'``parse_storage_string`` raises a ``ValueError`` when given a
string which is not in a valid format for parsing in to a quantity of
bytes.'

def test_invalid_volume_max_size_invalid_string(self):

    exception = self.assertRaises(ValueError, parse_storage_string, u'abcdef')
    self.assertEqual(exception.message, u"Value    'abcdef'    could    not    be    parsed    as    a    storage    quantity.")
