added test for table sequence

test/backends/TableSequenceFixture.hpp

@@ -0,0 +1,18 @@
+#ifndef MATADOR_TABLE_SEQUENCE_FIXTURE_HPP
+#define MATADOR_TABLE_SEQUENCE_FIXTURE_HPP
+
+#include "matador/sql/connection.hpp"
+
+namespace matador::test {
+class TableSequenceFixture {
+public:
+  TableSequenceFixture();
+  ~TableSequenceFixture();
+
+protected:
+  sql::connection db;
+  std::string sequence_table_name{"test_seq_table"};
+};
+}
+
+#endif //MATADOR_TABLE_SEQUENCE_FIXTURE_HPP