public function test_compare_same_squema_diff()
{
$dbVc = new Db();
$dbVc->setMaster(new DbConn($this->conf['devel']));
$dbVc->setSlave(new DbConn($this->conf['devel']));
$diff = $dbVc->diff('public');
$this->assertEquals("Already sync : db1\n", $diff);
}