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mariadb/mysql-test/suite/sys_vars/t/max_allowed_packet_basic.test

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############## mysql-test\t\max_allowed_packet_basic.test ###############
# #
# Variable Name: max_allowed_packet #
# Scope: GLOBAL | SESSION #
# Access Type: Dynamic #
# Data Type: numeric #
# Default Value:1048576 #
# 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_NO_DEFAULT
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 = 1048576;
--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;
--echo : 'Bug# 34841: "Invalid values are coming in variable on assigning valid value';
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_PARSE_ERROR
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_PARSE_ERROR
SET @@session.max_allowed_packet = 65530.34.;
--Error ER_VARIABLE_IS_READONLY
SET @@session.max_allowed_packet = 10737418241;
SELECT @@session.max_allowed_packet;
--echo 'Bug # 34837: Errors are not coming on assigning invalid values to variable';
--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 #
#######################################################
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