sqlite/test/walvfs.test
dan ee8221859b Fix a test script problem in walvfs.test.
FossilOrigin-Name: 4c5076fbe42cc6447c47bfc202501f945f78bd716cbe8e33599c67b7d0956611
2020-12-04 16:26:25 +00:00

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# 2018 December 23
#
# 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 in
# "PRAGMA journal_mode=WAL" mode.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
source $testdir/lock_common.tcl
source $testdir/malloc_common.tcl
source $testdir/wal_common.tcl
set testprefix walvfs
ifcapable !wal {finish_test ; return }
db close
testvfs tvfs
tvfs script xSync
tvfs filter xSync
set ::sync_count 0
proc xSync {method file args} {
if {[file tail $file]=="test.db-wal"} {
incr ::sync_count
}
}
#-------------------------------------------------------------------------
# Test that if IOCAP_SEQUENTIAL is set, the wal-header is not synced to
# disk immediately after it is written.
#
sqlite3 db test.db -vfs tvfs
do_execsql_test 1.0 {
PRAGMA auto_vacuum = 0;
PRAGMA journal_mode = wal;
PRAGMA synchronous = normal;
CREATE TABLE t1(a, b, c);
INSERT INTO t1 VALUES(1, 2, 3);
INSERT INTO t1 VALUES(4, 5, 6);
INSERT INTO t1 VALUES(7, 8, 9);
PRAGMA wal_checkpoint;
} {wal 0 5 5}
set ::sync_count 0
do_test 1.1 {
execsql { INSERT INTO t1 VALUES(10, 11, 12) }
set ::sync_count
} 1
db close
tvfs devchar sequential
sqlite3 db test.db -vfs tvfs
do_execsql_test 1.2 {
PRAGMA synchronous = normal;
INSERT INTO t1 VALUES(13, 14, 15);
INSERT INTO t1 VALUES(16, 17, 18);
PRAGMA wal_checkpoint;
} {0 4 4}
set ::sync_count 0
do_test 1.3 {
execsql { INSERT INTO t1 VALUES(10, 11, 12) }
set ::sync_count
} 0
#-------------------------------------------------------------------------
# Test that "PRAGMA journal_size_limit" works in wal mode.
#
reset_db
do_execsql_test 2.0 {
PRAGMA journal_size_limit = 10000;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} {10000 wal}
do_test 2.1 {
expr [file size test.db-wal]>12000
} {1}
do_test 2.2 {
execsql {
PRAGMA wal_checkpoint;
INSERT INTO t1 VALUES(randomblob(750));
}
file size test.db-wal
} {10000}
do_test 2.3 {
execsql {
PRAGMA journal_size_limit = 8000;
PRAGMA wal_checkpoint;
INSERT INTO t1 VALUES(randomblob(750));
}
file size test.db-wal
} {8000}
#-------------------------------------------------------------------------
# Test that a checkpoint may be interrupted using sqlite3_interrupt().
# And that the error code is SQLITE_NOMEM, not SQLITE_INTERRUPT, if
# an OOM error occurs just before the sqlite3_interrupt() call.
#
reset_db
db close
sqlite3 db test.db -vfs tvfs
tvfs filter {}
do_execsql_test 3.0 {
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} {wal}
tvfs filter xWrite
tvfs script xWrite
set ::cnt 2
proc xWrite {method file args} {
if {[file tail $file]=="test.db"} {
incr ::cnt -1
if {$::cnt==0} {
sqlite3_interrupt db
}
}
return SQLITE_OK
}
do_catchsql_test 3.1 {
PRAGMA wal_checkpoint
} {1 interrupted}
set ::cnt 2
proc xWrite {method file args} {
if {[file tail $file]=="test.db"} {
incr ::cnt -1
if {$::cnt==0} {
sqlite3_memdebug_fail 1 -repeat 0
# For this test to pass, the following statement must call malloc() at
# least once. Even if the lookaside is enabled.
set ::xwrite_stmt_res [catchsql { SELECT hex(randomblob(4000)) }]
sqlite3_interrupt db
}
}
return SQLITE_OK
}
set ::xwrite_stmt_res ""
do_catchsql_test 3.2 {
PRAGMA wal_checkpoint
} {1 {out of memory}}
do_test 3.2.2 {
set ::xwrite_stmt_res
} {1 {out of memory}}
unset ::xwrite_stmt_res
#-------------------------------------------------------------------------
#
reset_db
db close
do_test 4.0 {
sqlite3 db test.db -vfs tvfs
execsql {
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} db
} {wal}
db close
tvfs filter xShmMap
tvfs script xShmMap
proc xShmMap {method file args} {
return SQLITE_READONLY
}
sqlite3 db test.db -vfs tvfs
do_catchsql_test 4.1 {
SELECT count(*) FROM t1
} {1 {attempt to write a readonly database}}
set ::cnt 5
tvfs filter {xShmMap xShmLock}
proc xShmMap {method file name args} {
switch -- $method {
xShmMap { return SQLITE_READONLY }
xShmLock {
if {$args == "{0 1 lock shared}"} {
incr ::cnt -1
if {$::cnt>0} { return SQLITE_BUSY }
}
}
}
return SQLITE_OK
}
do_catchsql_test 4.2 {
SELECT count(*) FROM t1
} {1 {attempt to write a readonly database}}
#-------------------------------------------------------------------------
#
reset_db
db close
sqlite3 db test.db -vfs tvfs
tvfs filter {}
do_execsql_test 5.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} {wal}
do_execsql_test 5.1 {
SELECT count(*) FROM t1
} {20}
do_test 5.2 {
vfs_set_readmark db main 1 100
vfs_set_readmark db main 2 100
vfs_set_readmark db main 3 100
vfs_set_readmark db main 4 100
} {100}
do_execsql_test 5.3 {
SELECT count(*) FROM t1
} {20}
do_test 5.3 {
list [vfs_set_readmark db main 1] \
[vfs_set_readmark db main 2] \
[vfs_set_readmark db main 3] \
[vfs_set_readmark db main 4]
} {24 100 100 100}
tvfs script xShmLock
tvfs filter xShmLock
set ::cnt 20
proc xShmLock {args} {
incr ::cnt -1
if {$::cnt>0} { return SQLITE_BUSY }
return SQLITE_OK
}
do_test 5.4 {
vfs_set_readmark db main 1 100
execsql { SELECT count(*) FROM t1 }
} {20}
vfs_set_readmark db main 1 100
vfs_set_readmark db main 2 100
vfs_set_readmark db main 3 100
vfs_set_readmark db main 4 100
tvfs script xShmMapLock
tvfs filter {xShmLock xShmMap}
proc xShmMapLock {method args} {
if {$method=="xShmMap"} {
return "SQLITE_READONLY"
}
return SQLITE_BUSY
}
sqlite3 db2 test.db -vfs tvfs
breakpoint
do_test 5.5 {
list [catch { execsql { SELECT count(*) FROM t1 } db2 } msg] $msg
} {1 {attempt to write a readonly database}}
tvfs filter {}
vfs_set_readmark db main 1 1
do_test 5.6 {
list [catch { execsql { SELECT count(*) FROM t1 } db2 } msg] $msg
} {0 20}
db2 close
db close
#-------------------------------------------------------------------------
# Cause an SQLITE_PROTOCOL while attempting to restart the wal file.
#
reset_db
tvfs filter {}
db close
sqlite3 db test.db -vfs tvfs
do_execsql_test 6.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} {wal}
do_test 6.1 {
execsql { PRAGMA wal_checkpoint }
set {} {}
} {}
tvfs filter xShmLock
tvfs script xShmLock
set ::flag 0
proc xShmLock {method file handle spec} {
if {$::flag && [lrange $spec 2 end]=="lock shared"} {
return SQLITE_BUSY
}
if {$spec=="3 1 unlock shared"} {
set ::flag 1
}
return SQLITE_OK
}
puts "# WARNING: This next test takes around 12 seconds"
do_catchsql_test 6.2 {
INSERT INTO t1 VALUES(1);
} {1 {locking protocol}}
#-------------------------------------------------------------------------
# Check that a checkpoint fails if it cannot get the CHECKPOINTER lock
#
reset_db
tvfs filter {}
db close
sqlite3 db test.db -vfs tvfs
do_execsql_test 7.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS (
SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20
)
INSERT INTO t1 SELECT randomblob(750) FROM s;
} {wal}
tvfs script xShmLock
tvfs filter xShmLock
proc xShmLock {method file handle spec} {
if {$spec=="1 1 lock exclusive"} {
return SQLITE_BUSY
}
return SQLITE_OK
}
do_execsql_test 7.1 {
PRAGMA wal_checkpoint
} {1 -1 -1}
#-------------------------------------------------------------------------
# Check that the page cache is correctly flushed if a checkpointer using
# a version 2 VFS makes a checkpoint with an out-of-date cache.
#
reset_db
testvfs tvfs2 -iversion 2
db close
sqlite3 db test.db -vfs tvfs2
do_execsql_test 8.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS ( SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20 )
INSERT INTO t1 SELECT randomblob(75) FROM s;
} {wal}
do_execsql_test 8.1 { SELECT count(*) FROM t1 } {20}
do_test 8.2 {
sqlite3 db2 test.db -vfs tvfs2
execsql {
INSERT INTO t1 VALUES(randomblob(75));
} db2
db2 close
} {}
do_execsql_test 8.3 {
PRAGMA wal_checkpoint;
SELECT count(*) FROM t1
} {0 5 5 21}
db close
tvfs2 delete
#-------------------------------------------------------------------------
reset_db
db close
sqlite3 db test.db -vfs tvfs
do_execsql_test 9.0 {
PRAGMA auto_vacuum = 0;
PRAGMA page_size = 1024;
CREATE TABLE t1(x);
PRAGMA journal_mode = wal;
WITH s(i) AS ( SELECT 1 UNION ALL SELECT i+1 FROM s LIMIT 20 )
INSERT INTO t1 SELECT randomblob(75) FROM s;
} {wal}
sqlite3 db2 test.db -vfs tvfs
tvfs filter {xShmMap xShmLock}
tvfs script xShmMap
proc xShmMap {method file handle args} {
switch -- $method {
xShmMap {
return "SQLITE_READONLY_CANTINIT"
}
xShmLock {
if {$args=="{3 1 lock shared}"} {
return "SQLITE_IOERR"
}
}
}
}
do_test 9.1 {
catchsql { SELECT count(*) FROM t1 } db2
} {1 {disk I/O error}}
db close
db2 close
tvfs delete
finish_test