public function siblingsWillReturnFirstNodeForSecondAndThirdNodeInLevel()
{
$context = array($this->secondNodeInLevel, $this->thirdNodeInLevel);
$q = new FlowQuery($context);
$operation = new SiblingsOperation();
$operation->evaluate($q, array());
$output = $q->getContext();
$this->assertEquals(array($this->firstNodeInLevel), $output);
}