SQLite-2.5.0-for-code-reading/test/trigger3.test

# 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 the RAISE() function.
#

set testdir [file dirname $argv0]
source $testdir/tester.tcl

# Test that we can cause ROLLBACK, FAIL and ABORT correctly
# catchsql { DROP TABLE tbl; }
catchsql { CREATE TABLE tbl (a, b, c) }

execsql {
    CREATE TRIGGER before_tbl_insert BEFORE INSERT ON tbl BEGIN SELECT CASE 
	WHEN (new.a = 4) THEN RAISE(IGNORE) END;
    END;

    CREATE TRIGGER after_tbl_insert AFTER INSERT ON tbl BEGIN SELECT CASE 
	WHEN (new.a = 1) THEN RAISE(ABORT,    'Trigger abort') 
	WHEN (new.a = 2) THEN RAISE(FAIL,     'Trigger fail') 
	WHEN (new.a = 3) THEN RAISE(ROLLBACK, 'Trigger rollback') END;
    END;
}
# ABORT
do_test trig-raise-1.1 {
    catchsql {
	BEGIN;
        INSERT INTO tbl VALUES (5, 5, 6);
        INSERT INTO tbl VALUES (1, 5, 6);
    }
} {1 {Trigger abort}}

do_test trig-raise-1.2 {
    execsql {
	SELECT * FROM tbl;
	ROLLBACK;
    }
} {5 5 6}

# FAIL
do_test trig-raise-2.1 {
    catchsql {
	BEGIN;
        INSERT INTO tbl VALUES (5, 5, 6);
        INSERT INTO tbl VALUES (2, 5, 6);
    }
} {1 {Trigger fail}}
do_test trig-raise-2.2 {
    execsql {
	SELECT * FROM tbl;
	ROLLBACK;
    }
} {5 5 6 2 5 6}
# ROLLBACK
do_test trig-raise-3.1 {
    catchsql {
	BEGIN;
        INSERT INTO tbl VALUES (5, 5, 6);
        INSERT INTO tbl VALUES (3, 5, 6);
    }
} {1 {Trigger rollback}}
do_test trig-raise-3.2 {
    execsql {
	SELECT * FROM tbl;
	ROLLBACK;
    }
} {}
# IGNORE
do_test trig-raise-4.1 {
    catchsql {
	BEGIN;
        INSERT INTO tbl VALUES (5, 5, 6);
        INSERT INTO tbl VALUES (4, 5, 6);
    }
} {0 {}}
do_test trig-raise-4.2 {
    execsql {
	SELECT * FROM tbl;
	ROLLBACK;
    }
} {5 5 6}

# Check that we can also do RAISE(IGNORE) for UPDATE and DELETE
execsql {DROP TABLE tbl;}
execsql {CREATE TABLE tbl (a, b, c);}
execsql {INSERT INTO tbl VALUES(1, 2, 3);}
execsql {INSERT INTO tbl VALUES(4, 5, 6);}
execsql {
    CREATE TRIGGER before_tbl_update BEFORE UPDATE ON tbl BEGIN
	SELECT CASE WHEN (old.a = 1) THEN RAISE(IGNORE) END;
    END;

    CREATE TRIGGER before_tbl_delete BEFORE DELETE ON tbl BEGIN
	SELECT CASE WHEN (old.a = 1) THEN RAISE(IGNORE) END;
    END;
}
do_test trig-raise-5.1 {
    execsql {
	UPDATE tbl SET c = 10;
	SELECT * FROM tbl;
    }
} {1 2 3 4 5 10}
do_test trig-raise-5.2 {
    execsql {
	DELETE FROM tbl;
	SELECT * FROM tbl;
    }
} {1 2 3}

# Check that RAISE(IGNORE) works correctly for nested triggers:
execsql {CREATE TABLE tbl2(a, b, c)}
execsql {
    CREATE TRIGGER after_tbl2_insert AFTER INSERT ON tbl2 BEGIN
	UPDATE tbl SET c = 10;
        INSERT INTO tbl2 VALUES (new.a, new.b, new.c);
    END;
}
do_test trig-raise-6 {
    execsql {
	INSERT INTO tbl2 VALUES (1, 2, 3);
	SELECT * FROM tbl2;
	SELECT * FROM tbl;
    }
} {1 2 3 1 2 3 1 2 3}

# Check that things also work for view-triggers
execsql {CREATE VIEW tbl_view AS SELECT * FROM tbl}
execsql {
    CREATE TRIGGER tbl_view_insert INSTEAD OF INSERT ON tbl_view BEGIN
	SELECT CASE WHEN (new.a = 1) THEN RAISE(ROLLBACK, 'View rollback')
	            WHEN (new.a = 2) THEN RAISE(IGNORE) 
	            WHEN (new.a = 3) THEN RAISE(ABORT, 'View abort') END;
    END;
}

do_test trig-raise-7.1 {
    catchsql {
	INSERT INTO tbl_view VALUES(1, 2, 3);
    }
} {1 {View rollback}}
do_test trig-raise-7.2 {
    catchsql {
	INSERT INTO tbl_view VALUES(2, 2, 3);
    }
} {0 {}}
do_test trig-raise-7.3 {
    catchsql {
	INSERT INTO tbl_view VALUES(3, 2, 3);
    }
} {1 {View abort}}

catchsql { DROP TABLE tbl; } 
catchsql { DROP TABLE tbl2; } 
catchsql { DROP VIEW tbl_view; }