# 2007 Oct 3

#

# 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 is to test that ticket #2767 has been fixed.

# Ticket #2767 is for a VDBE stack overflow on BEFORE

# triggers that run RAISE(IGNORE).

#

# $Id: tkt2767.test,v 1.2 2008/07/12 14:52:21 drh Exp $

#

set testdir [file dirname $argv0]

source $testdir/tester.tcl

do_test tkt2767-1.1 {

  execsql {

    -- Construct a table with many rows of data

    CREATE TABLE t1(x);

    INSERT INTO t1 VALUES(1);

    INSERT INTO t1 VALUES(2);

    INSERT INTO t1 SELECT x+2 FROM t1;

    INSERT INTO t1 SELECT x+4 FROM t1;

    INSERT INTO t1 SELECT x+8 FROM t1;

    INSERT INTO t1 SELECT x+16 FROM t1;

    -- BEFORE triggers that invoke raise(ignore).  The effect of

    -- these triggers should be to make INSERTs, UPDATEs, and DELETEs

    -- into no-ops.

    CREATE TRIGGER r1 BEFORE UPDATE ON t1 BEGIN

      SELECT raise(ignore);

    END;

    CREATE TRIGGER r2 BEFORE DELETE ON t1 BEGIN

      SELECT raise(ignore);

    END;

    CREATE TRIGGER r3 BEFORE INSERT ON t1 BEGIN

      SELECT raise(ignore);

    END;

    -- Verify the table content

    SELECT count(*), sum(x) FROM t1;

  }

} {32 528}

# Try to delete all elements of the table.  This will invoke the

# DELETE trigger 32 times, which should overflow the VDBE stack if

# the problem of #2767 is not fixed.  If the problem is fixed, all

# the deletes should be no-ops so the table should remain unchanged.

#

do_test tkt2767-1.2 {

  execsql {

    DELETE FROM t1 WHERE x>0;

    SELECT count(*), sum(x) FROM t1;

  }

} {32 528}

# Try to update all elements of the table.  This will invoke the

# UPDATE trigger 32 times, which should overflow the VDBE stack if

# the problem of #2767 is not fixed.  If the problem is fixed, all

# the updates should be no-ops so the table should remain unchanged.

#

do_test tkt2767-1.3 {

  execsql {

    UPDATE t1 SET x=x+1;

    SELECT count(*), sum(x) FROM t1;

  }

} {32 528}

# Invoke the insert trigger.  The insert trigger was working

# even prior to the fix of #2767.  But it seems good to go ahead

# and verify that it works.

#

do_test tkt2767-1.4 {

  execsql {

    INSERT INTO t1 SELECT x+32 FROM t1;

    SELECT count(*), sum(x) FROM t1;

  }

} {32 528}

finish_test