/**
* @param PHPUnit_Framework_MockObject_MockObject|Zend_Db_Adapter_Abstract $adapter
* @depends testSetAddOrder
*/
public function testUnshiftOrder($adapter)
{
$this->_collection->setConnection($adapter);
$this->_collection->addOrder('some_field', Varien_Data_Collection::SORT_ORDER_ASC);
$this->_collection->unshiftOrder('other_field', Varien_Data_Collection::SORT_ORDER_ASC);
$this->_collection->load();
$selectOrders = $this->_collection->getSelect()->getPart(Zend_Db_Select::ORDER);
$this->assertEquals('other_field ASC', (string) array_shift($selectOrders));
$this->assertEquals('some_field ASC', (string) array_shift($selectOrders));
$this->assertEmpty(array_shift($selectOrders));
}