Tests: Added color to the C++ tests

test/test.h

@@ -53,6 +53,11 @@ public:
   void fail (const std::string&);
   void skip (const std::string&);
 
+private:
+  std::string red (const std::string&);
+  std::string green (const std::string&);
+  std::string yellow (const std::string&);
+
 private:
   int _planned;
   int _counter;