mariadb/mysql-test/suite/sys_vars/t/max_connections_basic.test
Monty 9cba6c5aa3 Updated mtr files to support different compiled in options
This allows one to run the test suite even if any of the following
options are changed:
- character-set-server
- collation-server
- join-cache-level
- log-basename
- max-allowed-packet
- optimizer-switch
- query-cache-size and query-cache-type
- skip-name-resolve
- table-definition-cache
- table-open-cache
- Some innodb options
etc

Changes:
- Don't print out the value of system variables as one can't depend on
  them to being constants.
- Don't set global variables to 'default' as the default may not
  be the same as the test was started with if there was an additional
  option file. Instead save original value and reset it at end of test.
- Test that depends on the latin1 character set should include
  default_charset.inc or set the character set to latin1
- Test that depends on the original optimizer switch, should include
  default_optimizer_switch.inc
- Test that depends on the value of a specific system variable should
  set it in the test (like optimizer_use_condition_selectivity)
- Split subselect3.test into subselect3.test and subselect3.inc to
  make it easier to set and reset system variables.
- Added .opt files for test that required specfic options that could
  be changed by external configuration files.
- Fixed result files in rockdsb & tokudb that had not been updated for
  a while.
2019-09-01 19:17:35 +03:00

177 lines
7.5 KiB
Text

############## mysql-test\t\max_connections_basic.test ###############
# #
# Variable Name: max_connections #
# Scope: GLOBAL #
# Access Type: Dynamic #
# Data Type: numeric #
# Default Value:151 #
# Range: 1-100000 #
# #
# #
# Creation Date: 2008-02-07 #
# Author: Salman #
# #
# Description: Test Cases of Dynamic System Variable max_connections #
# 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_connections TESTS #
###############################################################
###################################################################
# Saving initial value of max_connections in a temporary variable #
###################################################################
SET @start_value = @@global.max_connections;
SELECT @start_value > 0;
--echo '#--------------------FN_DYNVARS_074_01------------------------#'
##################################################################
# Display the DEFAULT value of max_connections #
##################################################################
SET @@global.max_connections = @start_value+1;
SET @@global.max_connections = DEFAULT;
SELECT @@global.max_connections <> @start_value+1;
--echo '#---------------------FN_DYNVARS_074_02-------------------------#'
###############################################
# Verify default value of variable #
###############################################
SET @@global.max_connections = @start_value;
SELECT @@global.max_connections = @start_value;
--echo '#--------------------FN_DYNVARS_074_03------------------------#'
##################################################################
# Change the value of max_connections to a valid value #
##################################################################
SET @@global.max_connections = 100000;
SELECT @@global.max_connections;
SET @@global.max_connections = 99999;
SELECT @@global.max_connections;
SET @@global.max_connections = 65536;
SELECT @@global.max_connections;
SET @@global.max_connections = 1;
SELECT @@global.max_connections;
SET @@global.max_connections = 2;
SELECT @@global.max_connections;
--echo '#--------------------FN_DYNVARS_074_04-------------------------#'
#####################################################################
# Change the value of max_connections to invalid value #
#####################################################################
SET @@global.max_connections = -1;
SELECT @@global.max_connections;
SET @@global.max_connections = 100000000000;
SELECT @@global.max_connections;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.max_connections = 10000.01;
SELECT @@global.max_connections;
SET @@global.max_connections = -1024;
SELECT @@global.max_connections;
SET @@global.max_connections = 0;
SELECT @@global.max_connections;
SET @@global.max_connections = 100001;
SELECT @@global.max_connections;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.max_connections = ON;
SELECT @@global.max_connections;
--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.max_connections = 'test';
SELECT @@global.max_connections;
--echo '#-------------------FN_DYNVARS_074_05----------------------------#'
#####################################################################
# Test if accessing session max_connections gives error #
#####################################################################
--Error ER_GLOBAL_VARIABLE
SET @@session.max_connections = 4096;
--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.max_connections;
--echo '#----------------------FN_DYNVARS_074_06------------------------#'
##############################################################################
# Check if the value in GLOBAL & SESSION Tables matches values in variable #
##############################################################################
SELECT @@global.max_connections = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='max_connections';
SELECT @@max_connections = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.SESSION_VARIABLES
WHERE VARIABLE_NAME='max_connections';
--echo '#---------------------FN_DYNVARS_074_07----------------------#'
###################################################################
# Check if TRUE and FALSE values can be used on variable #
###################################################################
SET @@global.max_connections = TRUE;
SELECT @@global.max_connections;
SET @@global.max_connections = FALSE;
SELECT @@global.max_connections;
--echo '#---------------------FN_DYNVARS_074_08----------------------#'
########################################################################################################
# Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable #
########################################################################################################
SET @@global.max_connections = 5000;
SELECT @@max_connections = @@global.max_connections;
--echo '#---------------------FN_DYNVARS_074_09----------------------#'
##########################################################################
# Check if max_connections can be accessed with and without @@ sign #
##########################################################################
--Error ER_GLOBAL_VARIABLE
SET max_connections = 6000;
SELECT @@max_connections;
--Error ER_PARSE_ERROR
SET local.max_connections = 7000;
--Error ER_UNKNOWN_TABLE
SELECT local.max_connections;
--Error ER_PARSE_ERROR
SET global.max_connections = 8000;
--Error ER_UNKNOWN_TABLE
SELECT global.max_connections;
--Error ER_BAD_FIELD_ERROR
SELECT max_connections = @@session.max_connections;
##############################
# Restore initial value #
##############################
SET @@global.max_connections = @start_value;
##################################################################
# END OF max_connections TESTS #
##################################################################