New cpp folder structure

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

libs/base/base_tests/control_flow_tests.cpp

@@ -0,0 +1,57 @@
+#include "testing/testing.hpp"
+
+#include "base/control_flow.hpp"
+
+#include <cstdint>
+
+using namespace base;
+
+namespace
+{
+struct Repeater
+{
+  explicit Repeater(uint32_t repetitions) : m_repetitions(repetitions) {}
+
+  template <typename Fn>
+  void ForEach(Fn && fn)
+  {
+    ControlFlowWrapper<Fn> wrapper(std::forward<Fn>(fn));
+    for (uint32_t i = 0; i < m_repetitions; ++i)
+    {
+      ++m_calls;
+      if (wrapper() == ControlFlow::Break)
+        return;
+    }
+  }
+
+  uint32_t m_repetitions = 0;
+  uint32_t m_calls = 0;
+};
+}  // namespace
+
+UNIT_TEST(ControlFlow_Smoke)
+{
+  {
+    Repeater repeater(10);
+    uint32_t c = 0;
+    repeater.ForEach([&c] { ++c; });
+
+    TEST_EQUAL(c, 10, ());
+    TEST_EQUAL(c, repeater.m_repetitions, ());
+    TEST_EQUAL(c, repeater.m_calls, ());
+  }
+
+  {
+    Repeater repeater(10);
+    uint32_t c = 0;
+    repeater.ForEach([&c] {
+      ++c;
+      if (c == 5)
+        return ControlFlow::Break;
+      return ControlFlow::Continue;
+    });
+
+    TEST_EQUAL(c, 5, ());
+    TEST_EQUAL(c, repeater.m_calls, ());
+  }
+}