Adding upstream version 1:10.11.6.upstream/1%10.11.6upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>

1 files changed, 559 insertions, 0 deletions

diff --git a/mysql-test/main/delete.result b/mysql-test/main/delete.result
new file mode 100644
index 00000000..7a9963ab
--- /dev/null
+++ b/mysql-test/main/delete.result
@@ -0,0 +1,559 @@
+call mtr.add_suppression("Sort aborted.*");
+drop table if exists t1,t2,t3,t11,t12;
+CREATE TABLE t1 (a tinyint(3), b tinyint(5));
+INSERT INTO t1 VALUES (1,1);
+INSERT LOW_PRIORITY INTO t1 VALUES (1,2);
+INSERT INTO t1 VALUES (1,3);
+DELETE from t1 where a=1 limit 1;
+DELETE LOW_PRIORITY from t1 where a=1;
+INSERT INTO t1 VALUES (1,1);
+DELETE from t1;
+LOCK TABLE t1 write;
+INSERT INTO t1 VALUES (1,2);
+DELETE from t1;
+UNLOCK TABLES;
+INSERT INTO t1 VALUES (1,2);
+SET AUTOCOMMIT=0;
+DELETE from t1;
+SET AUTOCOMMIT=1;
+drop table t1;
+create table t1 (
+a bigint not null,
+b bigint not null default 0,
+c bigint not null default 0,
+d bigint not null default 0,
+e bigint not null default 0,
+f bigint not null default 0,
+g bigint not null default 0,
+h bigint not null default 0,
+i bigint not null default 0,
+j bigint not null default 0,
+primary key (a,b,c,d,e,f,g,h,i,j));
+insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23);
+delete from t1 where a=26;
+drop table t1;
+create table t1 (
+a bigint not null,
+b bigint not null default 0,
+c bigint not null default 0,
+d bigint not null default 0,
+e bigint not null default 0,
+f bigint not null default 0,
+g bigint not null default 0,
+h bigint not null default 0,
+i bigint not null default 0,
+j bigint not null default 0,
+primary key (a,b,c,d,e,f,g,h,i,j));
+insert into t1 (a) values (2),(4),(6),(8),(10),(12),(14),(16),(18),(20),(22),(24),(26),(23),(27);
+delete from t1 where a=27;
+drop table t1;
+CREATE TABLE `t1` (
+`i` int(10) NOT NULL default '0',
+`i2` int(10) NOT NULL default '0',
+PRIMARY KEY  (`i`)
+);
+DELETE FROM t1 USING t1 WHERE post='1';
+ERROR 42S22: Unknown column 'post' in 'where clause'
+drop table t1;
+CREATE TABLE t1 (
+bool     char(0) default NULL,
+not_null varchar(20) binary NOT NULL default '',
+misc     integer not null,
+PRIMARY KEY  (not_null)
+) ENGINE=MyISAM;
+INSERT INTO t1 VALUES (NULL,'a',4), (NULL,'b',5), (NULL,'c',6), (NULL,'d',7);
+select * from t1 where misc > 5 and bool is null;
+bool	not_null	misc
+NULL	c	6
+NULL	d	7
+delete   from t1 where misc > 5 and bool is null;
+select * from t1 where misc > 5 and bool is null;
+bool	not_null	misc
+select count(*) from t1;
+count(*)
+2
+delete from t1 where 1 > 2;
+select count(*) from t1;
+count(*)
+2
+delete from t1 where 3 > 2;
+select count(*) from t1;
+count(*)
+0
+drop table t1;
+create table t1 (a int not null auto_increment primary key, b char(32));
+insert into t1 (b) values ('apple'), ('apple');
+select * from t1;
+a	b
+1	apple
+2	apple
+delete t1 from t1, t1 as t2 where t1.b = t2.b and t1.a > t2.a;
+select * from t1;
+a	b
+1	apple
+drop table t1;
+create table t11 (a int NOT NULL, b int, primary key (a));
+create table t12 (a int NOT NULL, b int, primary key (a));
+create table t2 (a int NOT NULL, b int, primary key (a));
+insert into t11 values (0, 10),(1, 11),(2, 12);
+insert into t12 values (33, 10),(0, 11),(2, 12);
+insert into t2 values (1, 21),(2, 12),(3, 23);
+select * from t11;
+a	b
+0	10
+1	11
+2	12
+select * from t12;
+a	b
+33	10
+0	11
+2	12
+select * from t2;
+a	b
+1	21
+2	12
+3	23
+delete t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
+ERROR 21000: Subquery returns more than 1 row
+select * from t11;
+a	b
+0	10
+1	11
+2	12
+select * from t12;
+a	b
+33	10
+0	11
+2	12
+delete ignore t11.*, t12.* from t11,t12 where t11.a = t12.a and t11.b <> (select b from t2 where t11.a < t2.a);
+Warnings:
+Warning	1242	Subquery returns more than 1 row
+Warning	1242	Subquery returns more than 1 row
+select * from t11;
+a	b
+0	10
+1	11
+select * from t12;
+a	b
+33	10
+0	11
+insert into t11 values (2, 12);
+delete from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
+ERROR 21000: Subquery returns more than 1 row
+select * from t11;
+a	b
+0	10
+1	11
+2	12
+delete ignore from t11 where t11.b <> (select b from t2 where t11.a < t2.a);
+Warnings:
+Warning	1242	Subquery returns more than 1 row
+Warning	1242	Subquery returns more than 1 row
+select * from t11;
+a	b
+0	10
+1	11
+drop table t11, t12, t2;
+create table t1 (a int, b int, unique key (a), key (b));
+insert into t1 values (3, 3), (7, 7);
+delete t1 from t1 where a = 3;
+check table t1;
+Table	Op	Msg_type	Msg_text
+test.t1	check	status	OK
+select * from t1;
+a	b
+7	7
+drop table t1;
+CREATE TABLE t1 ( a int PRIMARY KEY );
+DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a;
+INSERT INTO t1 VALUES (0),(1),(2);
+DELETE FROM t1 WHERE t1.a > 0 ORDER BY t1.a LIMIT 1;
+SELECT * FROM t1;
+a
+0
+2
+DROP TABLE t1;
+create table t1 (a int);
+delete `4.t1` from t1 as `4.t1` where `4.t1`.a = 5;
+delete FROM `4.t1` USING t1 as `4.t1` where `4.t1`.a = 5;
+drop table t1;
+create table t1(f1 int primary key);
+insert into t1 values (4),(3),(1),(2);
+delete from t1 where (@a:= f1) order by f1 limit 1;
+select @a;
+@a
+1
+drop table t1;
+CREATE TABLE t1 (
+`date` date ,
+`time` time ,
+`seq` int(10) unsigned NOT NULL auto_increment,
+PRIMARY KEY  (`seq`),
+KEY `seq` (`seq`),
+KEY `time` (`time`),
+KEY `date` (`date`)
+);
+DELETE FROM t1 ORDER BY date ASC, time ASC LIMIT 1;
+drop table t1;
+End of 4.1 tests
+CREATE TABLE t1 (a int not null,b int not null);
+CREATE TABLE t2 (a int not null, b int not null, primary key (a,b));
+CREATE TABLE t3 (a int not null, b int not null, primary key (a,b));
+insert into t1 values (1,1),(2,1),(1,3);
+insert into t2 values (1,1),(2,2),(3,3);
+insert into t3 values (1,1),(2,1),(1,3);
+select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
+a	b	a	b	a	b
+1	1	1	1	1	1
+2	1	2	2	2	1
+1	3	1	1	1	3
+explain select * from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
+id	select_type	table	type	possible_keys	key	key_len	ref	rows	Extra
+1	SIMPLE	t1	ALL	NULL	NULL	NULL	NULL	3	
+1	SIMPLE	t2	ref	PRIMARY	PRIMARY	4	test.t1.a	1	Using index
+1	SIMPLE	t3	eq_ref	PRIMARY	PRIMARY	8	test.t2.b,test.t1.b	1	Using index
+delete t2.*,t3.* from t1,t2,t3 where t1.a=t2.a AND t2.b=t3.a and t1.b=t3.b;
+select * from t3;
+a	b
+drop table t1,t2,t3;
+create table t1(a date not null);
+insert into t1 values (0);
+select * from t1 where a is null;
+a
+0000-00-00
+delete from t1 where a is null;
+select count(*) from t1;
+count(*)
+0
+drop table t1;
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (1);
+DELETE FROM t1 ORDER BY x;
+ERROR 42S22: Unknown column 'x' in 'order clause'
+DELETE FROM t1 ORDER BY t2.x;
+ERROR 42S22: Unknown column 't2.x' in 'order clause'
+DELETE FROM t1 ORDER BY (SELECT x);
+ERROR 42S22: Unknown column 'x' in 'field list'
+DROP TABLE t1;
+CREATE TABLE t1 (
+a INT
+);
+CREATE TABLE t2 (
+a INT
+);
+CREATE DATABASE db1;
+CREATE TABLE db1.t1 (
+a INT
+);
+INSERT INTO db1.t1 (a) SELECT * FROM t1;
+CREATE DATABASE db2;
+CREATE TABLE db2.t1 (
+a INT
+);
+INSERT INTO db2.t1 (a) SELECT * FROM t2;
+DELETE FROM t1 alias USING t1, t2 alias WHERE t1.a = alias.a;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'alias USING t1, t2 alias WHERE t1.a = alias.a' at line 1
+DELETE FROM alias USING t1, t2 alias WHERE t1.a = alias.a;
+DELETE FROM t1, alias USING t1, t2 alias WHERE t1.a = alias.a;
+DELETE FROM t1, t2 USING t1, t2 alias WHERE t1.a = alias.a;
+ERROR 42S02: Unknown table 't2' in MULTI DELETE
+DELETE FROM db1.t1 alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a' at line 1
+DELETE FROM alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
+DELETE FROM db2.alias USING db1.t1, db2.t1 alias WHERE db1.t1.a = alias.a;
+ERROR 42S02: Unknown table 'alias' in MULTI DELETE
+DELETE FROM t1 USING t1 WHERE a = 1;
+SELECT * FROM t1;
+a
+DELETE FROM t1 alias USING t1 alias WHERE a = 2;
+ERROR 42000: You have an error in your SQL syntax; check the manual that corresponds to your MariaDB server version for the right syntax to use near 'alias USING t1 alias WHERE a = 2' at line 1
+SELECT * FROM t1;
+a
+DROP TABLE t1, t2;
+DROP DATABASE db1;
+DROP DATABASE db2;
+CREATE FUNCTION f1() RETURNS INT RETURN 1;
+CREATE TABLE t1 (a INT);
+INSERT INTO t1 VALUES (0);
+DELETE FROM t1 ORDER BY (f1(10)) LIMIT 1;
+ERROR 42000: Incorrect number of arguments for FUNCTION test.f1; expected 0, got 1
+DROP TABLE t1;
+DROP FUNCTION f1;
+#
+# Bug #49552 : sql_buffer_result cause crash + not found records 
+#   in multitable delete/subquery
+#
+CREATE TABLE t1(a INT);
+INSERT INTO t1 VALUES (1),(2),(3);
+SET SESSION SQL_BUFFER_RESULT=1;
+DELETE t1 FROM (SELECT SUM(a) a FROM t1) x,t1;
+SET SESSION SQL_BUFFER_RESULT=DEFAULT;
+SELECT * FROM t1;
+a
+DROP TABLE t1;
+End of 5.0 tests
+DROP DATABASE IF EXISTS db1;
+DROP DATABASE IF EXISTS db2;
+DROP DATABASE IF EXISTS db3;
+DROP DATABASE IF EXISTS db4;
+DROP TABLE IF EXISTS t1, t2;
+DROP PROCEDURE IF EXISTS count;
+USE test;
+CREATE DATABASE db1;
+CREATE DATABASE db2;
+CREATE TABLE db1.t1 (a INT, b INT);
+INSERT INTO db1.t1 VALUES (1,1),(2,2),(3,3);
+CREATE TABLE db1.t2 AS SELECT * FROM db1.t1;
+CREATE TABLE db2.t1 AS SELECT * FROM db1.t2;
+CREATE TABLE db2.t2 AS SELECT * FROM db2.t1;
+CREATE TABLE t1 AS SELECT * FROM db2.t2;
+CREATE TABLE t2 AS SELECT * FROM t1;
+CREATE PROCEDURE count_rows()
+BEGIN
+SELECT COUNT(*) AS "COUNT(db1.t1)" FROM db1.t1;
+SELECT COUNT(*) AS "COUNT(db1.t2)" FROM db1.t2;
+SELECT COUNT(*) AS "COUNT(db2.t1)" FROM db2.t1;
+SELECT COUNT(*) AS "COUNT(db2.t2)" FROM db2.t2;
+SELECT COUNT(*) AS "COUNT(test.t1)" FROM test.t1;
+SELECT COUNT(*) AS "COUNT(test.t2)" FROM test.t2;
+END|
+CREATE DATABASE db3;
+USE db3;
+DROP DATABASE db3;
+SELECT * FROM t1;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db1.t1, db2.t2;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db1.t1, db2.t2;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db1.t1 AS a1, db2.t2;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db1.t1, db2.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db1.t1, db2.t2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db1.t1, db2.t2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db1.t1 AS a1, db2.t2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db1.t1, db2.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
+ERROR 3D000: No database selected
+DELETE a1 FROM db1.t1 AS a1, db2.t2 AS a1;
+ERROR 3D000: No database selected
+DELETE a1 FROM db1.a1, db2.t2 AS a1;
+ERROR 3D000: No database selected
+DELETE a1 FROM a1, db1.t1 AS a1;
+ERROR 3D000: No database selected
+DELETE t1 FROM db1.t1, db2.t1 AS a1;
+ERROR 3D000: No database selected
+DELETE t1 FROM db1.t1 AS a1, db2.t1 AS a2;
+ERROR 3D000: No database selected
+DELETE t1 FROM db1.t1, db2.t1;
+ERROR 3D000: No database selected
+USE test;
+DELETE a1,a2 FROM db1.t1, db2.t2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE a1,a2 FROM db1.t1, db2.t2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE a1,a2 FROM db1.t1 AS a1, db2.t2;
+ERROR 42S02: Unknown table 'a2' in MULTI DELETE
+DELETE a1,a2 FROM db1.t1, db2.t2 AS a2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
+ERROR 42S02: Table 'db3.t1' doesn't exist
+DELETE a1,a2 FROM db3.t1 AS a1, db4.t2 AS a2;
+ERROR 42S02: Table 'db3.t1' doesn't exist
+DELETE FROM a1,a2 USING db1.t1, db2.t2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE FROM a1,a2 USING db1.t1, db2.t2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE FROM a1,a2 USING db1.t1 AS a1, db2.t2;
+ERROR 42S02: Unknown table 'a2' in MULTI DELETE
+DELETE FROM a1,a2 USING db1.t1, db2.t2 AS a2;
+ERROR 42S02: Unknown table 'a1' in MULTI DELETE
+DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
+ERROR 42S02: Table 'db3.t1' doesn't exist
+DELETE FROM a1,a2 USING db3.t1 AS a1, db4.t2 AS a2;
+ERROR 42S02: Table 'db3.t1' doesn't exist
+DELETE a1 FROM db1.t1 AS a1, db2.t2 AS a1;
+ERROR 42000: Not unique table/alias: 'a1'
+DELETE a1 FROM db1.a1, db2.t2 AS a1;
+ERROR 42S02: Table 'db1.a1' doesn't exist
+DELETE a1 FROM a1, db1.t1 AS a1;
+ERROR 42000: Not unique table/alias: 'a1'
+DELETE t1 FROM db1.t1, db2.t1 AS a1;
+ERROR 42S02: Unknown table 't1' in MULTI DELETE
+DELETE t1 FROM db1.t1 AS a1, db2.t1 AS a2;
+ERROR 42S02: Unknown table 't1' in MULTI DELETE
+DELETE t1 FROM db1.t1, db2.t1;
+ERROR 42S02: Unknown table 't1' in MULTI DELETE
+DELETE t1 FROM db1.t2 AS t1, db2.t2 AS t2 WHERE t2.a = 1 AND t1.a = t2.a;
+SELECT ROW_COUNT();
+ROW_COUNT()
+1
+CALL count_rows();
+COUNT(db1.t1)
+3
+COUNT(db1.t2)
+2
+COUNT(db2.t1)
+3
+COUNT(db2.t2)
+3
+COUNT(test.t1)
+3
+COUNT(test.t2)
+3
+DELETE a1, a2 FROM db2.t1 AS a1, t2 AS a2 WHERE a1.a = 2 AND a2.a = 2;
+SELECT ROW_COUNT();
+ROW_COUNT()
+2
+CALL count_rows();
+COUNT(db1.t1)
+3
+COUNT(db1.t2)
+2
+COUNT(db2.t1)
+2
+COUNT(db2.t2)
+3
+COUNT(test.t1)
+3
+COUNT(test.t2)
+2
+DROP DATABASE db1;
+DROP DATABASE db2;
+DROP PROCEDURE count_rows;
+DROP TABLE t1, t2;
+#
+# Bug#46958: Assertion in Diagnostics_area::set_ok_status, trigger, 
+# merge table
+#
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+CREATE TRIGGER tr1 BEFORE DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+DELETE t1, t2, t3 FROM t1, t2, t3;
+ERROR 42S02: Table 'test.no_such_table' doesn't exist
+SELECT * FROM t1;
+a
+SELECT * FROM t2;
+a
+1
+2
+SELECT * FROM t3;
+a
+1
+2
+DROP TABLE t1, t2, t3;
+CREATE TABLE t1 ( a INT );
+CREATE TABLE t2 ( a INT );
+CREATE TABLE t3 ( a INT );
+INSERT INTO t1 VALUES (1), (2);
+INSERT INTO t2 VALUES (1), (2);
+INSERT INTO t3 VALUES (1), (2);
+CREATE TRIGGER tr1 AFTER DELETE ON t2
+FOR EACH ROW INSERT INTO no_such_table VALUES (1);
+DELETE t1, t2, t3 FROM t1, t2, t3;
+ERROR 42S02: Table 'test.no_such_table' doesn't exist
+SELECT * FROM t1;
+a
+SELECT * FROM t2;
+a
+2
+SELECT * FROM t3;
+a
+1
+2
+DROP TABLE t1, t2, t3;
+#
+# Bug #46425 crash in Diagnostics_area::set_ok_status, 
+#            empty statement, DELETE IGNORE
+#
+CREATE table t1 (i INTEGER);
+INSERT INTO t1 VALUES (1);
+CREATE TRIGGER tr1 AFTER DELETE ON t1 FOR EACH ROW 
+BEGIN 
+INSERT INTO t1 SELECT * FROM t1 AS A;
+END |
+DELETE IGNORE FROM t1;
+ERROR HY000: Can't update table 't1' in stored function/trigger because it is already used by statement which invoked this stored function/trigger
+DROP TABLE t1;
+#
+# Bug #53450: Crash/assertion
+#    "virtual int ha_myisam::index_first(uchar*)") at assert.c:81
+#
+CREATE TABLE t1 (a INT,    b INT,    c INT,
+INDEX(a), INDEX(b), INDEX(c));
+INSERT INTO t1 VALUES (1,2,3), (4,5,6), (7,8,9);
+DELETE FROM t1 WHERE a = 10 OR b = 20 ORDER BY c LIMIT 1;
+DROP TABLE t1;
+#
+# Bug #53034: Multiple-table DELETE statements not accepting
+#             "Access compatibility" syntax
+#
+CREATE TABLE t1 (id INT);
+CREATE TABLE t2 LIKE t1;
+CREATE TABLE t3 LIKE t1;
+DELETE FROM t1.*, test.t2.*, a.* USING t1, t2, t3 AS a;
+DROP TABLE t1, t2, t3;
+End of 5.1 tests
+#
+# Bug#51099 Assertion in mysql_multi_delete_prepare()
+#
+DROP TABLE IF EXISTS t1, t2;
+DROP VIEW IF EXISTS v1, v2;
+CREATE TABLE t1(a INT);
+CREATE TABLE t2(b INT);
+CREATE VIEW v1 AS SELECT a, b FROM t1, t2;
+CREATE VIEW v2 AS SELECT a FROM v1;
+DELETE FROM v2;
+ERROR HY000: Can not delete from join view 'test.v2'
+DELETE v2 FROM v2;
+ERROR HY000: Can not delete from join view 'test.v2'
+DROP VIEW v2, v1;
+DROP TABLE t1, t2;
+End of 5.5 tests
+#
+# MDEV-30586: DELETE with WHERE containing nested subquery
+#             with set function aggregated in outer subquery
+#
+create table t1 (a int);
+insert into t1 values (3), (7), (1);
+create table t2 (b int);
+insert into t2 values (2), (1), (4), (7);
+create table t3 (a int, b int);
+insert into t3 values (2,10), (7,30), (2,30), (1,10), (7,40);
+select * from t1
+where t1.a in (select t3.a from t3 group by t3.a
+having t3.a > any (select t2.b from t2
+where t2.b*10 < sum(t3.b)));
+a
+7
+delete from t1
+where t1.a in (select t3.a from t3 group by t3.a
+having t3.a > any (select t2.b from t2
+where t2.b*10 < sum(t3.b)));
+select * from t1
+where t1.a in (select t3.a from t3 group by t3.a
+having t3.a > any (select t2.b from t2
+where t2.b*10 < sum(t3.b)));
+a
+update t1 set t1.a=t1.a+10
+where t1.a in (select t3.a from t3 group by t3.a
+having t3.a > any (select t2.b from t2
+where t2.b*10 < sum(t3.b)));
+drop table t1,t2,t3;
+End of 10.4 tests