Make sure that optional inside commented works as expected; fixes #642

include/rfl/Commented.hpp

@@ -14,6 +14,7 @@ template <class T>
 struct Commented {
  public:
   using Type = std::remove_cvref_t<T>;
+  using ReflectionType = Type;
 
   Commented() : value_(Type()) {}
 
@@ -134,6 +135,9 @@ struct Commented {
     return *this;
   }
 
+  /// Returns the underlying object.
+  const ReflectionType& reflection() const { return value_; }
+
   /// Assigns the underlying object.
   void set(const Type& _value) { value_ = _value; }
 

tests/yaml/test_comment_optional_array.cpp

@@ -0,0 +1,22 @@
+#include <gtest/gtest.h>
+
+#include <array>
+#include <optional>
+#include <rfl/Commented.hpp>
+#include <rfl/yaml.hpp>
+
+#include "write_and_read.hpp"
+
+namespace test_comment_optional_array {
+
+struct VeryCoolYaml {
+  rfl::Commented<std::optional<std::array<unsigned, 3>>> optionalArray =
+      std::nullopt;
+};
+
+TEST(yaml, test_comment_optional_array) {
+  const auto yaml = VeryCoolYaml{};
+  write_and_read(yaml);
+}
+
+}  // namespace test_comment_optional_array