sync.test

sqlite-3.4.1,嵌入式数据库.是一个功能强大的开源数据库,给学习和研发以及小型公司的发展带来了全所未有的好处.

# 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 1.5 2006/02/11 01:25:51 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
  return
}
ifcapable !pager_pragmas {
  finish_test
  return
}

do_test sync-1.1 {
  set sqlite_sync_count 0
  file delete -force test2.db
  file delete -force test2.db-journal
  execsql {
    PRAGMA fullfsync=OFF;
    CREATE TABLE t1(a,b);
    ATTACH DATABASE 'test2.db' AS db2;
    CREATE TABLE db2.t2(x,y);
  }
  ifcapable !dirsync {
    incr sqlite_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;
    }
    ifcapable !dirsync {
      incr sqlite_sync_count 3
    }
    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;
  }
  ifcapable !dirsync {
    incr sqlite_sync_count 3
  }
  set sqlite_sync_count
} 10
ifcapable pager_pragmas {
  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