File: password_history_basic.test

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###############################################################################
#                                                                             #
# Variable name: password_history                                             #
# Scope        : GLOBAL                                                       #
# Access Type  : Dynamic                                                      #
# Data type    : Integer                                                      #
# Default value: 0                                                            #
# Minimum Value: 0                                                            #
# Maximum value: 4294967295                                                   #
#                                                                             #
#                                                                             #
# Creation Date: 29-Nov-2017                                                  #
# Author       : Mohit Joshi                                                  #
#                                                                             #
# Description  : Test case added for dynamic server variable password_history #
# We check the behaviour of this variable for:                                #
#           * Default values                                                  #
#           * Valid and invalid values                                        #
#           * Scope and access method                                         #
#                                                                             #
# References: Reference: http://dev.mysql.com/doc/refman/8.0/en/              #
# server-system-variables.html                                                #
#                                                                             #
###############################################################################

################################################################
# Saving initial values of password_history variable in        #
# a temporary variable                                         #
################################################################

SET @password_history_save = @@global.password_history;
SELECT @password_history_save;

################################################################
# Display the DEFAULT value of password_history                #
################################################################

--echo Default value must be 0 for global scope
SET @@global.password_history = 1;
SET @@global.password_history = DEFAULT;
SELECT @@global.password_history;

--error ER_GLOBAL_VARIABLE
SET @@session.password_history = 2;
--error ER_GLOBAL_VARIABLE
SET @@session.password_history = DEFAULT;
--error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT @@session.password_history;

################################################################
# Check if NULL or empty value is accepted                     #
################################################################

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = NULL;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = '';

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = ' ';

--error ER_GLOBAL_VARIABLE
SET @@session.password_history = NULL;

--error ER_GLOBAL_VARIABLE
SET @@session.password_history = '';

--error ER_GLOBAL_VARIABLE
SET @@session.password_history = ' ';

##############################################################################
# Change the value of password_history to a valid value for GLOBAL scope     #
##############################################################################

SET @@global.password_history = 0;
SELECT @@global.password_history;

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

SET @@global.password_history = TRUE;
SELECT @@global.password_history;

SET @@global.password_history = FALSE;
SELECT @@global.password_history;

SET @@global.password_history = 4294967295;
SELECT @@global.password_history;

SET @@global.password_history = DEFAULT;
SELECT @@global.password_history;

#############################################################################
# Change the value of password_history to an invalid value for GLOBAL scope #
#############################################################################

SET @@global.password_history = -1;
SELECT @@global.password_history;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = 'ABC';
SELECT @@global.password_history;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = ON;
SELECT @@global.password_history;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = 'OFF';
SELECT @@global.password_history;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = 2.14;
SELECT @@global.password_history;

--error ER_WRONG_TYPE_FOR_VAR
SET @@global.password_history = NONE;
SELECT @@global.password_history;

SET @@global.password_history = -4294967295;
SELECT @@global.password_history;

SET @@global.password_history = 4294967296;
SELECT @@global.password_history;

#############################################################################
#     Check if the value in GLOBAL Table matches value in variable          #
#############################################################################

--echo Must return 1
--disable_warnings
SELECT @@global.password_history = VARIABLE_VALUE
FROM performance_schema.global_variables
WHERE VARIABLE_NAME='password_history';
--enable_warnings

###############################################################################
# Check if password_history variable can be accessed with and without @@ sign #
###############################################################################

SET GLOBAL password_history = 1;
SET @@global.password_history = 1;

--error ER_PARSE_ERROR
SET global.password_history = 1;

--error ER_GLOBAL_VARIABLE
SET @@password_history = 1;

--error ER_GLOBAL_VARIABLE
SET password_history = 1;

--error ER_UNKNOWN_TABLE
SELECT global.password_history;

--error ER_BAD_FIELD_ERROR
SELECT GLOBAL password_history;

SELECT @@password_history;

#############################################################################
#       Restoring the original value of password_history variable           #
#############################################################################

SET @@global.password_history = @password_history_save;