#
# Just a couple of tests to make sure that schema works.
#
# Drop mysqltest1 database, as it can left from the previous tests.
#

# Save the initial number of concurrent sessions.
--source include/count_sessions.inc
--source include/default_charset.inc

create schema foo;
show create schema foo;
show schemas;
drop schema foo;


--echo #
--echo # Bug #48940 MDL deadlocks against mysql_rm_db
--echo #

connect(con2, localhost, root);

connection default;

CREATE SCHEMA schema1;
CREATE TABLE schema1.t1 (a INT);

START TRANSACTION;
INSERT INTO schema1.t1 VALUES (1);

connection con2;
--send DROP SCHEMA schema1

connection default;
let $wait_condition= SELECT COUNT(*)= 1 FROM information_schema.processlist
                     WHERE state= 'Waiting for table metadata lock' 
                     AND info='DROP SCHEMA schema1';
--source include/wait_condition.inc
# Error 1 is from ALTER DATABASE when the database does not exist.
# Listing the error twice to prevent result diffences based on filename.
--error 1,1
ALTER SCHEMA schema1 DEFAULT CHARACTER SET utf8;
COMMIT;

connection con2;
--reap

connection default;
disconnect con2;


--echo #
--echo # Bug #49988 MDL deadlocks with mysql_create_db, reload_acl_and_cache
--echo #

connect (con2, localhost, root);

connection default;
CREATE SCHEMA schema1;
CREATE TABLE schema1.t1 (id INT);
LOCK TABLE schema1.t1 WRITE;

connection con2;
--send DROP SCHEMA schema1

connection default;
let $wait_condition=SELECT COUNT(*)=1 FROM information_schema.processlist 
  WHERE state='Waiting for schema metadata lock' and info='DROP SCHEMA schema1';
--source include/wait_condition.inc

--echo # CREATE SCHEMA used to give a deadlock.
--echo # Now we prohibit CREATE SCHEMA in LOCK TABLES mode.
--error ER_LOCK_OR_ACTIVE_TRANSACTION
CREATE SCHEMA IF NOT EXISTS schema1;

--echo # UNLOCK TABLES so DROP SCHEMA can continue.
UNLOCK TABLES;

connection con2;
--reap

connection default;
disconnect con2;


--echo #
--echo # Bug#54360 Deadlock DROP/ALTER/CREATE DATABASE with open HANDLER
--echo #

CREATE DATABASE db1;
CREATE TABLE db1.t1 (a INT);
INSERT INTO db1.t1 VALUES (1), (2);

connect (con1, localhost, root);
HANDLER db1.t1 OPEN;

connection default;
--echo # Sending:
--send DROP DATABASE db1

connect (con2, localhost, root);
let $wait_condition=SELECT COUNT(*)=1 FROM information_schema.processlist
  WHERE state='Waiting for table metadata lock' AND info='DROP DATABASE db1';
--source include/wait_condition.inc

connection con1;
# All these statements before resulted in deadlock.
CREATE DATABASE db2;
ALTER DATABASE db2 DEFAULT CHARACTER SET utf8;
DROP DATABASE db2;
HANDLER t1 CLOSE;

connection default;
--echo # Reaping: DROP DATABASE db1
--reap
disconnect con1;
disconnect con2;


--echo #
--echo # Tests for increased CREATE/ALTER/DROP DATABASE concurrency with
--echo # database name locks.
--echo # 

connect (con2, localhost, root);
connect (con3, localhost, root);

connection default;
CREATE DATABASE db1;
CREATE TABLE db1.t1 (id INT);
START TRANSACTION;
INSERT INTO db1.t1 VALUES (1);

connection con2;
--echo # DROP DATABASE should block due to the active transaction
--echo # Sending:
--send DROP DATABASE db1

connection con3;
let $wait_condition=SELECT COUNT(*)=1 FROM information_schema.processlist 
  WHERE state='Waiting for table metadata lock' and info='DROP DATABASE db1';
--source include/wait_condition.inc
--echo # But it should still be possible to CREATE/ALTER/DROP other databases.
CREATE DATABASE db2;
ALTER DATABASE db2 DEFAULT CHARACTER SET utf8;
DROP DATABASE db2;

connection default;
--echo # End the transaction so DROP DATABASE db1 can continue
COMMIT;

connection con2;
--echo # Reaping: DROP DATABASE db1
--reap

connection default;
disconnect con2;
disconnect con3;


# Check that all connections opened by test cases in this file are really
# gone so execution of other tests won't be affected by their presence.
--source include/wait_until_count_sessions.inc