sl@0: # 2007 April 24
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: # This file implements regression tests for SQLite library.
sl@0: #
sl@0: # This file implements tests to make sure SQLite treats a database
sl@0: # as readonly if its write version is set to  high.
sl@0: #
sl@0: # $Id: rdonly.test,v 1.2 2008/07/08 10:19:58 danielk1977 Exp $
sl@0: 
sl@0: set testdir [file dirname $argv0]
sl@0: source $testdir/tester.tcl
sl@0: 
sl@0: 
sl@0: # Create a database.
sl@0: #
sl@0: do_test rdonly-1.1 {
sl@0:   execsql {
sl@0:     CREATE TABLE t1(x);
sl@0:     INSERT INTO t1 VALUES(1);
sl@0:     SELECT * FROM t1;
sl@0:   }
sl@0: } {1}
sl@0: 
sl@0: # Changes the write version from 1 to 2.  Verify that the database
sl@0: # can be read but not written.
sl@0: #
sl@0: do_test rdonly-1.2 {
sl@0:   db close
sl@0:   hexio_get_int [hexio_read test.db 18 1]
sl@0: } 1
sl@0: do_test rdonly-1.3 {
sl@0:   hexio_write test.db 18 02
sl@0:   sqlite3 db test.db
sl@0:   execsql {
sl@0:     SELECT * FROM t1;
sl@0:   }
sl@0: } {1}
sl@0: do_test rdonly-1.4 {
sl@0:   catchsql {
sl@0:     INSERT INTO t1 VALUES(2)
sl@0:   }
sl@0: } {1 {attempt to write a readonly database}}
sl@0: 
sl@0: # Change the write version back to 1.  Verify that the database
sl@0: # is read-write again.
sl@0: #
sl@0: do_test rdonly-1.5 {
sl@0:   db close
sl@0:   hexio_write test.db 18 01
sl@0:   sqlite3 db test.db
sl@0:   catchsql {
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:     SELECT * FROM t1;
sl@0:   }
sl@0: } {0 {1 2}}
sl@0: 
sl@0: # Now, after connection [db] has loaded the database schema, modify the
sl@0: # write-version of the file (and the change-counter, so that the 
sl@0: # write-version is reloaded). This way, SQLite does not discover that
sl@0: # the database is read-only until after it is locked.
sl@0: #
sl@0: do_test rdonly-1.6 {
sl@0:   hexio_write test.db 18 02              ; # write-version
sl@0:   hexio_write test.db 24 11223344        ; # change-counter
sl@0:   catchsql {
sl@0:     INSERT INTO t1 VALUES(2);
sl@0:   }
sl@0: } {1 {attempt to write a readonly database}}
sl@0: 
sl@0: finish_test