New cpp folder structure

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

libs/base/base_tests/ref_counted_tests.cpp

@@ -0,0 +1,83 @@
+#include "testing/testing.hpp"
+
+#include "base/ref_counted.hpp"
+
+using namespace base;
+
+namespace
+{
+struct Resource : public RefCounted
+{
+  explicit Resource(bool & destroyed) : m_destroyed(destroyed) { m_destroyed = false; }
+
+  ~Resource() override { m_destroyed = true; }
+
+  bool & m_destroyed;
+};
+
+UNIT_TEST(RefCounted_Smoke)
+{
+  {
+    RefCountPtr<Resource> p;
+  }
+
+  {
+    bool destroyed;
+    {
+      RefCountPtr<Resource> p(new Resource(destroyed));
+      TEST_EQUAL(1, p->NumRefs(), ());
+      TEST(!destroyed, ());
+    }
+    TEST(destroyed, ());
+  }
+
+  {
+    bool destroyed;
+    {
+      RefCountPtr<Resource> a(new Resource(destroyed));
+      TEST_EQUAL(1, a->NumRefs(), ());
+      TEST(!destroyed, ());
+
+      RefCountPtr<Resource> b(a);
+      TEST(a.Get() == b.Get(), ());
+      TEST_EQUAL(2, a->NumRefs(), ());
+      TEST(!destroyed, ());
+
+      {
+        RefCountPtr<Resource> c;
+        TEST(c.Get() == nullptr, ());
+
+        c = b;
+        TEST(a.Get() == b.Get(), ());
+        TEST(b.Get() == c.Get(), ());
+        TEST_EQUAL(3, a->NumRefs(), ());
+        TEST(!destroyed, ());
+      }
+
+      TEST(a.Get() == b.Get(), ());
+      TEST_EQUAL(2, a->NumRefs(), ());
+      TEST(!destroyed, ());
+
+      RefCountPtr<Resource> d(std::move(b));
+      TEST(b.Get() == nullptr, ());
+      TEST(a.Get() == d.Get(), ());
+      TEST_EQUAL(2, a->NumRefs(), ());
+      TEST(!destroyed, ());
+
+#ifdef __clang__
+#pragma clang diagnostic push
+#pragma clang diagnostic ignored "-Wself-assign-overloaded"
+#endif  // #ifdef __clang__
+      a = a;
+#ifdef __clang__
+#pragma clang diagnostic pop
+#endif  // #ifdef __clang__
+
+      TEST_EQUAL(a.Get(), d.Get(), ());
+      TEST_EQUAL(2, a->NumRefs(), ());
+      TEST(!destroyed, ());
+    }
+    TEST(destroyed, ());
+  }
+}
+}  // namespace