expected_st_a = sparse_tensor.SparseTensorValue(  # indices, values, shape
        np.empty((0, 2), dtype=np.int64),  # indices
        np.empty((0,), dtype=np.int64),  # sp_a is DT_INT64
        np.array([2, 0], dtype=np.int64))  # batch == 2, max_elems = 0