completed tests for string only labels decoder mode
diff --git a/test/qcbor_decode_tests.h b/test/qcbor_decode_tests.h
index 862e79d..398a8af 100644
--- a/test/qcbor_decode_tests.h
+++ b/test/qcbor_decode_tests.h
@@ -161,6 +161,9 @@
 int BignumParseTest(void);
 
 
+int StringDecoderModeFailTest(void);
+
+
 /*
  Parse some nested maps
  */