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############### mysql-test\t\innodb_undo_log_truncate_basic.test ##############
# #
# Variable Name: innodb_undo_log_truncate #
# Scope: Global #
# Access Type: Dynamic #
# Data Type: boolean #
# #
# #
# Creation Date: 2008-02-07 #
# Author : Sharique Abdullah #
# #
# #
# Description:Test Cases of Dynamic System Variable innodb_undo_log_truncate #
# that checks the behavior of this variable in the following ways #
# * Value Check #
# * Scope Check #
# #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/ #
# server-system-variables.html #
# #
###############################################################################
--source include/have_innodb.inc
SET @start_global_value = @@global.innodb_undo_log_truncate;
SELECT @start_global_value;
--echo '#---------------------BS_STVARS_028_01----------------------#'
####################################################################
# Displaying default value #
####################################################################
SELECT COUNT(@@GLOBAL.innodb_undo_log_truncate);
--echo 1 Expected
--echo '#---------------------BS_STVARS_028_02----------------------#'
####################################################################
# Check if Value can set #
####################################################################
SET @@global.innodb_undo_log_truncate = 0;
SELECT @@global.innodb_undo_log_truncate;
SET @@global.innodb_undo_log_truncate ='On' ;
SELECT @@global.innodb_undo_log_truncate;
SET @@global.innodb_undo_log_truncate ='Off' ;
SELECT @@global.innodb_undo_log_truncate;
SET @@global.innodb_undo_log_truncate = 1;
SELECT @@global.innodb_undo_log_truncate;
--echo '#---------------------BS_STVARS_028_03----------------------#'
#################################################################
# Check if the value in GLOBAL Table matches value in variable #
#################################################################
--disable_warnings
SELECT IF(@@GLOBAL.innodb_undo_log_truncate,'ON','OFF') = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_undo_log_truncate';
--echo 1 Expected
SELECT COUNT(@@GLOBAL.innodb_undo_log_truncate);
--echo 1 Expected
SELECT COUNT(VARIABLE_VALUE)
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_undo_log_truncate';
--echo 1 Expected
--enable_warnings
--echo '#---------------------BS_STVARS_028_04----------------------#'
################################################################################
# Check if accessing variable with and without GLOBAL point to same variable #
################################################################################
SELECT @@innodb_undo_log_truncate = @@GLOBAL.innodb_undo_log_truncate;
--echo 1 Expected
--echo '#---------------------BS_STVARS_028_05----------------------#'
################################################################################
# Check if innodb_undo_log_truncate can be accessed with and without @@ sign #
################################################################################
SELECT COUNT(@@innodb_undo_log_truncate);
--echo 1 Expected
--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@local.innodb_undo_log_truncate);
--echo Expected error 'Variable is a GLOBAL variable'
--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@SESSION.innodb_undo_log_truncate);
--echo Expected error 'Variable is a GLOBAL variable'
SELECT COUNT(@@GLOBAL.innodb_undo_log_truncate);
--echo 1 Expected
--Error ER_BAD_FIELD_ERROR
SELECT innodb_undo_log_truncate = @@SESSION.innodb_undo_log_truncate;
#
# Cleanup
#
SET @@global.innodb_undo_log_truncate = @start_global_value;
SELECT @@global.innodb_undo_log_truncate;
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