sl@0: # 2007 Oct 3
sl@0: #
sl@0: # The author disclaims copyright to this source code. In place of
sl@0: # a legal notice, here is a blessing:
sl@0: #
sl@0: #    May you do good and not evil.
sl@0: #    May you find forgiveness for yourself and forgive others.
sl@0: #    May you share freely, never taking more than you give.
sl@0: #
sl@0: #***********************************************************************
sl@0: #
sl@0: # This file is to test that ticket #2767 has been fixed.
sl@0: # Ticket #2767 is for a VDBE stack overflow on BEFORE
sl@0: # triggers that run RAISE(IGNORE).
sl@0: #
sl@0: # $Id: tkt2767.test,v 1.2 2008/07/12 14:52:21 drh Exp $
sl@0: #
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: do_test tkt2767-1.1 {
sl@0:   execsql {
sl@0:     -- Construct a table with many rows of data
sl@0:     CREATE TABLE t1(x);
sl@0:     INSERT INTO t1 VALUES(1);
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:     INSERT INTO t1 SELECT x+2 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+4 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+8 FROM t1;
sl@0:     INSERT INTO t1 SELECT x+16 FROM t1;
sl@0: 
sl@0:     -- BEFORE triggers that invoke raise(ignore).  The effect of
sl@0:     -- these triggers should be to make INSERTs, UPDATEs, and DELETEs
sl@0:     -- into no-ops.
sl@0:     CREATE TRIGGER r1 BEFORE UPDATE ON t1 BEGIN
sl@0:       SELECT raise(ignore);
sl@0:     END;
sl@0:     CREATE TRIGGER r2 BEFORE DELETE ON t1 BEGIN
sl@0:       SELECT raise(ignore);
sl@0:     END;
sl@0:     CREATE TRIGGER r3 BEFORE INSERT ON t1 BEGIN
sl@0:       SELECT raise(ignore);
sl@0:     END;
sl@0: 
sl@0:     -- Verify the table content
sl@0:     SELECT count(*), sum(x) FROM t1;
sl@0:   }
sl@0: } {32 528}
sl@0: 
sl@0: # Try to delete all elements of the table.  This will invoke the
sl@0: # DELETE trigger 32 times, which should overflow the VDBE stack if
sl@0: # the problem of #2767 is not fixed.  If the problem is fixed, all
sl@0: # the deletes should be no-ops so the table should remain unchanged.
sl@0: #
sl@0: do_test tkt2767-1.2 {
sl@0:   execsql {
sl@0:     DELETE FROM t1 WHERE x>0;
sl@0:     SELECT count(*), sum(x) FROM t1;
sl@0:   }
sl@0: } {32 528}
sl@0: 
sl@0: # Try to update all elements of the table.  This will invoke the
sl@0: # UPDATE trigger 32 times, which should overflow the VDBE stack if
sl@0: # the problem of #2767 is not fixed.  If the problem is fixed, all
sl@0: # the updates should be no-ops so the table should remain unchanged.
sl@0: #
sl@0: do_test tkt2767-1.3 {
sl@0:   execsql {
sl@0:     UPDATE t1 SET x=x+1;
sl@0:     SELECT count(*), sum(x) FROM t1;
sl@0:   }
sl@0: } {32 528}
sl@0: 
sl@0: # Invoke the insert trigger.  The insert trigger was working
sl@0: # even prior to the fix of #2767.  But it seems good to go ahead
sl@0: # and verify that it works.
sl@0: #
sl@0: do_test tkt2767-1.4 {
sl@0:   execsql {
sl@0:     INSERT INTO t1 SELECT x+32 FROM t1;
sl@0:     SELECT count(*), sum(x) FROM t1;
sl@0:   }
sl@0: } {32 528}
sl@0: 
sl@0: 
sl@0: 
sl@0: finish_test