sqlite3/test/sync.test

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2023-06-27 18:34:42 +08:00
# 2005 August 28
#
# 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.
#
# This file implements tests to verify that fsync is disabled when
# pragma synchronous=off even for multi-database commits.
#
set testdir [file dirname $argv0]
source $testdir/tester.tcl
#
# These tests are only applicable when pager pragma are
# enabled. Also, since every test uses an ATTACHed database, they
# are only run when ATTACH is enabled.
#
ifcapable !pager_pragmas||!attach {
finish_test
return
}
if {[atomic_batch_write test.db]} {
finish_test
return
}
set sqlite_sync_count 0
proc cond_incr_sync_count {adj} {
global sqlite_sync_count
if {$::tcl_platform(platform) == "windows"} {
incr sqlite_sync_count $adj
} else {
ifcapable !dirsync {
incr sqlite_sync_count $adj
}
}
}
do_test sync-1.1 {
set sqlite_sync_count 0
forcedelete test2.db
forcedelete test2.db-journal
execsql {
PRAGMA fullfsync=OFF;
CREATE TABLE t1(a,b);
ATTACH DATABASE 'test2.db' AS db2;
CREATE TABLE db2.t2(x,y);
}
cond_incr_sync_count 2
set sqlite_sync_count
} 8
ifcapable pager_pragmas {
do_test sync-1.2 {
set sqlite_sync_count 0
execsql {
PRAGMA main.synchronous=on;
PRAGMA db2.synchronous=on;
BEGIN;
INSERT INTO t1 VALUES(1,2);
INSERT INTO t2 VALUES(3,4);
COMMIT;
}
cond_incr_sync_count 4
set sqlite_sync_count
} 9
}
do_test sync-1.3 {
set sqlite_sync_count 0
execsql {
PRAGMA main.synchronous=full;
PRAGMA db2.synchronous=full;
BEGIN;
INSERT INTO t1 VALUES(3,4);
INSERT INTO t2 VALUES(5,6);
COMMIT;
}
cond_incr_sync_count 4
set sqlite_sync_count
} 11
ifcapable pager_pragmas {
if {[permutation]!="journaltest"} {
do_test sync-1.4 {
set sqlite_sync_count 0
execsql {
PRAGMA main.synchronous=off;
PRAGMA db2.synchronous=off;
BEGIN;
INSERT INTO t1 VALUES(5,6);
INSERT INTO t2 VALUES(7,8);
COMMIT;
}
set sqlite_sync_count
} 0
}
}
finish_test