public function testSerializeUnserializeRetainsErrors()
{
$data = $this->getMock('Horde_Kolab_Storage_Object_Writer');
$object = new Horde_Kolab_Storage_Object();
$headers = $this->getMock('Horde_Mime_Headers');
$headers->expects($this->once())->method('getValue')->with('X-Kolab-Type')->will($this->returnValue('application/x-vnd.kolab.note'));
$this->folder->expects($this->once())->method('getType')->will($this->returnValue('event'));
$this->folder->expects($this->once())->method('getPath')->will($this->returnValue('INBOX/Calendar'));
$this->driver->expects($this->once())->method('fetchHeaders')->with('INBOX/Calendar', '1')->will($this->returnValue($headers));
$object->setDriver($this->driver);
$object->load('1', $this->folder, $data, $this->getMultipartMimeMessage('application/x-vnd.kolab.task'));
$new_object = new Horde_Kolab_Storage_Object();
$new_object->unserialize($object->serialize());
$this->assertContains(Horde_Kolab_Storage_Object::ERROR_MISSING_KOLAB_PART, array_keys($new_object->getParseErrors()));
}