'If the sizes of disk offerings are not configurable and there
are no disk offerings with the requested size, an exception should
be thrown.'

def test_create_volume_no_noncustomized_offering_with_size(self):

    location = self.driver.list_locations()[0]
    self.assertRaises(LibcloudError, self.driver.create_volume, 'vol-0', location, 11)
