###################### mysql-test\t\init_slave_func.test  #####################
#                                                                             #
# Variable Name: init_slave                                                   #
# Scope: GLOBAL                                                               #
# Access Type: Dynamic                                                        #
# Data Type: string                                                           #
# Default Value:                                                              #
# Range:                                                                      #
#                                                                             #
#                                                                             #
# Creation Date: 2008-03-08                                                   #
# Author:  Rizwan                                                             #
# Modified: HHunger 2008-09-29 Fixed the bug by inserting the usual wait and  #
#                              SQL-Satements to control master and slave,     #
#                              deleted the sleep and made improvements like:  #
#                              - Replaced the opt file by dynamic variables,  #
#                              - Made the tests independant of the initial    #
#                                values of the global variables,              #
#                              - Reduced the test to the needed test case to  #
#                                save run time,                               #
#                              - Beautification.                              #
#                                                                             #
# Description: Test Cases of Dynamic System Variable init_slave               #
#              that checks the behavior of this variable                      #
#                                                                             #
# Reference:                                                                  #
# http://dev.mysql.com/doc/refman/5.1/en/server-system-variables.html         #
#                                                                             #
###############################################################################

source include/master-slave.inc;
--echo connection slave
connection slave;
#
# save the current values

SET @start_max_connections= @@global.max_connections;
SET @start_init_slave= @@global.init_slave;

# setting of a global value with an effect on the next start of the slave server
# check that @@global.init_slave could be set
let $my_init_slave=
   'SET @@global.max_connections = @@global.max_connections + 1';
eval SET @@global.init_slave = $my_init_slave;

# show the data type of the variable
--disable_warnings
DROP TABLE IF EXISTS t1;
CREATE TEMPORARY TABLE t1 AS SELECT @@global.init_slave AS my_column;
--enable_warnings
DESCRIBE t1;
DROP TABLE t1;
#
# check that the new setting of @@global.init_slave becomes immediately visible
eval SELECT @@global.init_slave = $my_init_slave;
--echo Expect 1
# wait for the slave threads have set the global variable.
let $wait_timeout= 90;
let $wait_condition= SELECT @@global.max_connections = @start_max_connections;
--source include/wait_condition_sp.inc
# check that the action in init_slave does not happen immediately
SELECT @@global.max_connections= @start_max_connections;
--echo Expect 1
#
# reset of the server
STOP SLAVE;
--wait_for_slave_to_stop
RESET MASTER;
RESET SLAVE;
START SLAVE;
source include/wait_for_slave_to_start.inc;
#
# wait for the slave threads have set the global variable.
let $wait_timeout= 90;
let $wait_condition= SELECT @@global.max_connections = @start_max_connections + 1;
--source include/wait_condition_sp.inc
# check that the action in init_slave was executed and had the intended effect
SELECT @@global.max_connections = @start_max_connections + 1;
--echo Expect 1
#
# Setting a variable(which is local to a session) and must not be visible
SET @@global.init_slave = "SET @a=5";
#
STOP SLAVE;
--wait_for_slave_to_stop
RESET MASTER;
RESET SLAVE;
START SLAVE;
source include/wait_for_slave_to_start.inc;
#
SHOW VARIABLES LIKE 'init_slave';
# expect NULL
SELECT @a;
--echo Expect NULL
#
# Clean up
SET @@global.max_connections= @start_max_connections;
SET @@global.init_slave= @start_init_slave;
##################################################
# End of functionality Testing for init_slave    #
##################################################