Update testlib

src/testlib.cpp

@@ -12,11 +12,14 @@
 
 #include "testlib.hpp"
 
+#include <type_traits>
+
 static void print_message(std::string msg)
 {
     if (msg.size() > 0) {
         std::cout << "message: " << msg << "\n\n";
-    } else {
+    }
+    else {
         std::cout << "\n";
     }
 }
@@ -30,7 +33,8 @@ void m_assert(bool expr, std::string expr_str, std::string f, std::string file,
     if (expr) {
         std::cout << "\x1B[32mOK\033[0m\n";
         print_message(msg);
-    } else {
+    }
+    else {
         std::cout << "\x1B[31mFAIL\033[0m\n";
         print_message(msg);
         std::cout << file << " " << line << ": Assertion \"" << expr_str