Fix Session tests
diff --git a/tests/mocks/libraries/session.php b/tests/mocks/libraries/session.php
index 562033b..adbecb3 100644
--- a/tests/mocks/libraries/session.php
+++ b/tests/mocks/libraries/session.php
@@ -33,4 +33,6 @@
 			$_COOKIE[$name] = $value;
 		}
 	}
-}
\ No newline at end of file
+}
+
+class Mock_Libraries_Session_native extends CI_Session_native {}
\ No newline at end of file