# 2007 April 24

#

# 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 treats a database

# as readonly if its write version is set to  high.

#

# $Id: rdonly.test,v 1.2 2008/07/08 10:19:58 danielk1977 Exp $

set testdir [file dirname $argv0]

source $testdir/tester.tcl

# Create a database.

#

do_test rdonly-1.1 {

  execsql {

    CREATE TABLE t1(x);

    INSERT INTO t1 VALUES(1);

    SELECT * FROM t1;

  }

} {1}

# Changes the write version from 1 to 2.  Verify that the database

# can be read but not written.

#

do_test rdonly-1.2 {

  db close

  hexio_get_int [hexio_read test.db 18 1]

} 1

do_test rdonly-1.3 {

  hexio_write test.db 18 02

  sqlite3 db test.db

  execsql {

    SELECT * FROM t1;

  }

} {1}

do_test rdonly-1.4 {

  catchsql {

    INSERT INTO t1 VALUES(2)

  }

} {1 {attempt to write a readonly database}}

# Change the write version back to 1.  Verify that the database

# is read-write again.

#

do_test rdonly-1.5 {

  db close

  hexio_write test.db 18 01

  sqlite3 db test.db

  catchsql {

    INSERT INTO t1 VALUES(2);

    SELECT * FROM t1;

  }

} {0 {1 2}}

# Now, after connection [db] has loaded the database schema, modify the

# write-version of the file (and the change-counter, so that the 

# write-version is reloaded). This way, SQLite does not discover that

# the database is read-only until after it is locked.

#

do_test rdonly-1.6 {

  hexio_write test.db 18 02              ; # write-version

  hexio_write test.db 24 11223344        ; # change-counter

  catchsql {

    INSERT INTO t1 VALUES(2);

  }

} {1 {attempt to write a readonly database}}

finish_test