public function testaddUsingOperatorResetsDefaultOperator()
 {
     $c = new Criteria();
     $c->addUsingOperator('foo1', 'bar1');
     $c->_or();
     $c->addUsingOperator('foo2', 'bar2');
     $c->addUsingOperator('foo3', 'bar3');
     $expected = 'SELECT  FROM  WHERE (foo1=:p1 OR foo2=:p2) AND foo3=:p3';
     $params = array();
     $result = BasePeer::createSelectSql($c, $params);
     $this->assertEquals($expected, $result);
 }