'Check that malformed xml loads as an ErrorDescriptor.'

def test_fallback(self):

    bad_xml = u'<sequential    display_name="oops\u2603"><video    url="hi"></sequential>'
    system = self.get_system()
    descriptor = system.process_xml(bad_xml)
    self.assertEqual(descriptor.__class__.__name__, 'ErrorDescriptorWithMixins')
