# 2008 July 11

#

# 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 make sure SQLite does not crash or

# segfault if it sees a corrupt database file.  It specifically focuses

# on corrupt database headers.

#

# $Id: corruptA.test,v 1.1 2008/07/11 16:39:23 drh Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Create a database to work with.

#

do_test corruptA-1.1 {

  execsql {

    CREATE TABLE t1(x);

    INSERT INTO t1(x) VALUES(1);

  }

  expr {[file size test.db]>=1024}

} {1}

integrity_check corruptA-1.2

# Corrupt the file header in various ways and make sure the corruption

# is detected when opening the database file.

#

db close

file copy -force test.db test.db-template

do_test corruptA-2.1 {

  file copy -force test.db-template test.db

  hexio_write test.db 19 02   ;# the read format number

  sqlite3 db test.db

  catchsql {SELECT * FROM t1}  

} {1 {file is encrypted or is not a database}}

do_test corruptA-2.2 {

  db close

  file copy -force test.db-template test.db

  hexio_write test.db 21 41   ;# max embedded payload fraction

  sqlite3 db test.db

  catchsql {SELECT * FROM t1}  

} {1 {file is encrypted or is not a database}}

do_test corruptA-2.3 {

  db close

  file copy -force test.db-template test.db

  hexio_write test.db 22 1f   ;# min embedded payload fraction

  sqlite3 db test.db

  catchsql {SELECT * FROM t1}  

} {1 {file is encrypted or is not a database}}

do_test corruptA-2.4 {

  db close

  file copy -force test.db-template test.db

  hexio_write test.db 23 21   ;# min leaf payload fraction

  sqlite3 db test.db

  catchsql {SELECT * FROM t1}  

} {1 {file is encrypted or is not a database}}

finish_test