################## mysql-test/t/innodb_undo_tablespaces_basic.test ############
#                                                                             #
# Variable Name: innodb_undo_tablespaces                                      #
# Scope: Global                                                               #
# Access Type: Static                                                         #
# Data Type: string                                                           #
#                                                                             #
#                                                                             #
# Creation Date: 2011-07-05                                                   #
# Author : Sunny Bains                                                        #
#                                                                             #
#                                                                             #
# Description: Read-only config global variable innodb_undo_tablespaces       #
#              * Value check                                                  #
#              * Scope check                                                  #
#                                                                             #
###############################################################################

# We need to reboot in order to get rid of extra undo tablespaces.
--source include/not_valgrind.inc

let MYSQLD_DATADIR = `select @@datadir`;

SELECT @@GLOBAL.innodb_undo_tablespaces >= 2;
let $undo_tablespaces=`SELECT @@GLOBAL.innodb_undo_tablespaces`;


####################################################################
# Make sure the value can be set at runtime                        #
# Test for invalid range and expect a warning
####################################################################

--disable_query_log
call mtr.add_suppression("\\[Warning\\] .*MY-\\d+.* Expected to open 127 undo tablespaces but found 0. Will create the rest");
--enable_query_log

SET GLOBAL innodb_undo_tablespaces=2;
SELECT @@innodb_undo_tablespaces;
--echo # 2 Expected

SET GLOBAL innodb_undo_tablespaces=1;
--echo # Expected warning 'Truncated incorrect innodb_undo_tablespaces value'
SELECT @@innodb_undo_tablespaces;
--echo # 2 Expected

SET GLOBAL innodb_undo_tablespaces=0;
--echo # Expected warning 'Truncated incorrect innodb_undo_tablespaces value'
SELECT @@innodb_undo_tablespaces;
--echo # 2 Expected

SET GLOBAL innodb_undo_tablespaces=-1;
--echo # Expected warning 'Truncated incorrect innodb_undo_tablespaces value'
SELECT @@innodb_undo_tablespaces;
--echo # 2 Expected

--replace_result $undo_tablespaces ORIGINAL_VALUE
--eval SET @@GLOBAL.innodb_undo_tablespaces=$undo_tablespaces;

SELECT COUNT(@@GLOBAL.innodb_undo_tablespaces);
--echo # 1 Expected


################################################################################
# Check if the value in GLOBAL table matches value in variable                 #
################################################################################

--disable_warnings
--disable_query_log
eval SELECT VARIABLE_VALUE-$undo_tablespaces DIFFERENCE
FROM performance_schema.global_variables
WHERE VARIABLE_NAME='innodb_undo_tablespaces';
--enable_query_log
--enable_warnings
--echo 0 Expected


################################################################################
#  Check if accessing variable with and without GLOBAL point to same variable  #
################################################################################
SELECT @@innodb_undo_tablespaces = @@GLOBAL.innodb_undo_tablespaces;
--echo # 1 Expected


################################################################################
#   Check if innodb_undo_tablespaces can be accessed with and without @@ sign  #
################################################################################

SELECT COUNT(@@innodb_undo_tablespaces);
--echo # 1 Expected

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@local.innodb_undo_tablespaces);
--echo # Expected error 'Variable is a GLOBAL variable'

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@SESSION.innodb_undo_tablespaces);
--echo # Expected error 'Variable is a GLOBAL variable'

SELECT COUNT(@@GLOBAL.innodb_undo_tablespaces);
--echo # 1 Expected

--Error ER_BAD_FIELD_ERROR
SELECT innodb_undo_tablespaces = @@SESSION.innodb_undo_tablespaces;
--echo # Expected error 'Unknown column'