** Setup **

connect  con0,localhost,root,,;
connect  con1, localhost, root,,;
connection con0;
SET @start_global_value = @@GLOBAL.query_cache_wlock_invalidate;
SET @start_session_value = @@SESSION.query_cache_wlock_invalidate;
SET @old_cache_size = @@GLOBAL.query_cache_size;
SET @old_cache_type = @@GLOBAL.query_cache_type;
SET GLOBAL query_cache_type= ON;
SET LOCAL query_cache_type= ON;
connection con1;
SET LOCAL query_cache_type= ON;
connection con0;
CREATE TABLE t1(id int, value varchar(10));
INSERT INTO t1 VALUES(1, 'val1');
INSERT INTO t1 VALUES(2, 'val2');
INSERT INTO t1 VALUES(3, 'val3');
SET GLOBAL query_cache_size = 131072;
FLUSHING CACHE
SET GLOBAL query_cache_size = 0;
SET GLOBAL query_cache_size = 131072;
SET GLOBAL query_cache_type = ON;
Testing for value ON
connection con0;
SET SESSION query_cache_wlock_invalidate = ON;
connection con1;
SET SESSION query_cache_wlock_invalidate = ON;
'#----------------------------FN_DYNVARS_136_01--------------#'
Testing for cache invalidation
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
SHOW STATUS LIKE 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	1
1 Expected
LOCK TABLE t1 WRITE;
UNLOCK TABLES;
SHOW STATUS LIKE 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	0
0 Expected
'#----------------------------FN_DYNVARS_136_02-----------------------#'
SELECT * FROM t1;
SHOW STATUS LIKE 'Qcache_queries_in_cache';
connection con1;
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
connection con0;
LOCK TABLE t1 WRITE;
connection con1;
** Asynchronous Execution **
SELECT * FROM t1;
connection con0;
wait until table is locked
UNLOCK TABLES;
connection con1;
** Asynchronous Result **
id	value
1	val1
2	val2
3	val3
Testing for value OFF
connection con0;
SET SESSION query_cache_wlock_invalidate = OFF;
connection con1;
SET SESSION query_cache_wlock_invalidate = OFF;
'#----------------------------FN_DYNVARS_136_03------------------#'
Testing for cache invalidation
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
SHOW STATUS LIKE 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	1
1 Expected
LOCK TABLE t1 WRITE;
UNLOCK TABLES;
SHOW STATUS LIKE 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	0
0 Expected
'#----------------------------FN_DYNVARS_136_04---------------------#'
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
SHOW STATUS LIKE 'Qcache_queries_in_cache';
Variable_name	Value
Qcache_queries_in_cache	1
1 Expected
connection con1;
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
connection con0;
LOCK TABLE t1 WRITE;
connection con1;
** Should not be blocked **
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
SELECT * FROM t1;
id	value
1	val1
2	val2
3	val3
connection con0;
UNLOCK TABLES;
connection con1;
'#----------------------------FN_DYNVARS_136_05------------------------#'
SET GLOBAL query_cache_wlock_invalidate = OFF;
connect  con_int1,localhost,root,,;
connection con_int1;
SELECT @@SESSION.query_cache_wlock_invalidate;
@@SESSION.query_cache_wlock_invalidate
0
Expected Value : 0 / OFF;
SET SESSION query_cache_wlock_invalidate = ON;
connect  con_int2,localhost,root,,;
connection con_int2;
SELECT @@SESSION.query_cache_wlock_invalidate;
@@SESSION.query_cache_wlock_invalidate
0
Expected Value : 0 / OFF;
SET SESSION query_cache_wlock_invalidate = OFF;
connection con_int1;
SELECT @@SESSION.query_cache_wlock_invalidate;
@@SESSION.query_cache_wlock_invalidate
1
Expected Value : 1 / ON;
connection con_int2;
SELECT @@SESSION.query_cache_wlock_invalidate;
@@SESSION.query_cache_wlock_invalidate
0
Expected Value : 0 / OFF;
SELECT @@GLOBAL.query_cache_wlock_invalidate;
@@GLOBAL.query_cache_wlock_invalidate
0
Expected Value : 0 / OFF;
connection default;
disconnect con_int1;
disconnect con_int2;

CLEANUP
connection con0;
SET @@GLOBAL.query_cache_wlock_invalidate = @start_global_value;
SET @@SESSION.query_cache_wlock_invalidate = @start_session_value ;
SET @@GLOBAL.query_cache_size = @old_cache_size;
SET @@GLOBAL.query_cache_type = @old_cache_type;
connection default;
disconnect con0;
disconnect con1;
DROP TABLE t1;