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Current File : /www/server/mysql/src/mysql-test/suite/sys_vars/t/tx_isolation_basic.test
################# mysql-test\t\tx_isolation_basic.test ########################
#                                                                             #
# Variable Name: tx_isolation                                                 #
# Scope: GLOBAL | SESSION                                                     #
# Access Type: Dynamic                                                        #
# Data Type: enumeration                                                      #
# Default Value: REPEATABLE-READ                                              #
# Valid Values: READ-UNCOMMITTED, READCOMMITTED, REPEATABLE-READ,SERIALIZABLE #
#                                                                             #
#                                                                             #
# Creation Date: 2008-02-07                                                   #
# Author:  Rizwan                                                             #
#                                                                             #
# Description: Test Cases of Dynamic System Variable tx_isolation             #
#              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 tx_isolation TESTS                       #
######################################################################## 


#########################################################################
#     Saving initial value of tx_isolation in a temporary variable      #
#########################################################################

SET @global_start_value = @@global.tx_isolation;
SELECT @global_start_value;

SET @session_start_value = @@session.tx_isolation;
SELECT @session_start_value;

--echo '#--------------------FN_DYNVARS_183_01------------------------#'
####################################################################
#                    Display the DEFAULT value of tx_isolation     #
####################################################################

SET @@global.tx_isolation = 'READ-UNCOMMITTED';
SET @@global.tx_isolation = DEFAULT;
SELECT @@global.tx_isolation;

SET @@session.tx_isolation = DEFAULT;
SELECT @@session.tx_isolation;

--echo '#---------------------FN_DYNVARS_183_02-------------------------#'
######################################################### 
#      Check if NULL or empty value is accepeted        #
######################################################### 

--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = NULL;

--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = '';

--Error ER_WRONG_VALUE_FOR_VAR
SET @@session.tx_isolation = NULL;

--Error ER_WRONG_VALUE_FOR_VAR
SET @@session.tx_isolation = '';

--echo '#--------------------FN_DYNVARS_183_03------------------------#'
#####################################################################
#              Change the value of tx_isolation to a valid value    #
#####################################################################

SET @@global.tx_isolation = 'READ-UNCOMMITTED';
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 'read-COMMITTED';
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 'REPEATABLE-READ';
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 'SERIALIZable';
SELECT @@global.tx_isolation;


SET @@session.tx_isolation = 'READ-UNCOMMITTED';
SELECT @@session.tx_isolation;

SET @@session.tx_isolation = 'READ-COMMITTED';
SELECT @@session.tx_isolation;

SET @@session.tx_isolation = 'REPEATABLE-READ';
SELECT @@session.tx_isolation;

SET @@session.tx_isolation = 'serializable';
SELECT @@session.tx_isolation;


--echo '#--------------------FN_DYNVARS_183_04-------------------------#'
#######################################################################
#               Change the value of tx_isolation to invalid value     #
#######################################################################

# for global scope
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = -1;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = READUNCOMMITTED;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = 'REPEATABLE';
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = OFF;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = ON;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@global.tx_isolation = 'NON-SERIALIZABLE';

# for session scope

--Error ER_WRONG_VALUE_FOR_VAR
SET @@tx_isolation = -1;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@tx_isolation = READUNCOMMITTED;
--Error ER_WRONG_VALUE_FOR_VAR
SET @@tx_isolation = 'REPEATABLE';
--Error ER_WRONG_VALUE_FOR_VAR
SET @@tx_isolation = 'NONE';
--Error ER_WRONG_VALUE_FOR_VAR
SET @@tx_isolation = 'ALL';

--echo '#-------------------FN_DYNVARS_183_05----------------------------#'
######################################################################### 
#     Check if the value in session Table matches value in variable     #
#########################################################################

--disable_warnings
SELECT @@session.tx_isolation = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.SESSION_VARIABLES 
WHERE VARIABLE_NAME='tx_isolation';
--enable_warnings

--echo '#----------------------FN_DYNVARS_183_06------------------------#'
######################################################################### 
#     Check if the value in GLOBAL Table matches value in variable      #
#########################################################################

--disable_warnings
SELECT @@global.tx_isolation = VARIABLE_VALUE 
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='tx_isolation';
--enable_warnings


--echo '#---------------------FN_DYNVARS_183_07-------------------------#'
################################################################### 
#        Check if numbers can be used on variable                 #
################################################################### 

# test if variable accepts 0,1,2
SET @@global.tx_isolation = 0;
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 1;
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 2;
SELECT @@global.tx_isolation;

SET @@global.tx_isolation = 3;
SELECT @@global.tx_isolation;

--Error ER_WRONG_TYPE_FOR_VAR
SET @@global.tx_isolation = 0.4;

--echo '#---------------------FN_DYNVARS_183_08----------------------#'
################################################################### 
#      Check if TRUE and FALSE values can be used on variable     #
################################################################### 

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

--echo '#---------------------FN_DYNVARS_183_09----------------------#'
######################################################################## 
# Check if tx_isolation can be accessed with and without @@ sign       #
########################################################################

SET tx_isolation = 'REPEATABLE-READ';

--Error ER_PARSE_ERROR
SET session.tx_isolation = 'REPEATABLE-READ';
--Error ER_PARSE_ERROR
SET global.tx_isolation = 'REPEATABLE-READ';
#using SET SESSION|GLOBAL syntax
SET session tx_isolation = 'REPEATABLE-READ';
SELECT @@tx_isolation;

SET global tx_isolation = 'REPEATABLE-READ';
SELECT @@global.tx_isolation;

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

SET @@global.tx_isolation = @global_start_value;
SELECT @@global.tx_isolation;

SET @@session.tx_isolation = @session_start_value;
SELECT @@session.tx_isolation;

####################################################################
#                    END OF tx_isolation TESTS                     #
####################################################################


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