################### suite/perfschema/t/show_coverage.test ######################
#                                                                              #
# Testcases to increase DGCOV coverage of the status and system variable       #
# implementation in the Performance Schema.                                    #
#                                                                              #
################################################################################
--source include/have_perfschema.inc
--source include/not_embedded.inc
--source include/no_protocol.inc
--source include/count_sessions.inc

--echo #
--echo # TEST 1
--echo # Handling of SHOW STATUS/VARIABLES ... WHERE
--echo #
SHOW STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW VARIABLES WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";

--echo #
--echo # TEST 2
--echo # CREATE..SELECT -- Expect correct ER_WARN_DEPRECATED_SYNTAX
--echo #
USE test;
CREATE TABLE t0 SELECT * FROM information_schema.global_status WHERE variable_name = 'COM_SELECT';
DROP TABLE t0;

--echo #
--echo # TEST 3
--echo # Select status and system variable tables using ORDER BY to exercise the
--echo # rnd_pos() method
--echo #
use performance_schema;
--disable_result_log
select * from global_variables order by variable_name;
select * from variables_by_thread order by variable_name;
select * from session_variables order by variable_name;
select * from global_status order by variable_name;
select * from session_status order by variable_name;
select * from status_by_thread order by variable_name;
select * from status_by_user order by variable_name;
select * from status_by_host order by variable_name;
select * from status_by_account order by variable_name;
--enable_result_log

--echo #
--echo # TEST 4
--echo # Handling of SHOW STATUS/VARIABLES ... WHERE
--echo #
SHOW STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW GLOBAL STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW SESSION STATUS WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW VARIABLES WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW GLOBAL VARIABLES WHERE VARIABLE_NAME LIKE "foo";
--echo #
SHOW SESSION VARIABLES WHERE VARIABLE_NAME LIKE "foo";

--echo #
--echo # TEST 5
--echo # Confirm FLUSH STATUS resets counters for all threads.
--echo #
--echo #
--echo # Create a new connection
--connect(con1, localhost, root,,)
--echo #
--echo # Record thread id
let $thread_id= `SELECT THREAD_ID FROM performance_schema.threads WHERE PROCESSLIST_ID = CONNECTION_ID()`;
--echo #
--echo # Increase bytes_received for new connection
USE test;
SHOW TABLES;
--connection default
USE performance_schema;
--disable_query_log
eval SELECT $thread_id INTO @thread_id;
--enable_query_log

--echo #
--echo # Record bytes_received for other connection
SELECT variable_value FROM status_by_thread
  WHERE variable_name = "bytes_received" and thread_id = @thread_id INTO @bytes_before;
--echo #
--echo # Reset status counters
FLUSH STATUS;
--echo #
--echo # Record bytes_received after reset
SELECT variable_value FROM status_by_thread
  WHERE variable_name = "bytes_received" and thread_id = @thread_id INTO @bytes_after;
--echo #
--echo # Expect bytes_before > bytes_after
SELECT @bytes_before > @bytes_after AS 'Expect 1';
--echo #
--echo # Expect bytes_after is zero
SELECT @bytes_after AS 'Expect 0';

disconnect con1;
--source include/wait_until_count_sessions.inc


--echo #
--echo # TEST 6
--echo #
--echo # Bug#28291258 FLUSH STATUS ADDS TWICE TO GLOBAL VALUES
--echo #

--echo #
--echo # Default connection
--let $initial_global_value = query_get_value(SHOW GLOBAL STATUS LIKE 'Slow_queries', Value, 1)

--source include/count_sessions.inc

--echo #
--echo # First connection
--connect (con1, localhost, root,,)

## Global value requested from the first session must not change
--let $current_global_value = query_get_value(SHOW GLOBAL STATUS LIKE 'Slow_queries', Value, 1)
--let $assert_cond = $current_global_value - $initial_global_value = 0
--let $assert_text = Global value requested from the first session must not change
--source include/assert.inc

--echo #
--echo # Generate a slow query
--echo #
SET long_query_time = 2;
SELECT SLEEP(4);
SET long_query_time = @@global.long_query_time;
--echo #

## Global value requested from the first session after SLEEP() must increase by 1
--let $current_global_value = query_get_value(SHOW GLOBAL STATUS LIKE 'Slow_queries', Value, 1)
--let $first_session_value = query_get_value(SHOW SESSION STATUS LIKE 'Slow_queries', Value, 1)
--let $assert_cond = $current_global_value - $initial_global_value = 1
--let $assert_text = Global value requested from the first session after SLEEP() must increase by 1
--source include/assert.inc
--let $assert_cond = $first_session_value = 1
--let $assert_text = First session value must increase by 1
--source include/assert.inc

--connection default
--disconnect con1
--source include/wait_until_count_sessions.inc

--echo #
--echo # Default connection
--connection default

## Global value requested from the default session after DISCONNECT must remain the same
--let $current_global_value = query_get_value(SHOW GLOBAL STATUS LIKE 'Slow_queries', Value, 1)
--let $default_session_value = query_get_value(SHOW SESSION STATUS LIKE 'Slow_queries', Value, 1)
--let $assert_cond = $current_global_value - $initial_global_value = 1
--let $assert_text = Global value requested from the default session after DISCONNECT must remain the same
--source include/assert.inc

## Default session value must remain zero
--let $assert_cond = $default_session_value = 0
--let $assert_text = Default session value must remain zero
--source include/assert.inc

--echo #
FLUSH STATUS;
--echo #

## Global value requested from the default session after FLUSH must remain the same
--let $current_global_value = query_get_value(SHOW GLOBAL STATUS LIKE 'Slow_queries', Value, 1)
--let $default_session_value = query_get_value(SHOW SESSION STATUS LIKE 'Slow_queries', Value, 1)
--let $assert_cond = $current_global_value - $initial_global_value = 1
--let $assert_text = Global value requested from the default session after FLUSH must remain the same
--source include/assert.inc

## Default session value after FLUSH must remain zero
--let $assert_cond = $default_session_value = 0
--let $assert_text = Default session value after FLUSH must remain zero
--source include/assert.inc