EVOLUTION-MANAGER

Edit File: innodb_doublewrite_basic.test

################## mysql-test\t\innodb_doublewrite_basic.test #################
#                                                                             #
# Variable Name: innodb_doublewrite                                           #
# Scope: Global                                                               #
# Access Type: Static                                                         #
# Data Type: boolean                                                          #
#                                                                             #
#                                                                             #
# Creation Date: 2008-02-07                                                   #
# Author : Sharique Abdullah                                                  #
#                                                                             #
#                                                                             #
# Description:Test Cases of Dynamic System Variable innodb_doublewrite        #
#             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

--echo '#---------------------BS_STVARS_026_01----------------------#'
####################################################################
#   Displaying default value                                       #
####################################################################
SELECT COUNT(@@GLOBAL.innodb_doublewrite);
--echo 1 Expected

--echo '#---------------------BS_STVARS_026_02----------------------#'
####################################################################
#   Check if Value can set                                         #
####################################################################

--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SET @@GLOBAL.innodb_doublewrite=1;
--echo Expected error 'Read only variable'

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

--echo '#---------------------BS_STVARS_026_03----------------------#'
#################################################################
# Check if the value in GLOBAL Table matches value in variable  #
#################################################################

--disable_warnings
SELECT IF(@@GLOBAL.innodb_doublewrite, "ON", "OFF") = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='innodb_doublewrite';
--enable_warnings
--echo 1 Expected

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

--disable_warnings
SELECT COUNT(VARIABLE_VALUE)
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='innodb_doublewrite';
--enable_warnings
--echo 1 Expected

--echo '#---------------------BS_STVARS_026_04----------------------#'
################################################################################
#  Check if accessing variable with and without GLOBAL point to same variable  #
################################################################################
SELECT @@innodb_doublewrite = @@GLOBAL.innodb_doublewrite;
--echo 1 Expected

--echo '#---------------------BS_STVARS_026_05----------------------#'
################################################################################
#   Check if innodb_doublewrite can be accessed with and without @@ sign       #
################################################################################

SELECT COUNT(@@innodb_doublewrite);
--echo 1 Expected

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

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

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

--Error ER_BAD_FIELD_ERROR
SELECT innodb_doublewrite = @@SESSION.innodb_doublewrite;
--echo Expected error 'Readonly variable'