# The author disclaims copyright to this source code. In place of
# a legal notice, here is a blessing:
#
# May you do good and not evil.
# May you find forgiveness for yourself and forgive others.
# May you share freely, never taking more than you give.
#
#***********************************************************************
#
# This file tests creating and dropping triggers, and interaction thereof
# with the database COMMIT/ROLLBACK logic.
#
# 1. CREATE and DROP TRIGGER tests
# trig-1.1: Error if table does not exist
# trig-1.2: Error if trigger already exists
# trig-1.3: Created triggers are deleted if the transaction is rolled back
# trig-1.4: DROP TRIGGER removes trigger
# trig-1.5: Dropped triggers are restored if the transaction is rolled back
# trig-1.6: Error if dropped trigger doesn't exist
# trig-1.7: Dropping the table automatically drops all triggers
# trig-1.8: A trigger created on a TEMP table is not inserted into sqlite_master
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
do_test trig_cd-1.1 {
catchsql {
CREATE TRIGGER trig UPDATE ON no_such_table BEGIN
SELECT * from sqlite_master;
END;
}
} {1 {no such table: no_such_table}}
execsql {
CREATE TABLE t1(a);
}
execsql {
CREATE TRIGGER tr1 INSERT ON t1 BEGIN
INSERT INTO t1 values(1);
END;
}
do_test trig_cd-1.2 {
catchsql {
CREATE TRIGGER tr1 DELETE ON t1 BEGIN
SELECT * FROM sqlite_master;
END
}
} {1 {trigger tr1 already exists}}
do_test trig_cd-1.3 {
catchsql {
BEGIN;
CREATE TRIGGER tr2 INSERT ON t1 BEGIN
SELECT * from sqlite_master; END;
ROLLBACK;
CREATE TRIGGER tr2 INSERT ON t1 BEGIN
SELECT * from sqlite_master; END;
}
} {0 {}}
do_test trig_cd-1.4 {
catchsql {
DROP TRIGGER tr1;
CREATE TRIGGER tr1 DELETE ON t1 BEGIN
SELECT * FROM sqlite_master;
END
}
} {0 {}}
do_test trig_cd-1.5 {
execsql {
BEGIN;
DROP TRIGGER tr2;
ROLLBACK;
DROP TRIGGER tr2;
}
} {}
do_test trig_cd-1.6 {
catchsql {
DROP TRIGGER biggles;
}
} {1 {no such trigger: biggles}}
do_test trig_cd-1.7 {
catchsql {
DROP TABLE t1;
DROP TRIGGER tr1;
}
} {1 {no such trigger: tr1}}
execsql {
CREATE TEMP TABLE temp_table(a);
}
do_test trig_cd-1.8 {
execsql {
CREATE TRIGGER temp_trig UPDATE ON temp_table BEGIN
SELECT * from sqlite_master;
END;
SELECT count(*) FROM sqlite_master WHERE name = 'temp_trig';
}
} {0}
do_test trig_cd-1.9 {
catchsql {
CREATE TRIGGER tr1 AFTER UPDATE ON sqlite_master BEGIN
SELECT * FROM sqlite_master;
END;
}
} {1 {cannot create trigger on system table: sqlite_master}}
# Check to make sure that a DELETE statement within the body of
# a trigger does not mess up the DELETE that caused the trigger to
# run in the first place.
#
do_test trig_cd-1.10 {
execsql {
create table t1(a,b);
insert into t1 values(1,'a');
insert into t1 values(2,'b');
insert into t1 values(3,'c');
insert into t1 values(4,'d');
create trigger r1 after delete on t1 for each row begin
delete from t1 WHERE a=old.a+2;
end;
delete from t1 where a in (1,3);
select * from t1;
drop table t1;
}
} {2 b 4 d}
do_test trig_cd-1.11 {
execsql {
create table t1(a,b);
insert into t1 values(1,'a');
insert into t1 values(2,'b');
insert into t1 values(3,'c');
insert into t1 values(4,'d');
create trigger r1 after update on t1 for each row begin
delete from t1 WHERE a=old.a+2;
end;
update t1 set b='x-' || b where a in (1,3);
select * from t1;
drop table t1;
}
} {1 x-a 2 b 4 d}
finish_test