'``create_volume`` creates sparse files.'

def test_create_sparse(self):

    requested_size = self.minimum_allocatable_size
    volume = self.api.create_volume(dataset_id=uuid4(), size=requested_size)
    allocated_size = volume.size
    size = get_size_info(self.api, volume)
    self.assertEqual((0, allocated_size), (size.actual, size.reported))
