# 2010 April 19
#
# 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 $testdir/malloc_common.tcl
# If the library was compiled without WAL support, check that the
# "PRAGMA journal_mode=WAL" treats "WAL" as an unrecognized mode.
#
ifcapable !wal {
do_test walmode-0.1 {
execsql { PRAGMA journal_mode = wal }
} {delete}
do_test walmode-0.2 {
execsql { PRAGMA main.journal_mode = wal }
} {delete}
do_test walmode-0.3 {
execsql { PRAGMA main.journal_mode }
} {delete}
finish_test
return
}
do_test walmode-1.1 {
set sqlite_sync_count 0
execsql { PRAGMA page_size = 1024 }
execsql { PRAGMA journal_mode = wal }
} {wal}
do_test walmode-1.2 {
file size test.db
} {1024}
set expected_sync_count 3
if {$::tcl_platform(platform)!="windows"} {
ifcapable dirsync {
incr expected_sync_count
}
}
do_test walmode-1.3 {
set sqlite_sync_count
} $expected_sync_count
do_test walmode-1.4 {
file exists test.db-wal
} {0}
do_test walmode-1.5 {
execsql { CREATE TABLE t1(a, b) }
file size test.db
} {1024}
do_test walmode-1.6 {
file exists test.db-wal
} {1}
do_test walmode-1.7 {
db close
file exists test.db-wal
} {0}
# There is now a database file with the read and write versions set to 2
# in the file system. This file should default to WAL mode.
#
do_test walmode-2.1 {
sqlite3 db test.db
file exists test.db-wal
} {0}
do_test walmode-2.2 {
execsql { SELECT * FROM sqlite_master }
file exists test.db-wal
} {1}
do_test walmode-2.3 {
db close
file exists test.db-wal
} {0}
# If the first statement executed is "PRAGMA journal_mode = wal", and
# the file is already configured for WAL (read and write versions set
# to 2), then there should be no need to write the database. The
# statement should cause the client to connect to the log file.
#
set sqlite_sync_count 0
do_test walmode-3.1 {
sqlite3 db test.db
execsql { PRAGMA journal_mode = wal }
} {wal}
do_test walmode-3.2 {
list $sqlite_sync_count [file exists test.db-wal] [file size test.db-wal]
} {0 1 0}
# Test that changing back to journal_mode=persist works.
#
do_test walmode-4.1 {
execsql { INSERT INTO t1 VALUES(1, 2) }
execsql { PRAGMA journal_mode = persist }
} {persist}
do_test walmode-4.2 {
list [file exists test.db-journal] [file exists test.db-wal]
} {1 0}
do_test walmode-4.3 {
execsql { SELECT * FROM t1 }
} {1 2}
do_test walmode-4.4 {
db close
sqlite3 db test.db
execsql { SELECT * FROM t1 }
} {1 2}
do_test walmode-4.5 {
list [file exists test.db-journal] [file exists test.db-wal]
} {1 0}
# Test that nothing goes wrong if a connection is prevented from changing
# from WAL to rollback mode because a second connection has the database
# open. Or from rollback to WAL.
#
do_test walmode-4.6 {
sqlite3 db2 test.db
execsql { PRAGMA main.journal_mode } db2
} {delete}
do_test walmode-4.7 {
execsql { PRAGMA main.journal_mode = wal } db
} {wal}
do_test walmode-4.8 {
execsql { SELECT * FROM t1 } db2
} {1 2}
do_test walmode-4.9 {
catchsql { PRAGMA journal_mode = delete } db
} {1 {database is locked}}
do_test walmode-4.10 {
execsql { PRAGMA main.journal_mode } db
} {wal}
do_test walmode-4.11 {
db2 close
execsql { PRAGMA journal_mode = delete } db
} {delete}
do_test walmode-4.12 {
execsql { PRAGMA main.journal_mode } db
} {delete}
do_test walmode-4.13 {
list [file exists test.db-journal] [file exists test.db-wal]
} {0 0}
do_test walmode-4.14 {
sqlite3 db2 test.db
execsql {
BEGIN;
SELECT * FROM t1;
} db2
} {1 2}
do_test walmode-4.16 { execsql { PRAGMA main.journal_mode } db } {delete}
do_test walmode-4.17 { execsql { PRAGMA main.journal_mode } db2 } {delete}
do_test walmode-4.17 {
catchsql { PRAGMA main.journal_mode = wal } db
} {1 {database is locked}}
do_test walmode-4.18 {
execsql { PRAGMA main.journal_mode } db
} {delete}
catch { db close }
catch { db2 close }
# Test that it is not possible to change a temporary or in-memory database
# to WAL mode. WAL mode is for persistent file-backed databases only.
#
# walmode-5.1.*: Try to set journal_mode=WAL on [sqlite3 db :memory:] database.
# walmode-5.2.*: Try to set journal_mode=WAL on [sqlite3 db ""] database.
# walmode-5.3.*: Try to set temp.journal_mode=WAL.
#
do_test walmode-5.1.1 {
sqlite3 db :memory:
execsql { PRAGMA main.journal_mode }
} {memory}
do_test walmode-5.1.2 {
execsql { PRAGMA main.journal_mode = wal }
} {memory}
do_test walmode-5.1.3 {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
COMMIT;
SELECT * FROM t1;
PRAGMA main.journal_mode;
}
} {1 2 memory}
do_test walmode-5.1.4 {
execsql { PRAGMA main.journal_mode = wal }
} {memory}
do_test walmode-5.1.5 {
execsql {
INSERT INTO t1 VALUES(3, 4);
SELECT * FROM t1;
PRAGMA main.journal_mode;
}
} {1 2 3 4 memory}
if {$TEMP_STORE>=2} {
set tempJrnlMode memory
} else {
set tempJrnlMode delete
}
do_test walmode-5.2.1 {
sqlite3 db ""
execsql { PRAGMA main.journal_mode }
} $tempJrnlMode
do_test walmode-5.2.2 {
execsql { PRAGMA main.journal_mode = wal }
} $tempJrnlMode
do_test walmode-5.2.3 {
execsql {
BEGIN;
CREATE TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
COMMIT;
SELECT * FROM t1;
PRAGMA main.journal_mode;
}
} [list 1 2 $tempJrnlMode]
do_test walmode-5.2.4 {
execsql { PRAGMA main.journal_mode = wal }
} $tempJrnlMode
do_test walmode-5.2.5 {
execsql {
INSERT INTO t1 VALUES(3, 4);
SELECT * FROM t1;
PRAGMA main.journal_mode;
}
} [list 1 2 3 4 $tempJrnlMode]
do_test walmode-5.3.1 {
sqlite3 db test.db
execsql { PRAGMA temp.journal_mode }
} $tempJrnlMode
do_test walmode-5.3.2 {
execsql { PRAGMA temp.journal_mode = wal }
} $tempJrnlMode
do_test walmode-5.3.3 {
execsql {
BEGIN;
CREATE TEMP TABLE t1(a, b);
INSERT INTO t1 VALUES(1, 2);
COMMIT;
SELECT * FROM t1;
PRAGMA temp.journal_mode;
}
} [list 1 2 $tempJrnlMode]
do_test walmode-5.3.4 {
execsql { PRAGMA temp.journal_mode = wal }
} $tempJrnlMode
do_test walmode-5.3.5 {
execsql {
INSERT INTO t1 VALUES(3, 4);
SELECT * FROM t1;
PRAGMA temp.journal_mode;
}
} [list 1 2 3 4 $tempJrnlMode]
#-------------------------------------------------------------------------
# Test changing to WAL mode from journal_mode=off or journal_mode=memory
#
foreach {tn mode} {
1 off
2 memory
3 persist
4 delete
5 truncate
} {
do_test walmode-6.$tn {
faultsim_delete_and_reopen
execsql "
PRAGMA journal_mode = $mode;
PRAGMA journal_mode = wal;
"
} [list $mode wal]
}
db close
#-------------------------------------------------------------------------
# Test the effect of a "PRAGMA journal_mode" command being the first
# thing executed by a new connection. This means that the schema is not
# loaded when sqlite3_prepare_v2() is called to compile the statement.
#
do_test walmode-7.0 {
forcedelete test.db
sqlite3 db test.db
execsql {
PRAGMA journal_mode = WAL;
CREATE TABLE t1(a, b);
}
} {wal}
foreach {tn sql result} {
1 "PRAGMA journal_mode" wal
2 "PRAGMA main.journal_mode" wal
3 "PRAGMA journal_mode = delete" delete
4 "PRAGMA journal_mode" delete
5 "PRAGMA main.journal_mode" delete
6 "PRAGMA journal_mode = wal" wal
7 "PRAGMA journal_mode" wal
8 "PRAGMA main.journal_mode" wal
9 "PRAGMA journal_mode" wal
10 "PRAGMA main.journal_mode" wal
11 "PRAGMA main.journal_mode = delete" delete
12 "PRAGMA journal_mode" delete
13 "PRAGMA main.journal_mode" delete
14 "PRAGMA main.journal_mode = wal" wal
15 "PRAGMA journal_mode" wal
16 "PRAGMA main.journal_mode" wal
} {
do_test walmode-7.$tn {
db close
sqlite3 db test.db
execsql $sql
} $result
}
db close
#-------------------------------------------------------------------------
# Test the effect of a "PRAGMA journal_mode" command on an attached
# database.
#
faultsim_delete_and_reopen
do_execsql_test walmode-8.1 {
CREATE TABLE t1(a, b);
PRAGMA journal_mode = WAL;
ATTACH 'test.db2' AS two;
CREATE TABLE two.t2(a, b);
} {wal}
do_execsql_test walmode-8.2 { PRAGMA main.journal_mode } {wal}
do_execsql_test walmode-8.3 { PRAGMA two.journal_mode } {delete}
do_execsql_test walmode-8.4 { PRAGMA two.journal_mode = DELETE } {delete}
db close
sqlite3 db test.db
do_execsql_test walmode-8.5 { ATTACH 'test.db2' AS two } {}
do_execsql_test walmode-8.6 { PRAGMA main.journal_mode } {wal}
do_execsql_test walmode-8.7 { PRAGMA two.journal_mode } {delete}
do_execsql_test walmode-8.8 { INSERT INTO two.t2 DEFAULT VALUES } {}
do_execsql_test walmode-8.9 { PRAGMA two.journal_mode } {delete}
do_execsql_test walmode-8.10 { INSERT INTO t1 DEFAULT VALUES } {}
do_execsql_test walmode-8.11 { PRAGMA main.journal_mode } {wal}
do_execsql_test walmode-8.12 { PRAGMA journal_mode } {wal}
# Change to WAL mode on test2.db and make sure (in the tests that follow)
# that this mode change persists.
do_test walmode-8.x1 {
execsql {
PRAGMA two.journal_mode=WAL;
PRAGMA two.journal_mode;
}
} {wal wal}
db close
sqlite3 db test.db
do_execsql_test walmode-8.13 { PRAGMA journal_mode = WAL } {wal}
do_execsql_test walmode-8.14 { ATTACH 'test.db2' AS two } {}
do_execsql_test walmode-8.15 { PRAGMA main.journal_mode } {wal}
do_execsql_test walmode-8.16 { PRAGMA two.journal_mode } {wal}
do_execsql_test walmode-8.17 { INSERT INTO two.t2 DEFAULT VALUES } {}
do_execsql_test walmode-8.18 { PRAGMA two.journal_mode } {wal}
sqlite3 db2 test.db2
do_test walmode-8.19 { execsql { PRAGMA main.journal_mode } db2 } {wal}
db2 close
do_execsql_test walmode-8.20 { PRAGMA journal_mode = DELETE } {delete}
do_execsql_test walmode-8.21 { PRAGMA main.journal_mode } {delete}
do_execsql_test walmode-8.22 { PRAGMA two.journal_mode } {delete}
do_execsql_test walmode-8.21 { PRAGMA journal_mode = WAL } {wal}
do_execsql_test walmode-8.21 { PRAGMA main.journal_mode } {wal}
do_execsql_test walmode-8.22 { PRAGMA two.journal_mode } {wal}
finish_test