change random data

test/testing_scripts/creat_test.cpp

@@ -11,7 +11,7 @@
 #include <string>
 
 void generate_random_data(char *buffer, size_t length) {
-  const char charset[] = "0123456789,.-#'?!";
+  const char charset[] = "0123456789?!";
   size_t charset_size = sizeof(charset) - 1;
   for (size_t i = 0; i < length; i++) {
     buffer[i] = charset[rand() % charset_size];