementedError raised when missing socket.AF_UNIX"""
+        """Assert NotImplementedError raised when missing socket.AF_UNIX."""
         s = snap._UnixSocketConnection("localhost")
         with self.assertRaises(NotImplementedError):
             s.connect()  # hasattr(socket, "AF_UNIX") == False
@@ -852,8 +852,9 @@ def test_snap_get(self):
 
         An invalid key will raise an error if typed=False, but return None if typed=True.
         """
+
         def fake_snap(command: str, optargs: Optional[Iterable[str]] = None) -> str:
-            """Snap._snap would normally call subprocess.check_output(["snap", ...], ...)
+            """Snap._snap would normally call subprocess.check_output(["snap", ...], ...).
 
             Here we only handle the "get" commands generated by Snap.get:
                 ["snap", "get", "-d"] -- equivalent to (None, typed=True)