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# 2001 October 12
#
# 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: incrvacuum_ioerr.test,v 1.6 2008/07/12 14:52:20 drh Exp $
set testdir [file dirname $argv0]
source $testdir/tester.tcl
# If this build of the library does not support auto-vacuum, omit this
# whole file.
ifcapable {!autovacuum} {
finish_test
return
}
do_ioerr_test incrvacuum-ioerr-1 -cksum 1 -sqlprep {
PRAGMA auto_vacuum = 'incremental';
CREATE TABLE abc(a);
INSERT INTO abc VALUES(randstr(1500,1500));
} -sqlbody {
BEGIN;
CREATE TABLE abc2(a);
DELETE FROM abc;
PRAGMA incremental_vacuum;
COMMIT;
}
# do_ioerr_test incrvacuum-ioerr-3 -start 1 -cksum 1 -tclprep {
# db eval {
# PRAGMA auto_vacuum = 'full';
# PRAGMA cache_size = 10;
# BEGIN;
# CREATE TABLE abc(a, UNIQUE(a));
# }
# for {set ii 0} {$ii < 25} {incr ii} {
# db eval {INSERT INTO abc VALUES(randstr(1500,1500))}
# }
# db eval COMMIT
# } -sqlbody {
# BEGIN;
# DELETE FROM abc WHERE (oid%3)==0;
# INSERT INTO abc SELECT a || '1234567890' FROM abc WHERE oid%2;
# CREATE INDEX abc_i ON abc(a);
# DELETE FROM abc WHERE (oid%2)==0;
# DROP INDEX abc_i;
# COMMIT;
# }
do_ioerr_test incrvacuum-ioerr-2 -start 1 -cksum 1 -tclprep {
db eval {
PRAGMA auto_vacuum = 'full';
PRAGMA cache_size = 10;
BEGIN;
CREATE TABLE abc(a, UNIQUE(a));
}
for {set ii 0} {$ii < 25} {incr ii} {
db eval {INSERT INTO abc VALUES(randstr(1500,1500))}
}
db eval COMMIT
} -sqlbody {
BEGIN;
PRAGMA incremental_vacuum;
DELETE FROM abc WHERE (oid%3)==0;
PRAGMA incremental_vacuum;
INSERT INTO abc SELECT a || '1234567890' FROM abc WHERE oid%2;
PRAGMA incremental_vacuum;
CREATE INDEX abc_i ON abc(a);
DELETE FROM abc WHERE (oid%2)==0;
PRAGMA incremental_vacuum;
DROP INDEX abc_i;
PRAGMA incremental_vacuum;
COMMIT;
}
do_ioerr_test incrvacuum-ioerr-3 -start 1 -cksum 1 -tclprep {
db eval {
PRAGMA auto_vacuum = 'incremental';
BEGIN;
CREATE TABLE a(i integer, b blob);
INSERT INTO a VALUES(1, randstr(1500,1500));
INSERT INTO a VALUES(2, randstr(1500,1500));
}
db eval COMMIT
db eval {DELETE FROM a WHERE oid}
} -sqlbody {
PRAGMA incremental_vacuum(5);
} -cleanup {
sqlite3 db test.db
integrity_check incrvacuum-ioerr-2.$n.integritycheck
db close
}
ifcapable shared_cache {
catch { db close }
forcedelete test.db
set ::enable_shared_cache [sqlite3_enable_shared_cache 1]
# Create two connections to a single shared-cache:
#
sqlite3 db1 test.db
sqlite3 db2 test.db
# Create a database with around 20 free pages.
#
do_test incrvacuum-ioerr-4.0 {
execsql {
PRAGMA page_size = 1024;
PRAGMA locking_mode = exclusive;
PRAGMA auto_vacuum = 'incremental';
BEGIN;
CREATE TABLE a(i integer, b blob);
} db1
for {set ii 0} {$ii < 20} {incr ii} {
execsql { INSERT INTO a VALUES($ii, randstr(800,1500)); } db1
}
execsql COMMIT db1
execsql {DELETE FROM a WHERE oid} db1
} {}
set ::rc 1
for {set iTest 1} {$::rc && $iTest<2000} {incr iTest} {
# Figure out how big the database is and how many free pages it
# has before running incremental-vacuum.
#
set nFree [execsql {pragma freelist_count} db1]
set nPage [execsql {pragma page_count} db1]
puts "nFree=$nFree nPage=$nPage"
# Now run incremental-vacuum to vacuum 5 pages from the db file.
# The iTest'th I/O call is set to fail.
#
set ::sqlite_io_error_pending $iTest
set ::sqlite_io_error_persist 1
do_test incrvacuum-ioerr-4.$iTest.1 {
set ::rc [catch {execsql {pragma incremental_vacuum(5)} db1} msg]
expr {$::rc==0 || $msg eq "disk I/O error"}
} {1}
set ::sqlite_io_error_pending 0
set ::sqlite_io_error_persist 0
set ::sqlite_io_error_hit 0
set ::sqlite_io_error_hardhit 0
set nFree2 [execsql {pragma freelist_count} db1]
set nPage2 [execsql {pragma page_count} db1]
do_test incrvacuum-ioerr-4.$iTest.2 {
set shrink [expr {$nPage-$nPage2}]
expr {$shrink==0 || $shrink==5 || ($nFree<5 && $shrink==$nFree)}
} {1}
do_test incrvacuum-ioerr-4.$iTest.3 {
expr {$nPage - $nPage2}
} [expr {$nFree - $nFree2}]
}
# Close the two database connections and restore the default
# shared-cache mode setting.
#
db1 close
db2 close
sqlite3_enable_shared_cache $::enable_shared_cache
}
finish_test
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