###############################################################################
#                                                                             #
# Variable Name: table_open_cache                                             #
# Scope: Global                                                               #
# Access Type: Dynamic                                                         #
# Data Type: numeric                                                          #
#                                                                             #
#                                                                             #
# Creation Date: 2012-08-31                                                   #
# Author : Tanjot Singh Uppal                                                 #
#                                                                             #
#                                                                             #
# Description:Test Cases of Dynamic System Variable table_open_cache           #
#             that checks the behavior of this variable in the following ways #
#              * Value Check                                                  #
#              * Scope Check                                                  #
#              * Functionality Check                                          #
#              * Accessability Check                                          #
#                                                                             #               
# This test does not perform the crash recovery on this variable              # 
# For crash recovery test on default change please run the ibtest             #
###############################################################################

-- source include/have_innodb.inc
-- source include/not_embedded.inc
-- source include/have_innodb_16k.inc

if (`select $PS_PROTOCOL != 0`)
{
   --skip Test requires: ps-protocol disabled
}



echo '#________________________VAR_05_table_open_cache__________________#'
echo '##'
--echo '#---------------------WL6372_VAR_5_01----------------------#'
####################################################################
#   Checking default value                                         #
####################################################################
SELECT COUNT(@@GLOBAL.table_open_cache);
--echo 1 Expected

SELECT IF(@@open_files_limit < 5000, 2000, @@GLOBAL.table_open_cache);
--echo 2000 Expected


--echo '#---------------------WL6372_VAR_5_02----------------------#'
#################################################################################
# Checking the Default value post starting the server with other value          #
#################################################################################
--echo # Restart server with table_open_cache 1

let $restart_file= $MYSQLTEST_VARDIR/tmp/mysqld.1.expect;
--exec echo "wait" > $restart_file
--shutdown_server 10
--source include/wait_until_disconnected.inc
-- exec echo "restart:--table_open_cache=1  " > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
-- enable_reconnect
-- source include/wait_until_connected_again.inc

SELECT @@GLOBAL.table_open_cache;
--echo 1 Expected

SET @@GLOBAL.table_open_cache=DEFAULT;
SELECT @@GLOBAL.table_open_cache;
--echo 2000 Expected


--echo '#---------------------WL6372_VAR_5_03----------------------#'
####################################################################
#   Checking Value can be set - Dynamic                            #
####################################################################

--error ER_GLOBAL_VARIABLE
SET @@local.table_open_cache=1;
--echo Expected error 'Global variable'

--error ER_GLOBAL_VARIABLE
SET @@session.table_open_cache=1;
--echo Expected error 'Global variable'

SET @@GLOBAL.table_open_cache=1;
SET @@GLOBAL.table_open_cache=DEFAULT;


SELECT @@GLOBAL.table_open_cache;
--echo 2000 Expected

--echo '#---------------------WL6372_VAR_5_04----------------------#'
#################################################################
# Check if the value in GLOBAL Table matches value in variable  #
#################################################################
SELECT @@GLOBAL.table_open_cache = VARIABLE_VALUE
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES
WHERE VARIABLE_NAME='table_open_cache';
--echo 1 Expected

SELECT COUNT(@@GLOBAL.table_open_cache);
--echo 1 Expected

SELECT COUNT(VARIABLE_VALUE)
FROM INFORMATION_SCHEMA.GLOBAL_VARIABLES 
WHERE VARIABLE_NAME='table_open_cache';
--echo 1 Expected



--echo '#---------------------WL6372_VAR_5_05----------------------#'
################################################################################
#  Checking Variable Scope                                                     #
################################################################################
SELECT @@table_open_cache = @@GLOBAL.table_open_cache;
--echo 1 Expected

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@local.table_open_cache);
--echo Expected error 'Variable is a GLOBAL variable'

--Error ER_INCORRECT_GLOBAL_LOCAL_VAR
SELECT COUNT(@@SESSION.table_open_cache);
--echo Expected error 'Variable is a GLOBAL variable'

SELECT COUNT(@@GLOBAL.table_open_cache);
--echo 1 Expected

--Error ER_BAD_FIELD_ERROR
SELECT table_open_cache = @@SESSION.table_open_cache;
--echo Expected error 'Unknown column table_open_cache in field list'



--echo '#---------------------WL6372_VAR_5_06----------------------#'
###############################################################################
# Checking the /Var  directory size                                           #
###############################################################################
-- source include/vardir_size_check.inc
--echo TRUE Expected

--echo '#---------------------WL6372_VAR_5_07----------------------#'
#################################################################################
# Checking the size of table cache functionality                                #
#################################################################################
--echo # create 3 tables and insert 1 row each
--disable_warnings
DROP TABLE IF EXISTS tab1;
DROP TABLE IF EXISTS tab2;
DROP TABLE IF EXISTS tab3;
--enable_warnings

let $i = 1;

let $table = tab1;
--source include/create_table.inc
--source include/Load_data.inc

let $table = tab2;
--source include/create_table.inc
--source include/Load_data.inc

let $table = tab3;
--source include/create_table.inc
--source include/Load_data.inc
flush tables;
flush status;
set @@GLOBAL.table_open_cache=2;
--echo # open two tables

select 1 from tab1;
--echo 1 Expected

select 1 from tab2;
--echo 1 Expected

set @opened_tables = (select variable_value from information_schema.session_status where variable_name ='Opened_tables');
set @open_cache_hits = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits');
set @open_cache_miss = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses');
set @open_cache_overflow = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows');

--echo # table_open_cache hit 1
select 1 from tab1;
--echo 1 Expected

--echo # table_open_cache hit 2
select 1 from tab2;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Opened_tables') = @opened_tables;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits') = @open_cache_hits + 2;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses') = @open_cache_miss;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows') = @open_cache_overflow;
--echo 1 Expected

--echo # open third table
select 1 from tab3;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Opened_tables') = @opened_tables + 1;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits') = @open_cache_hits + 2;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses') = @open_cache_miss + 1;
--echo 1 Expected
select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows') = @open_cache_overflow + 1;
--echo 1 Expected

flush status;

set @global_opened_tables = (select variable_value from information_schema.global_status where variable_name ='Opened_tables');
set @global_open_cache_hits = (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_hits');
set @global_open_cache_miss = (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_misses');
set @global_open_cache_overflow = (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_overflows');


--echo # opening table 2 from another client session
connect (con1,localhost,root,,);

set @opened_tables = (select variable_value from information_schema.session_status where variable_name ='Opened_tables');
set @open_cache_hits = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits');
set @open_cache_miss = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses');
set @open_cache_overflow = (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows');

select 1 from tab2;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Opened_tables') = @opened_tables;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits') = @open_cache_hits + 1;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses') = @open_cache_miss;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows') = @open_cache_overflow;
--echo 1 Expected

flush status;

connection default;

select (select variable_value from information_schema.global_status where variable_name ='Opened_tables') = @global_opened_tables;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_hits') = @global_open_cache_hits + 1;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_misses') = @global_open_cache_miss;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_overflows') = @global_open_cache_overflow;
--echo 1 Expected


connection con1;

select 1 from tab1;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Opened_tables') = @opened_tables + 1;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_hits') = @open_cache_hits;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_misses') = @open_cache_miss + 1;
--echo 1 Expected

select (select variable_value from information_schema.session_status where variable_name ='Table_open_cache_overflows') = @open_cache_overflow + 1;

flush status;
connection default;

select (select variable_value from information_schema.global_status where variable_name ='Opened_tables') = @global_opened_tables + 1;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_hits') = @global_open_cache_hits + 1;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_misses') = @global_open_cache_miss + 1;
--echo 1 Expected

select (select variable_value from information_schema.global_status where variable_name ='Table_open_cache_overflows') = @global_open_cache_overflow + 1;
--echo 1 Expected

disconnect con1;

--echo #cleanup
connection default;

DROP TABLE IF EXISTS tab1;
DROP TABLE IF EXISTS tab2;
DROP TABLE IF EXISTS tab3;
set @@GLOBAL.table_open_cache=DEFAULT;

