# 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