# 2007 April 2 # # 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 file is testing for correct handling of I/O errors # such as writes failing because the disk is full. # # The tests in this file use special facilities that are only # available in the SQLite test fixture. # # $Id: ioerr2.test,v 1.5 2007/05/23 16:23:09 danielk1977 Exp $ set testdir [file dirname $argv0] source $testdir/tester.tcl do_test ioerr2-1.1 { execsql { PRAGMA cache_size = 10; PRAGMA default_cache_size = 10; CREATE TABLE t1(a, b, PRIMARY KEY(a, b)); INSERT INTO t1 VALUES(randstr(400,400),randstr(400,400)); INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) FROM t1; -- 2 INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) FROM t1; -- 4 INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) FROM t1; -- 8 INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) FROM t1; -- 16 INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) FROM t1; -- 32 } } {} set ::cksum [execsql {SELECT md5sum(a, b) FROM t1}] proc check_db {testname} { # Make sure no I/O errors are simulated in this proc. set ::sqlite_io_error_hit 0 set ::sqlite_io_error_persist 0 set ::sqlite_io_error_pending 0 # Run an integrity-check. If "disk I/O error" is returned, the # pager must be in error state. In this case open a new database # connection. Otherwise, try a ROLLBACK, in case a transaction # is still active. set rc [catch {execsql {PRAGMA integrity_check}} msg] if {$rc && $msg eq "disk I/O error"} { db close sqlite3 db test.db set refcnt 0 } else { if {$rc || $msg ne "ok"} { error $msg } catch {execsql ROLLBACK} } # Check that the database checksum is still $::cksum, and that # the integrity-check passes. set ck [execsql {SELECT md5sum(a, b) FROM t1}] do_test ${testname}.cksum [list set ck $ck] $::cksum integrity_check ${testname}.integrity do_test ${testname}.refcnt { lindex [sqlite3_pager_refcounts db] 0 } 0 } check_db ioerr2-2 set sql { PRAGMA cache_size = 10; PRAGMA default_cache_size = 10; BEGIN; DELETE FROM t1 WHERE (oid%7)==0; INSERT INTO t1 SELECT randstr(400,400), randstr(400,400) WHERE (random()%7)==0; UPDATE t1 SET a = randstr(400,400), b = randstr(400,400) WHERE (random()%7)==0; ROLLBACK; } foreach bPersist [list 0 1] { set ::go 1 for {set ::N 1} {$::go} {incr ::N} { db close sqlite3 db test.db set ::sqlite_io_error_hit 0 set ::sqlite_io_error_persist $bPersist set ::sqlite_io_error_pending $::N foreach {::go res} [catchsql $sql] {} check_db ioerr2-3.$bPersist.$::N } } foreach bPersist [list 0 1] { set ::go 1 for {set ::N 1} {$::go} {incr ::N} { set ::sqlite_io_error_hit 0 set ::sqlite_io_error_persist $bPersist set ::sqlite_io_error_pending $::N foreach {::go res} [catchsql $sql] {} check_db ioerr2-4.[expr {$bPersist+2}].$::N } } finish_test