+ cmp_ok( $o->incr( 'key-next' ), '==', $_ + 1, 'incr' );
+}
+
+cmp_ok( $o->get( 'key-next' ), '==', $key_next + 1, 'key-next' );
+
+ok( $o->set('test-incrby', 0), 'test-incrby' );
+foreach ( 1 .. 3 ) {
+ cmp_ok( $o->incr('test-incrby', 3), '==', $_ * 3, 'incrby 3' );