# 2005 August 18

 #

 # 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 implements regression tests for SQLite library.

 #

 # This file implements tests to increase coverage of trigger.c.

 #

 # $Id: trigger7.test,v 1.3 2008/08/11 18:44:58 drh Exp $

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 ifcapable {!trigger} {

   finish_test

   return

 }

 # Error messages resulting from qualified trigger names.

 #

 do_test trigger7-1.1 {

   execsql {

     CREATE TABLE t1(x, y);

   }

   catchsql {

     CREATE TEMP TRIGGER main.r1 AFTER INSERT ON t1 BEGIN

       SELECT 'no nothing';

     END

   }

 } {1 {temporary trigger may not have qualified name}}

 do_test trigger7-1.2 {

   catchsql {

     CREATE TRIGGER not_a_db.r1 AFTER INSERT ON t1 BEGIN

       SELECT 'no nothing';

     END

   }

 } {1 {unknown database not_a_db}}

 # When the UPDATE OF syntax is used, no code is generated for triggers

 # that do not match the update columns.

 #

 ifcapable explain {

   do_test trigger7-2.1 {

     execsql {

       CREATE TRIGGER r1 AFTER UPDATE OF x ON t1 BEGIN

         SELECT '___update_t1.x___';

       END;

       CREATE TRIGGER r2 AFTER UPDATE OF y ON t1 BEGIN

         SELECT '___update_t1.y___';

       END;

     }

     set txt [db eval {EXPLAIN UPDATE t1 SET x=5}]

     string match *___update_t1.x___* $txt

   } 1

   do_test trigger7-2.2 {

     set txt [db eval {EXPLAIN UPDATE t1 SET x=5}]

     string match *___update_t1.y___* $txt

   } 0

   do_test trigger7-2.3 {

     set txt [db eval {EXPLAIN UPDATE t1 SET y=5}]

     string match *___update_t1.x___* $txt

   } 0

   do_test trigger7-2.4 {

     set txt [db eval {EXPLAIN UPDATE t1 SET y=5}]

     string match *___update_t1.y___* $txt

   } 1

   do_test trigger7-2.5 {

     set txt [db eval {EXPLAIN UPDATE t1 SET rowid=5}]

     string match *___update_t1.x___* $txt

   } 0

   do_test trigger7-2.6 {

     set txt [db eval {EXPLAIN UPDATE t1 SET rowid=5}]

     string match *___update_t1.x___* $txt

   } 0

 }

 # Test the ability to create many triggers on the same table, then

 # selectively drop those triggers.

 #

 do_test trigger7-3.1 {

   execsql {

     CREATE TABLE t2(x,y,z);

     CREATE TRIGGER t2r1 AFTER INSERT ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r2 BEFORE INSERT ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r3 AFTER UPDATE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r4 BEFORE UPDATE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r5 AFTER DELETE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r6 BEFORE DELETE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r7 AFTER INSERT ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r8 BEFORE INSERT ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r9 AFTER UPDATE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r10 BEFORE UPDATE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r11 AFTER DELETE ON t2 BEGIN SELECT 1; END;

     CREATE TRIGGER t2r12 BEFORE DELETE ON t2 BEGIN SELECT 1; END;

     DROP TRIGGER t2r6;

   }

 } {}

 # This test corrupts the database file so it must be the last test

 # in the series.

 #

 do_test trigger7-99.1 {

   execsql {

     PRAGMA writable_schema=on;

     UPDATE sqlite_master SET sql='nonsense';

   }

   db close

   sqlite3 db test.db

   catchsql {

     DROP TRIGGER t2r5

   }

 } {1 {malformed database schema (t2r12) - near "nonsense": syntax error}}

 finish_test