# 2005 September 19

 #

 # 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.  The

 # focus of this script is testing the ALTER TABLE statement and

 # specifically out-of-memory conditions within that command.

 #

 # $Id: altermalloc.test,v 1.9 2008/08/04 20:13:27 drh Exp $

 #

 set testdir [file dirname $argv0]

 source $testdir/tester.tcl

 # If SQLITE_OMIT_ALTERTABLE is defined, omit this file.

 ifcapable !altertable||!memdebug {

   finish_test

   return

 }

 source $testdir/malloc_common.tcl

 do_malloc_test altermalloc-1 -tclprep {

   db close

 } -tclbody {

   if {[catch {sqlite3 db test.db}]} {

     error "out of memory"

   }

   sqlite3_db_config_lookaside db 0 0 0

   sqlite3_extended_result_codes db 1

 } -sqlbody {

   CREATE TABLE t1(a int);

   ALTER TABLE t1 ADD COLUMN b INTEGER DEFAULT NULL;

   ALTER TABLE t1 ADD COLUMN c TEXT DEFAULT 'default-text';

   ALTER TABLE t1 RENAME TO t2;

 }

 # Test malloc() failure on an ALTER TABLE on a virtual table.

 #

 ifcapable vtab {

   do_malloc_test altermalloc-vtab -tclprep {

     sqlite3 db2 test.db 

     sqlite3_db_config_lookaside db2 0 0 0

     sqlite3_extended_result_codes db2 1

     register_echo_module [sqlite3_connection_pointer db2]

     db2 eval {

       CREATE TABLE t1(a, b VARCHAR, c INTEGER);

       CREATE VIRTUAL TABLE t1echo USING echo(t1);

     }

     db2 close

     register_echo_module [sqlite3_connection_pointer db]

   } -tclbody {

     set rc [catch {db eval { ALTER TABLE t1echo RENAME TO t1_echo }} msg]

     if {$msg eq "vtable constructor failed: t1echo"} {

       set msg "out of memory"

     }

     if {$rc} {

       error $msg

     }

   }

 }

 finish_test