--source include/have_innodb.inc

SET @start_global_value = @@global.innodb_tmpdir;
SELECT @start_global_value;

#
# exists as global and session
#
select @@session.innodb_tmpdir;

show global variables like 'innodb_tmpdir';
show session variables like 'innodb_tmpdir';

select * from information_schema.global_variables where variable_name='innodb_tmpdir';
select * from information_schema.session_variables where variable_name='innodb_tmpdir';
#
# Show that it is writable
#

set global innodb_tmpdir=@@global.tmpdir;
set session innodb_tmpdir=@@global.tmpdir;

#
# incorrect types
#
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_tmpdir=1.1;
--error ER_WRONG_TYPE_FOR_VAR
set global innodb_tmpdir=1e1;

#
# path len more than 512
#
--error ER_WRONG_VALUE_FOR_VAR
set global innodb_tmpdir=repeat('a',1000);
show warnings;

#
# Cleanup
#

SET @@global.innodb_tmpdir = @start_global_value;
SELECT @@global.innodb_tmpdir;