Mock getProcessesForReindex() in Mage_Index_Block_Adminhtml_Notifications to prevent the following Exception: Zend_Db_Select_Exception: You cannot define a correlation name 'e' more than once

gistfile1.txt

 /**
   * Created by Andreas Penz.
   * Date: 24.06.14
   * Time: 17:18
   */
protected function mockNotifications()
{
    $mock = $this->getBlockMock('index/adminhtml_notifications', array('getProcessesForReindex'));

    $mock->expects($this->any())
        ->method('getProcessesForReindex')
        ->will($this->returnValue(array()));

    $this->replaceByMock('block', 'index/adminhtml_notifications', $mock);
}