added connection pool and tests

test/orm/backend/test_backend_service.cpp

@@ -24,7 +24,9 @@ void test_backend_service::destroy(sql::connection_impl *impl)
 
 const sql::dialect *test_backend_service::dialect() const
 {
-  static sql::dialect dialect_ = sql::dialect_builder::builder().create().build();
+  static sql::dialect dialect_ = sql::dialect_builder::builder()
+    .create()
+    .build();
   return &dialect_;
 }
 

test/orm/backend/test_result_reader.cpp

@@ -87,6 +87,7 @@ void test_result_reader::read_value(const char *id, const size_t index, utils::v
   val = "value";
 }
 utils::attribute_reader &test_result_reader::result_binder() {
-  return query_result_reader::result_binder();
+  return empty_binder_;
 }
+
 } // namespace matador::test::orm

test/orm/backend/test_result_reader.hpp

@@ -5,6 +5,33 @@
 
 namespace matador::test::orm {
 
+namespace detail {
+
+class empty_binder final : public utils::attribute_reader
+{
+public:
+    void read_value(const char *, size_t, int8_t &) override {}
+    void read_value(const char *, size_t, int16_t &) override {}
+    void read_value(const char *, size_t, int32_t &) override {}
+    void read_value(const char *, size_t, int64_t &) override {}
+    void read_value(const char *, size_t, uint8_t &) override {}
+    void read_value(const char *, size_t, uint16_t &) override {}
+    void read_value(const char *, size_t, uint32_t &) override {}
+    void read_value(const char *, size_t, uint64_t &) override {}
+    void read_value(const char *, size_t, bool &) override {}
+    void read_value(const char *, size_t, float &) override {}
+    void read_value(const char *, size_t, double &) override {}
+    void read_value(const char *, size_t, time &) override {}
+    void read_value(const char *, size_t, date &) override {}
+    void read_value(const char *, size_t, char *, size_t) override {}
+    void read_value(const char *, size_t, std::string &) override {}
+    void read_value(const char *, size_t, std::string &, size_t) override {}
+    void read_value(const char *, size_t, utils::blob &) override {}
+    void read_value(const char *, size_t, utils::value &, size_t) override {}
+};
+
+}
+
 class test_result_reader final : public sql::query_result_reader {
 public:
   [[nodiscard]] size_t column_count() const override;
@@ -36,6 +63,7 @@ protected:
 
 private:
   uint8_t rows_{5};
+  detail::empty_binder empty_binder_;
 };
 
 }