# ==== Purpose ====
#
# Verify that a transaction with wrong checksum is trimmed off from
# the binary log when the server restarts and executes recovery.  Such
# recovery is executed if the server restarts after a crash.
#
# ==== Method ====
#
# 1. Inject a wrong checksum using debug code.
# 2. Crash server using debug_sync
# 3. Restart server
# 4. Show contents of binary log.
#
# ==== References ====
#
# WL#5493 Binlog crash-safe when master crashed
# WL#5440 Test binlog and replication when master crashed

--let $old_debug = `select @@global.debug`
--let $prefix = `select CONCAT(IF(LENGTH(@@global.debug) > 0, CONCAT(@@global.debug, ":"), ''), "d,debug,info,enter,return,query,")`
# Don't test this under valgrind, memory leaks will occur
-- source include/not_valgrind.inc
-- source include/not_embedded.inc
-- source include/have_debug.inc
-- source include/have_innodb.inc
-- source include/have_binlog_format_row.inc
-- source include/not_crashrep.inc

call mtr.add_suppression("Attempting backtrace");
call mtr.add_suppression("allocated tablespace *., old maximum was 0");
call mtr.add_suppression("Error in Log_event::read_log_event()");
call mtr.add_suppression("Buffered warning: Performance schema disabled");

RESET MASTER;

CREATE TABLE t1(a LONGBLOB) ENGINE=INNODB;
CREATE TABLE t2(a LONGBLOB) ENGINE=MYISAM;

-- echo # Test case5: Inject wrong value of crc for a log event, and
-- echo #             then set DBUG POINT to casue the master crash.
# Write file to make mysql-test-run.pl expect crash and restart
-- exec echo "wait" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
-- let $binlog_start= query_get_value(SHOW MASTER STATUS, Position, 1)
-- let $binlog_file= query_get_value(SHOW MASTER STATUS, File, 1)
INSERT INTO t2 (a) VALUES (REPEAT('a',1));

BEGIN;
INSERT INTO t1 (a) VALUES (REPEAT('a',1));
--disable_query_log
eval SET SESSION debug=CONCAT('$prefix', "fault_injection_crc_value");
--enable_query_log
INSERT INTO t1 (a) VALUES (REPEAT('a',2));
COMMIT;

BEGIN;
INSERT INTO t1 (a) VALUES (REPEAT('a',3));
--disable_query_log
eval SET SESSION debug=CONCAT('$prefix', "crash_commit_after_prepare");
--enable_query_log
# Run the crashing query
-- error 2013
COMMIT;

-- source include/wait_until_disconnected.inc
-- enable_reconnect
-- echo # Restart the master server
-- exec echo "restart" > $MYSQLTEST_VARDIR/tmp/mysqld.1.expect
-- source include/wait_until_connected_again.inc
-- disable_reconnect

-- echo # Test the transaction with a log event injected a wrong crc value
-- echo # will be trimmed from the crashed binlog file
-- source include/show_binlog_events.inc

DROP TABLE t1, t2;

