source include/have_tokudb.inc;
# test that varchar expansion + default change works

--disable_warnings
DROP TABLE IF EXISTS t;
--enable_warnings

SET SESSION TOKUDB_DISABLE_SLOW_ALTER=ON;

CREATE TABLE t (a VARCHAR(100) NOT NULL DEFAULT '', b VARCHAR(256) NOT NULL DEFAULT '') ENGINE=TokuDB;
SHOW CREATE TABLE t;

ALTER TABLE t CHANGE COLUMN a a VARCHAR(255) NOT NULL DEFAULT 'a';
SHOW CREATE TABLE t;

ALTER TABLE t CHANGE COLUMN a a VARCHAR(256) NOT NULL DEFAULT 'b';
SHOW CREATE TABLE t;

# no shrinkage
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN b b VARCHAR(255) NOT NULL DEFAULT 'c';

ALTER TABLE t CHANGE COLUMN b b VARCHAR(1024) NOT NULL DEFAULT 'd';
SHOW CREATE TABLE t;

# no shrinkage
--replace_regex /MariaDB/XYZ/ /MySQL/XYZ/
--error ER_UNSUPPORTED_EXTENSION
ALTER TABLE t CHANGE COLUMN b b VARCHAR(256) NOT NULL DEFAULT 'e';

DROP TABLE t;