############## mysql-test\t\max_allowed_packet_basic.test ###############
#                                                                             #
# Variable Name: max_allowed_packet                                           #
# Scope: GLOBAL | SESSION                                                     #
# Access Type: Dynamic                                                        #
# Data Type: numeric                                                          #
# Default Value:4194304                                                       #
# Range:1024-1073741824                                                       #
#                                                                             #
#                                                                             #
# Creation Date: 2008-02-07                                                   #
# Author:  Salman                                                             #
#                                                                             #
# Description: Test Cases of Dynamic System Variable max_allowed_packet       #
#              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/load_sysvars.inc

##################################################################
#           START OF max_allowed_packet TESTS                    #
##################################################################


#############################################################
#                 Save initial value                        #
#############################################################

SET @start_global_value = @@global.max_allowed_packet;
SELECT @start_global_value;

# give a known value to @@session.max_allowed_packet by assigning to
# @@global and setting up a new connection (for deterministic result
# file diffing)
SET @@global.max_allowed_packet = DEFAULT;
connect (conn1, localhost, root,,);



--echo '#--------------------FN_DYNVARS_070_01-------------------------#'
##################################################################
#     Display the DEFAULT value of max_allowed_packet            #
##################################################################

SET @@global.max_allowed_packet = 1000;
SET @@global.max_allowed_packet = DEFAULT;
SELECT @@global.max_allowed_packet;

--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 20000;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = DEFAULT;
SELECT @@session.max_allowed_packet;


--echo '#--------------------FN_DYNVARS_070_02-------------------------#'
##################################################################
#     Check the DEFAULT value of max_allowed_packet              #
##################################################################

SET @@global.max_allowed_packet = DEFAULT;
SELECT @@global.max_allowed_packet = 4194304;


--echo '#--------------------FN_DYNVARS_070_03-------------------------#'
############################################################################
# Change the value of max_allowed_packet to a valid value for GLOBAL Scope #
############################################################################

SET @@global.max_allowed_packet = 1024;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = 1025;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = 1073741824;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = 1073741823;
SELECT @@global.max_allowed_packet;

--echo '#--------------------FN_DYNVARS_070_04-------------------------#'
#############################################################################
# Change the value of max_allowed_packet to a valid value for SESSION Scope #
#############################################################################
 
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 1024;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 1025;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 65535;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 1073741824;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 1073741823;
SELECT @@session.max_allowed_packet;


--echo '#------------------FN_DYNVARS_070_05-----------------------#'
##############################################################
# Change the value of max_allowed_packet to an invalid value #
##############################################################

SET @@global.max_allowed_packet = 0;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = -1024;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = 1023;
SELECT @@global.max_allowed_packet;
SET @@global.max_allowed_packet = 10737418241;
SELECT @@global.max_allowed_packet;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.max_allowed_packet = 65530.34;
SELECT @@global.max_allowed_packet;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.max_allowed_packet = test;
SELECT @@global.max_allowed_packet;

--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 0;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 1023;
SELECT @@session.max_allowed_packet;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = -2;
SELECT @@session.max_allowed_packet;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.max_allowed_packet = 65530.34;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 10737418241;
SELECT @@session.max_allowed_packet;

--Error ER_WRONG_TYPE_FOR_VAR
SET @@session.max_allowed_packet = test;
SELECT @@session.max_allowed_packet;


--echo '#------------------FN_DYNVARS_070_06-----------------------#'
####################################################################
#   Check if the value in GLOBAL Table matches value in variable   #
####################################################################


SELECT @@global.max_allowed_packet = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='max_allowed_packet';

--echo '#------------------FN_DYNVARS_070_07-----------------------#'
####################################################################
#  Check if the value in SESSION Table matches value in variable   #
####################################################################

SELECT @@session.max_allowed_packet = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
WHERE VARIABLE_NAME='max_allowed_packet';


--echo '#------------------FN_DYNVARS_070_08-----------------------#'
####################################################################
#     Check if TRUE and FALSE values can be used on variable       #
####################################################################

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


--echo '#---------------------FN_DYNVARS_070_09----------------------#'
#################################################################################
#  Check if accessing variable with and without GLOBAL point to same variable   #
#################################################################################

SET @@global.max_allowed_packet = 2048;
SELECT @@max_allowed_packet = @@global.max_allowed_packet;


--echo '#---------------------FN_DYNVARS_070_10----------------------#'
########################################################################################################
#    Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable  #
########################################################################################################

--Error ER_VARIABLE_IS_READONLY
SET @@max_allowed_packet = 100000;
SELECT @@max_allowed_packet = @@local.max_allowed_packet;
SELECT @@local.max_allowed_packet = @@session.max_allowed_packet;


--echo '#---------------------FN_DYNVARS_070_11----------------------#'
#############################################################################
#   Check if max_allowed_packet can be accessed with and without @@ sign    #
#############################################################################

--Error ER_VARIABLE_IS_READONLY
SET max_allowed_packet = 1024;
SELECT @@max_allowed_packet;
--Error ER_UNKNOWN_TABLE
SELECT local.max_allowed_packet;
--Error ER_UNKNOWN_TABLE
SELECT session.max_allowed_packet;
--Error ER_BAD_FIELD_ERROR
SELECT max_allowed_packet = @@session.max_allowed_packet;


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

connection default;
SET @@global.max_allowed_packet = @start_global_value;
SELECT @@global.max_allowed_packet;
SELECT @@session.max_allowed_packet;


#######################################################
#                 END OF max_allowed_packet TESTS     #
#######################################################

