diff --git a/tests/src/utils/string_utils.hpp b/tests/src/utils/string_utils.hpp
new file mode 100644
index 0000000..90f802c
--- /dev/null
+++ b/tests/src/utils/string_utils.hpp
@@ -0,0 +1,13 @@
+#pragma once
+
+#include <string>
+
+namespace utils::string_utils
+{
+std::string getMaxPrefix();
+std::string getMaxId();
+std::string getMaxName();
+std::string getTooLongPrefix();
+std::string getTooLongId();
+std::string getTooLongName();
+} // namespace utils::string_utils
\ No newline at end of file