New cpp folder structure

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

libs/indexer/indexer_tests/complex_serdes_utils_tests.cpp

@@ -0,0 +1,60 @@
+#include "testing/testing.hpp"
+
+#include "indexer/complex/serdes_utils.hpp"
+
+#include "coding/reader.hpp"
+#include "coding/writer.hpp"
+
+#include <algorithm>
+#include <cstdint>
+#include <list>
+#include <set>
+#include <vector>
+
+namespace
+{
+using ByteVector = std::vector<uint8_t>;
+
+template <typename Cont>
+void CollectionPrimitiveTest(Cont const & cont)
+{
+  ByteVector buffer;
+  MemWriter<decltype(buffer)> writer(buffer);
+  WriterSink<decltype(writer)> sink(writer);
+  coding_utils::WriteCollectionPrimitive(sink, cont);
+
+  MemReader reader(buffer.data(), buffer.size());
+  ReaderSource<decltype(reader)> src(reader);
+  Cont res;
+  coding_utils::ReadCollectionPrimitive(src, std::inserter(res, std::end(res)));
+  TEST_EQUAL(cont, res, ());
+}
+
+UNIT_TEST(Utils_CollectionPrimitive)
+{
+  {
+    std::list<uint8_t> const cont{1, 2, 3, 4};
+    CollectionPrimitiveTest(cont);
+  }
+  {
+    std::list<int8_t> const cont{-1, -2, -3, -4};
+    CollectionPrimitiveTest(cont);
+  }
+  {
+    std::vector<uint32_t> const cont{1, 2, 3, 4};
+    CollectionPrimitiveTest(cont);
+  }
+  {
+    std::vector<int32_t> const cont{-1, -2, -3, -4};
+    CollectionPrimitiveTest(cont);
+  }
+  {
+    std::set<uint64_t> const cont{1, 2, 3, 4};
+    CollectionPrimitiveTest(cont);
+  }
+  {
+    std::set<int64_t> const cont{-1, -2, -3, -4};
+    CollectionPrimitiveTest(cont);
+  }
+}
+}  // namespace