sync.test

来自「pda上的数据库,速度快,体积小,做朋友的福音」· TEST 代码 · 共 82 行

# 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.
#
# $Id: sync.test,v 1.1 2005/08/27 16:36:49 drh Exp $

set testdir [file dirname $argv0]
source $testdir/tester.tcl

#
# These tests are only applicable on unix when pager pragma are
# enabled.
#
if {$::tcl_platform(platform)!="unix"} {
  finish_test
}
ifcapable !pager_pragmas {
  finish_test
}

do_test sync-1.1 {
  set sqlite_sync_count 0
  file delete -force test2.db
  file delete -force test2.db-journal
  execsql {
    CREATE TABLE t1(a,b);
    ATTACH DATABASE 'test2.db' AS db2;
    CREATE TABLE db2.t2(x,y);
  }
  set sqlite_sync_count
} 8
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;
  }
  set sqlite_sync_count
} 8
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;
  }
  set sqlite_sync_count
} 10
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