diff --git a/include/commons.cpp b/include/commons.cpp
new file mode 100644
index 0000000..e61469b
--- /dev/null
+++ b/include/commons.cpp
@@ -0,0 +1,7 @@
+#include "commons.hpp"
+#include <boost/asio.hpp>
+
+void Test::Hello() const
+{
+    std::cout << "Hello World\n";
+}
diff --git a/include/commons.hpp b/include/commons.hpp
new file mode 100644
index 0000000..d259c68
--- /dev/null
+++ b/include/commons.hpp
@@ -0,0 +1,8 @@
+#pragma once
+
+#include <iostream>
+
+class Test
+{
+    void Hello() const;
+};