# 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 # Do not use a codec for tests in this file, as the database file is # manipulated directly using tcl scripts (using the [hexio_write] command). # do_not_use_codec # Create a database. # do_test rdonly-1.1 { execsql { CREATE TABLE t1(x); INSERT INTO t1 VALUES(1); SELECT * FROM t1; } } {1} do_test rdonly-1.1.1 { sqlite3_db_readonly db main } {0} # Changes the write version from 1 to 3. 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 03 sqlite3 db test.db execsql { SELECT * FROM t1; } } {1} do_test rdonly-1.3.1 { sqlite3_db_readonly db main } {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. # set ro_version 02 ifcapable wal { set ro_version 03 } do_test rdonly-1.6 { hexio_write test.db 18 $ro_version ; # 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