# 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