/**
  * Check that you can set and get the changes to an offset key.
  */
 public function testOffsetSetGet()
 {
     $this->_arrayCollection = new Messaging\ArrayCollection($this->_data);
     $data = array('fooSet' => 'fooSet2', 'barSet' => 'barSet2');
     $this->_arrayCollection->offsetSet(1, $data);
     $this->assertEquals($data, $this->_arrayCollection->offsetGet(1));
 }