--source include/not_embedded.inc

--echo #
--echo # Variable name : session_track_system_variables
--echo # Scope         : Global & Session
--echo #

--echo # Global - default
SELECT @@global.session_track_system_variables;
--echo # Session - default
SELECT @@session.session_track_system_variables;
--echo

--echo # via INFORMATION_SCHEMA.GLOBAL_VARIABLES
SELECT * FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES WHERE VARIABLE_NAME LIKE 'session_track_system_variables' ORDER BY VARIABLE_NAME;

--echo # via INFORMATION_SCHEMA.SESSION_VARIABLES
SELECT * FROM INFORMATION_SCHEMA.SESSION_VARIABLES WHERE VARIABLE_NAME LIKE 'session_track_system_variables' ORDER BY VARIABLE_NAME;

# Save the global value to be used to restore the original value.
SET @global_saved_tmp =  @@global.session_track_system_variables;
--echo

--echo # Altering global variable's value
SET @@global.session_track_system_variables='autocommit';
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Altering session variable's value
SET @@session.session_track_system_variables='autocommit';
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Variables' values in a new session.
connect (con1,"127.0.0.1",root,,test,$MASTER_MYPORT,);

--echo # Global - expect "autocommit"
SELECT @@global.session_track_system_variables;
--echo
--echo # Session - expect "autocommit"
SELECT @@session.session_track_system_variables;
--echo

--echo # Switching to the default connection.
connection default;

SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Test if DEFAULT is working as expected.
SET @@global.session_track_system_variables = DEFAULT;
SET @@session.session_track_system_variables = DEFAULT;
--echo

SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Variables' values in a new session (con2).
connect (con2,"127.0.0.1",root,,test,$MASTER_MYPORT,);

SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Altering session should not affect global.
SET @@session.session_track_system_variables = 'sql_mode';
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Variables' values in a new session (con3).
connect (con3,"127.0.0.1",root,,test,$MASTER_MYPORT,);

--echo # Altering global should not affect session.
SET @@global.session_track_system_variables = 'sql_mode';
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # Switching to the default connection.
connection default;

--echo # Testing NULL
--error ER_WRONG_VALUE_FOR_VAR
SET @@global.session_track_system_variables = NULL;
--error ER_WRONG_VALUE_FOR_VAR
SET @@session.session_track_system_variables = NULL;

--echo # testing with duplicate entries.
# Lets first set it to some valid value.
SET @@global.session_track_system_variables= "time_zone";
SET @@session.session_track_system_variables= "time_zone";
# Now set with duplicate entries (must pass)
SET @@global.session_track_system_variables= "sql_mode,sql_mode";
SET @@session.session_track_system_variables= "sql_mode,sql_mode";
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # testing ordering
SET @@global.session_track_system_variables= "time_zone,sql_mode";
SET @@session.session_track_system_variables= "time_zone,sql_mode";
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # special values
SET @@global.session_track_system_variables= "*";
SET @@session.session_track_system_variables= "*";
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
SET @@global.session_track_system_variables= "";
SET @@session.session_track_system_variables= "";
SELECT @@global.session_track_system_variables;
SELECT @@session.session_track_system_variables;
--echo

--echo # MDEV-22524 SIGABRT in safe_mutex_unlock with session_track_system_variables and max_relay_log_size.
SET SESSION session_track_system_variables="sql_slave_skip_counter", sql_slave_skip_counter= 0;

--echo # Restoring the original values.
SET @@global.session_track_system_variables = @global_saved_tmp;

--echo # End of tests.