New cpp folder structure

Signed-off-by: Alexander Borsuk <me@alex.bio>

libs/testing/testregister.hpp

@@ -0,0 +1,42 @@
+#pragma once
+
+#include <functional>
+#include <utility>
+
+class TestRegister
+{
+public:
+  TestRegister(char const * testname, char const * filename, std::function<void()> && fnTest)
+    : m_testname(testname), m_filename(filename), m_fn(std::move(fnTest)), m_next(nullptr)
+  {
+    if (FirstRegister() == nullptr)
+    {
+      FirstRegister() = this;
+    }
+    else
+    {
+      TestRegister * last = FirstRegister();
+      while (last->m_next != nullptr)
+        last = last->m_next;
+      last->m_next = this;
+    }
+  }
+
+  static TestRegister *& FirstRegister()
+  {
+    static TestRegister * test = nullptr;
+    return test;
+  }
+
+  // Test name.
+  char const * m_testname;
+
+  // File name.
+  char const * m_filename;
+
+  // Function to run test.
+  std::function<void()> m_fn;
+
+  // Next test in chain.
+  TestRegister * m_next;
+};