fetchField(); db_insert('test') ->fields([ // A record already exists with name 'John'. 'name' => 'john', 'age' => 2, 'job' => 'Baby', ]) ->execute(); $num_records_after = db_query('SELECT COUNT(*) FROM {test}')->fetchField(); $this->assertSame($num_records_before + 1, (int) $num_records_after, 'Record inserts correctly.'); $saved_age = db_query('SELECT age FROM {test} WHERE name = :name', [':name' => 'john'])->fetchField(); $this->assertIdentical($saved_age, '2', 'Can retrieve after inserting.'); } }