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This is covered in mysql-test/t/variables.test. There is no sense to test this for every individual variables. This is to reduce the coming soon patch for ROW-type routine variables, which will change the error from ER_PARSE_ERROR to a new error "unknown structured variable".
175 lines
7.4 KiB
Text
175 lines
7.4 KiB
Text
############## mysql-test\t\max_connections_basic.test ###############
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# #
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# Variable Name: max_connections #
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# Scope: GLOBAL #
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# Access Type: Dynamic #
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# Data Type: numeric #
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# Default Value:151 #
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# Range: 1-100000 #
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# #
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# #
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# Creation Date: 2008-02-07 #
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# Author: Salman #
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# #
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# Description: Test Cases of Dynamic System Variable max_connections #
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# that checks the behavior of this variable in the following ways#
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# * Default Value #
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# * Valid & Invalid values #
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# * Scope & Access method #
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# * Data Integrity #
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# #
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# Reference: http://dev.mysql.com/doc/refman/5.1/en/ #
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# server-system-variables.html #
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# #
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###############################################################################
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--source include/load_sysvars.inc
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###############################################################
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# START OF max_connections TESTS #
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###############################################################
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###################################################################
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# Saving initial value of max_connections in a temporary variable #
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###################################################################
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SET @start_value = @@global.max_connections;
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SELECT @start_value;
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--echo '#--------------------FN_DYNVARS_074_01------------------------#'
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##################################################################
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# Display the DEFAULT value of max_connections #
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##################################################################
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SET @@global.max_connections = 5000;
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SET @@global.max_connections = DEFAULT;
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SELECT @@global.max_connections;
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--echo '#---------------------FN_DYNVARS_074_02-------------------------#'
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###############################################
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# Verify default value of variable #
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###############################################
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SET @@global.max_connections = @start_value;
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SELECT @@global.max_connections = 151;
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--echo '#--------------------FN_DYNVARS_074_03------------------------#'
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##################################################################
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# Change the value of max_connections to a valid value #
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##################################################################
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SET @@global.max_connections = 100000;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 99999;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 65536;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 1;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 2;
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SELECT @@global.max_connections;
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--echo '#--------------------FN_DYNVARS_074_04-------------------------#'
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#####################################################################
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# Change the value of max_connections to invalid value #
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#####################################################################
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SET @@global.max_connections = -1;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 100000000000;
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SELECT @@global.max_connections;
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--Error ER_WRONG_TYPE_FOR_VAR
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SET @@global.max_connections = 10000.01;
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SELECT @@global.max_connections;
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SET @@global.max_connections = -1024;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 0;
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SELECT @@global.max_connections;
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SET @@global.max_connections = 100001;
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SELECT @@global.max_connections;
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--Error ER_WRONG_TYPE_FOR_VAR
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SET @@global.max_connections = ON;
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SELECT @@global.max_connections;
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--Error ER_WRONG_TYPE_FOR_VAR
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SET @@global.max_connections = 'test';
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SELECT @@global.max_connections;
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--echo '#-------------------FN_DYNVARS_074_05----------------------------#'
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#####################################################################
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# Test if accessing session max_connections gives error #
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#####################################################################
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--Error ER_GLOBAL_VARIABLE
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SET @@session.max_connections = 4096;
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--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
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SELECT @@session.max_connections;
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--echo '#----------------------FN_DYNVARS_074_06------------------------#'
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##############################################################################
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# Check if the value in GLOBAL & SESSION Tables matches values in variable #
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##############################################################################
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SELECT @@global.max_connections = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
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WHERE VARIABLE_NAME='max_connections';
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SELECT @@max_connections = VARIABLE_VALUE
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FROM INFORMATION_SCHEMA.SESSION_VARIABLES
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WHERE VARIABLE_NAME='max_connections';
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--echo '#---------------------FN_DYNVARS_074_07----------------------#'
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###################################################################
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# Check if TRUE and FALSE values can be used on variable #
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###################################################################
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SET @@global.max_connections = TRUE;
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SELECT @@global.max_connections;
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SET @@global.max_connections = FALSE;
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SELECT @@global.max_connections;
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--echo '#---------------------FN_DYNVARS_074_08----------------------#'
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########################################################################################################
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# Check if accessing variable with SESSION,LOCAL and without SCOPE points to same session variable #
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########################################################################################################
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SET @@global.max_connections = 5000;
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SELECT @@max_connections = @@global.max_connections;
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--echo '#---------------------FN_DYNVARS_074_09----------------------#'
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##########################################################################
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# Check if max_connections can be accessed with and without @@ sign #
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##########################################################################
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--Error ER_GLOBAL_VARIABLE
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SET max_connections = 6000;
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SELECT @@max_connections;
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--Error ER_UNKNOWN_TABLE
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SELECT local.max_connections;
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--Error ER_UNKNOWN_TABLE
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SELECT global.max_connections;
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--Error ER_BAD_FIELD_ERROR
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SELECT max_connections = @@session.max_connections;
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##############################
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# Restore initial value #
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##############################
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SET @@global.max_connections = @start_value;
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SELECT @@global.max_connections;
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##################################################################
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# END OF max_connections TESTS #
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##################################################################
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