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# 2010 February 8
#
# 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 the operation of the library when
# recovering a database following a simulated system failure in
# "PRAGMA journal_mode=WAL" mode.
#
#
# These are 'warm-body' tests of database recovery used while developing
# the WAL code. They serve to prove that a few really simple cases work:
#
# walcrash-1.*: Recover a database.
# walcrash-2.*: Recover a database where the failed transaction spanned more
# than one page.
# walcrash-3.*: Recover multiple databases where the failed transaction
# was a multi-file transaction.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
ifcapable !wal {finish_test ; return }
db close
set seed 0
set REPEATS 100
# walcrash-1.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
do_test walcrash-1.$i.1 {
crashsql -delay 4 -file test.db-wal -seed [incr seed] {
PRAGMA journal_mode = WAL;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 1);
INSERT INTO t1 VALUES(2, 3);
INSERT INTO t1 VALUES(3, 6);
}
} {1 {child process exited abnormally}}
do_test walcrash-1.$i.2 {
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-1.$i.3
db close
do_test walcrash-1.$i.4 {
crashsql -delay 2 -file test.db-wal -seed [incr seed] {
INSERT INTO t1 VALUES(4, (SELECT sum(a) FROM t1) + 4);
INSERT INTO t1 VALUES(5, (SELECT sum(a) FROM t1) + 5);
}
} {1 {child process exited abnormally}}
do_test walcrash-1.$i.5 {
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-1.$i.6
do_test walcrash-1.$i.7 {
execsql { PRAGMA main.journal_mode }
} {wal}
db close
}
# walcrash-2.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
do_test walcrash-2.$i.1 {
crashsql -delay 5 -file test.db-wal -seed [incr seed] {
PRAGMA journal_mode = WAL;
CREATE TABLE t1(a PRIMARY KEY, b);
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(3, 4);
INSERT INTO t1 VALUES(5, 9);
}
} {1 {child process exited abnormally}}
do_test walcrash-2.$i.2 {
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-2.$i.3
db close
do_test walcrash-2.$i.4 {
crashsql -delay 2 -file test.db-wal -seed [incr seed] {
INSERT INTO t1 VALUES(6, (SELECT sum(a) FROM t1) + 6);
INSERT INTO t1 VALUES(7, (SELECT sum(a) FROM t1) + 7);
}
} {1 {child process exited abnormally}}
do_test walcrash-2.$i.5 {
sqlite3 db test.db
execsql { SELECT sum(a)==max(b) FROM t1 }
} {1}
integrity_check walcrash-2.$i.6
do_test walcrash-2.$i.6 {
execsql { PRAGMA main.journal_mode }
} {wal}
db close
}
# walcrash-3.*
#
# for {set i 1} {$i < $REPEATS} {incr i} {
# forcedelete test.db test.db-wal
# forcedelete test2.db test2.db-wal
#
# do_test walcrash-3.$i.1 {
# crashsql -delay 2 -file test2.db-wal -seed [incr seed] {
# PRAGMA journal_mode = WAL;
# ATTACH 'test2.db' AS aux;
# CREATE TABLE t1(a PRIMARY KEY, b);
# CREATE TABLE aux.t2(a PRIMARY KEY, b);
# BEGIN;
# INSERT INTO t1 VALUES(1, 2);
# INSERT INTO t2 VALUES(1, 2);
# COMMIT;
# }
# } {1 {child process exited abnormally}}
#
# do_test walcrash-3.$i.2 {
# sqlite3_wal db test.db
# execsql {
# ATTACH 'test2.db' AS aux;
# SELECT * FROM t1 EXCEPT SELECT * FROM t2;
# }
# } {}
# do_test walcrash-3.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
# do_test walcrash-3.$i.4 { execsql { PRAGMA aux.integrity_check } } {ok}
#
# db close
# }
# walcrash-4.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
forcedelete test2.db test2.db-wal
do_test walcrash-4.$i.1 {
crashsql -delay 4 -file test.db-wal -seed [incr seed] -blocksize 4096 {
PRAGMA journal_mode = WAL;
PRAGMA page_size = 1024;
CREATE TABLE t1(a PRIMARY KEY, b);
INSERT INTO t1 VALUES(1, 2);
INSERT INTO t1 VALUES(3, 4);
}
} {1 {child process exited abnormally}}
do_test walcrash-4.$i.2 {
sqlite3 db test.db
execsql {
SELECT * FROM t1 WHERE a = 1;
}
} {1 2}
do_test walcrash-4.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-4.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
# walcrash-5.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
forcedelete test2.db test2.db-wal
do_test walcrash-5.$i.1 {
crashsql -delay 13 -file test.db-wal -seed [incr seed] -blocksize 4096 {
PRAGMA journal_mode = WAL;
PRAGMA page_size = 1024;
BEGIN;
CREATE TABLE t1(x PRIMARY KEY);
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4 */
COMMIT;
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 8 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 12 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 16 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 20 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 24 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 28 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 32 */
PRAGMA wal_checkpoint;
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
}
} {1 {child process exited abnormally}}
do_test walcrash-5.$i.2 {
sqlite3 db test.db
execsql { SELECT count(*)==33 OR count(*)==34 FROM t1 WHERE x != 1 }
} {1}
do_test walcrash-5.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-5.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
# walcrash-6.*
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
forcedelete test2.db test2.db-wal
do_test walcrash-6.$i.1 {
crashsql -delay 14 -file test.db-wal -seed [incr seed] -blocksize 512 {
PRAGMA journal_mode = WAL;
PRAGMA page_size = 1024;
BEGIN;
CREATE TABLE t1(x PRIMARY KEY);
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 VALUES(randomblob(900));
INSERT INTO t1 SELECT randomblob(900) FROM t1; /* 4 */
COMMIT;
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 8 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 12 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 16 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 20 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 24 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 28 */
INSERT INTO t1 SELECT randomblob(900) FROM t1 LIMIT 4; /* 32 */
PRAGMA wal_checkpoint;
INSERT INTO t1 VALUES(randomblob(9000));
INSERT INTO t1 VALUES(randomblob(9000));
INSERT INTO t1 VALUES(randomblob(9000));
INSERT INTO t1 VALUES(randomblob(9000));
}
} {1 {child process exited abnormally}}
do_test walcrash-6.$i.2 {
sqlite3 db test.db
execsql { SELECT count(*) BETWEEN 34 AND 36 FROM t1 WHERE x != 1 }
} {1}
do_test walcrash-6.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-6.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
#-------------------------------------------------------------------------
# This test case simulates a crash while checkpointing the database. Page
# 1 is one of the pages overwritten by the checkpoint. This is a special
# case because it means the content of page 1 may be damaged. SQLite will
# have to determine:
#
# (a) that the database is a WAL database, and
# (b) the database page-size
#
# based on the log file.
#
for {set i 1} {$i < $REPEATS} {incr i} {
forcedelete test.db test.db-wal
# Select a page-size for this test.
#
set pgsz [lindex {512 1024 2048 4096 8192 16384} [expr $i%6]]
do_test walcrash-7.$i.1 {
crashsql -delay 3 -file test.db -seed [incr seed] -blocksize 512 "
PRAGMA page_size = $pgsz;
PRAGMA journal_mode = wal;
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
COMMIT;
PRAGMA wal_checkpoint;
CREATE INDEX i1 ON t1(a);
PRAGMA wal_checkpoint;
"
} {1 {child process exited abnormally}}
do_test walcrash-7.$i.2 {
sqlite3 db test.db
execsql { SELECT b FROM t1 WHERE a = 1 }
} {2}
do_test walcrash-7.$i.3 { execsql { PRAGMA main.integrity_check } } {ok}
do_test walcrash-7.$i.4 { execsql { PRAGMA main.journal_mode } } {wal}
db close
}
finish_test
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