added more tests

include/matador/object/object_info.hpp

@@ -0,0 +1,34 @@
+#ifndef OBJECT_INFO_HPP
+#define OBJECT_INFO_HPP
+
+#include "matador/object/basic_object_info.hpp"
+#include "matador/object/object_definition.hpp"
+
+namespace matador::object {
+
+class schema_node;
+
+template<typename Type>
+class object_info final : public basic_object_info {
+public:
+    explicit object_info(schema_node &node, object_definition &&definition)
+    : basic_object_info(node, typeid(Type), std::move(definition)) {}
+
+    const Type &prototype() const { return prototype_; }
+
+private:
+    Type prototype_;
+};
+
+template<typename Type>
+using object_info_ref = std::reference_wrapper<const object_info<Type>>;
+
+namespace detail {
+struct null_type {};
+}
+
+using null_info = object_info<detail::null_type>;
+
+}
+
+#endif //OBJECT_INFO_HPP