New cpp folder structure

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

libs/geometry/geometry_tests/vector_test.cpp

@@ -0,0 +1,43 @@
+#include "testing/testing.hpp"
+
+#include "geometry/avg_vector.hpp"
+
+namespace
+{
+template <class T, size_t N>
+bool EqualArrays(T (&a1)[N], T (&a2)[N])
+{
+  for (size_t i = 0; i < N; ++i)
+  {
+    if (!AlmostEqualULPs(a1[i], a2[i]))
+      return false;
+  }
+  return true;
+}
+}  // namespace
+
+UNIT_TEST(AvgVector_Smoke)
+{
+  math::AvgVector<double, 3> holder(3);
+
+  double ethalon1[] = { 5, 5, 5 };
+  double ethalon2[] = { 5.5, 5.5, 5.5 };
+  double ethalon3[] = { 6, 6, 6 };
+
+  double arr1[] = { 5, 5, 5 };
+  double arr2[] = { 6, 6, 6 };
+  double arr3[] = { 5, 5, 5 };
+  double arr4[] = { 6, 6, 6 };
+
+  holder.Next(arr1);
+  TEST(EqualArrays(arr1, ethalon1), ());
+
+  holder.Next(arr2);
+  TEST(EqualArrays(arr2, ethalon2), ());
+
+  holder.Next(arr3);
+  TEST(EqualArrays(arr3, ethalon1), ());
+
+  holder.Next(arr4);
+  TEST(EqualArrays(arr4, ethalon3), ());
+}