Added to_select_from

tests/test_to_select_from.cpp

@@ -0,0 +1,26 @@
+#include <gtest/gtest.h>
+
+#include <rfl/json.hpp>
+#include <sqlgen.hpp>
+#include <sqlgen/parsing/to_select_from.hpp>
+
+namespace test_to_select_from {
+
+struct TestTable {
+  std::string field1;
+  int32_t field2;
+  sqlgen::PrimaryKey<uint32_t> id;
+  std::optional<std::string> nullable;
+};
+
+TEST(general, test_to_select_from) {
+  const auto select_from_stmt = sqlgen::parsing::to_select_from<TestTable>();
+
+  const std::string expected =
+      R"({"table":{"name":"TestTable"},"columns":[{"name":"field1","type":{"type":"Text","properties":{"primary":false,"nullable":false}}},{"name":"field2","type":{"type":"Int32","properties":{"primary":false,"nullable":false}}},{"name":"id","type":{"type":"UInt32","properties":{"primary":true,"nullable":false}}},{"name":"nullable","type":{"type":"Text","properties":{"primary":false,"nullable":true}}}]})";
+
+  const auto json_str = rfl::json::write(select_from_stmt);
+
+  EXPECT_EQ(json_str, expected);
+}
+}  // namespace test_to_select_from