################# mysql-test\t\innodb_max_dirty_pages_pct_basic.test ##########
#                                                                             #
# Variable Name: innodb_max_dirty_pages_pct                                   #
# Scope: GLOBAL                                                               #
# Access Type: Dynamic                                                        #
# Data Type: Numeric                                                          #
# Default Value: 75                                                           #
# Range: 0-99                                                                 #
#                                                                             #
#                                                                             #
# Creation Date: 2008-02-07                                                   #
# Author:  Rizwan                                                             #
#                                                                             #
#Description: Test Cases of Dynamic System Variable                           #
#             innodb_max_dirty_pages_pct that checks the behavior of          #
#             this variable in the following ways                             #
#              * Default Value                                                #
#              * Valid & Invalid values                                       #
#              * Scope & Access method                                        #
#              * Data Integrity                                               #
#                                                                             #
# Reference: http://dev.mysql.com/doc/refman/5.1/en/                          #
#  server-system-variables.html                                               #
#                                                                             #
###############################################################################
--source include/have_innodb.inc
--source include/load_sysvars.inc

# set default value for test
SET @save_innodb_max_dirty_pages_pct=@@global.innodb_max_dirty_pages_pct;
set @@global.innodb_max_dirty_pages_pct=75;

######################################################################
#                    START OF innodb_max_dirty_pages_pct TESTS       #
######################################################################


################################################################################
#   Saving initial value of innodb_max_dirty_pages_pct in a temporary variable #
################################################################################

SET @global_start_value = @@global.innodb_max_dirty_pages_pct;
SELECT @global_start_value;

# need this because setting innodb_max_dirty_pages_pct to lower than this
# should cause a warning
SET @global_start_max_dirty_lwm_value = @@global.innodb_max_dirty_pages_pct_lwm;
SELECT @global_start_max_dirty_lwm_value;


SET @@global.innodb_max_dirty_pages_pct_lwm = 0;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;

--echo '#--------------------FN_DYNVARS_046_01------------------------#'
########################################################################
#           Display the DEFAULT value of innodb_max_dirty_pages_pct    #
########################################################################

SET @@global.innodb_max_dirty_pages_pct = 0;
SET @@global.innodb_max_dirty_pages_pct = DEFAULT;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#---------------------FN_DYNVARS_046_02-------------------------#'
################################################################################
# check if innodb_max_dirty_pages_pct can be accessed with and without @@ sign #
################################################################################

--Error ER_GLOBAL_VARIABLE
SET innodb_max_dirty_pages_pct = 1;
SELECT @@innodb_max_dirty_pages_pct;

--Error ER_UNKNOWN_TABLE
SELECT local.innodb_max_dirty_pages_pct;

SET global innodb_max_dirty_pages_pct = 0;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#--------------------FN_DYNVARS_046_03------------------------#'
##########################################################################
#      change the value of innodb_max_dirty_pages_pct to a valid value   #
##########################################################################

SET @@global.innodb_max_dirty_pages_pct = 0.0;
SELECT @@global.innodb_max_dirty_pages_pct;

SET @@global.innodb_max_dirty_pages_pct = 1;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 99;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#--------------------FN_DYNVARS_046_04------------------------#'
##########################################################################
#      change value of based on innodb_max_dirty_pages_pct_lwm           #
##########################################################################
SET @@global.innodb_max_dirty_pages_pct_lwm = @global_start_value - 1;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;

# this should cause warning
SET @@global.innodb_max_dirty_pages_pct = @global_start_value - 2;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#--------------------FN_DYNVARS_046_05-------------------------#'
###########################################################################
#      Change the value of innodb_max_dirty_pages_pct to invalid value    #
###########################################################################

SET @@global.innodb_max_dirty_pages_pct = -1;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = -1024;
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = "T";
SELECT @@global.innodb_max_dirty_pages_pct;

--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = "Y";
SELECT @@global.innodb_max_dirty_pages_pct;

SET @@global.innodb_max_dirty_pages_pct = 100;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 1001;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 100000;
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = ' ';
SELECT @@global.innodb_max_dirty_pages_pct;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = " ";
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = 1.1;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 0.1;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 31.34;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 100;
SELECT @@global.innodb_max_dirty_pages_pct;
set global innodb_max_dirty_pages_pct = 99.999;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#----------------------FN_DYNVARS_046_06------------------------#'
#########################################################################
#     Check if the value in GLOBAL Table matches value in variable      #
#########################################################################

--disable_warnings
SELECT @@global.innodb_max_dirty_pages_pct =
 VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
  WHERE VARIABLE_NAME='innodb_max_dirty_pages_pct';
--enable_warnings
SELECT @@global.innodb_max_dirty_pages_pct;
--disable_warnings
SELECT VARIABLE_VALUE FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
 WHERE VARIABLE_NAME='innodb_max_dirty_pages_pct';
--enable_warnings

--echo '#---------------------FN_DYNVARS_046_07-------------------------#'
###################################################################
#        Check if ON and OFF values can be used on variable       #
###################################################################

--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = OFF;
SELECT @@global.innodb_max_dirty_pages_pct;

--ERROR ER_WRONG_TYPE_FOR_VAR
SET @@global.innodb_max_dirty_pages_pct = ON;
SELECT @@global.innodb_max_dirty_pages_pct;

--echo '#---------------------FN_DYNVARS_046_08----------------------#'
###################################################################
#      Check if TRUE and FALSE values can be used on variable     #
###################################################################

SET @@global.innodb_max_dirty_pages_pct = TRUE;
SELECT @@global.innodb_max_dirty_pages_pct;
SET @@global.innodb_max_dirty_pages_pct = FALSE;
SELECT @@global.innodb_max_dirty_pages_pct;

##############################
#   Restore initial value    #
##############################

SET @@global.innodb_max_dirty_pages_pct = @global_start_value;
SELECT @@global.innodb_max_dirty_pages_pct;

SET @@global.innodb_max_dirty_pages_pct_lwm = @global_start_max_dirty_lwm_value;
SELECT @@global.innodb_max_dirty_pages_pct_lwm;

SET @@global.innodb_max_dirty_pages_pct=@save_innodb_max_dirty_pages_pct;

###############################################################
#                    END OF innodb_max_dirty_pages_pct TESTS  #
###############################################################
