/usr/lib/mysql-testsuite/t/myisam-blob.test is in mysql-testsuite-5.6 5.6.16-1~exp1.
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# Test bugs in the MyISAM code with blobs
#
--disable_warnings
drop table if exists t1;
--enable_warnings
# Bug #2159 (Problem with update of blob to > 16M)
CREATE TABLE t1 (data LONGBLOB) ENGINE=myisam;
INSERT INTO t1 (data) VALUES (NULL);
UPDATE t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
delete from t1 where left(data,1)='a';
check table t1;
truncate table t1;
INSERT INTO t1 (data) VALUES (repeat('a',1*1024*1024));
INSERT INTO t1 (data) VALUES (repeat('b',16*1024*1024-1024));
delete from t1 where left(data,1)='b';
check table t1;
# now we have two blocks in the table, first is a 1M record and second is
# a 16M delete block.
UPDATE t1 set data=repeat('c',17*1024*1024);
check table t1;
delete from t1 where left(data,1)='c';
check table t1;
INSERT INTO t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
alter table t1 modify data blob;
select length(data) from t1;
drop table t1;
CREATE TABLE t1 (data BLOB) ENGINE=myisam;
INSERT INTO t1 (data) VALUES (NULL);
UPDATE t1 set data=repeat('a',18*1024*1024);
select length(data) from t1;
drop table t1;
# End of 4.1 tests
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