[t:2908], add simple test

git-svn-id: file:///svn/mysql/tests/mysql-test@23838 c7de825b-a66e-492c-adef-691d508d4ae1

mysql-test/suite/tokudb.mvcc/r/checksum-locks.result

+SET STORAGE_ENGINE = 'tokudb';
+# Establish connection conn1 (user = root)
+DROP TABLE IF EXISTS foo;
+create table foo (a int)engine=TokuDB;
+show create table foo;
+Table	Create Table
+foo	CREATE TABLE `foo` (
+  `a` int(11) DEFAULT NULL
+) ENGINE=TOKUDB DEFAULT CHARSET=latin1
+insert into foo values (1),(2),(3);
+begin;
+insert into foo values (4);
+set session transaction isolation level repeatable read;
+# 1,2,3
+select * from foo;
+a
+1
+2
+3
+checksum table foo;
+Table	Checksum
+test.foo	251493421
+set session transaction isolation level read committed;
+# 1,2,3
+select * from foo;
+a
+1
+2
+3
+checksum table foo;
+Table	Checksum
+test.foo	251493421
+set session transaction isolation level read uncommitted;
+# 1,2,3,4
+select * from foo;
+a
+1
+2
+3
+4
+checksum table foo;
+Table	Checksum
+test.foo	149057747
+set session transaction isolation level serializable;
+select * from foo;
+ERROR HY000: Lock wait timeout exceeded; try restarting transaction
+# should be NULl
+checksum table foo;
+Table	Checksum
+test.foo	NULL
+commit;
+set session transaction isolation level serializable;
+DROP TABLE foo;

mysql-test/suite/tokudb.mvcc/t/checksum-locks.test

+# ticket 895 is a query optimization problem with the primary key
+
+#--source include/have_tokudb.inc
+SET STORAGE_ENGINE = 'tokudb';
+
+--echo # Establish connection conn1 (user = root)
+connect (conn1,localhost,root,,);
+
+--disable_warnings
+DROP TABLE IF EXISTS foo;
+--enable_warnings
+
+connection default;
+create table foo (a int)engine=TokuDB;
+show create table foo;
+insert into foo values (1),(2),(3);
+begin;
+insert into foo values (4);
+
+connection conn1;
+set session transaction isolation level repeatable read;
+--echo # 1,2,3
+select * from foo;
+checksum table foo;
+
+set session transaction isolation level read committed;
+--echo # 1,2,3
+select * from foo;
+checksum table foo;
+
+set session transaction isolation level read uncommitted;
+--echo # 1,2,3,4
+select * from foo;
+checksum table foo;
+
+set session transaction isolation level serializable;
+--error ER_LOCK_WAIT_TIMEOUT
+select * from foo;
+--echo # should be NULl
+checksum table foo;
+
+
+connection default;
+commit;
+disconnect conn1;
+
+connection default;
+# Final cleanup.
+set session transaction isolation level serializable;
+DROP TABLE foo;
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