absl::Status s = StatusFromTF_Status(status.get());
    CHECK_EQ(errors::OK, s.code()) << s.message();
  }
};

absl::Status RegisterGradients(GradientRegistry* registry) {
  TF_RETURN_IF_ERROR(RegisterNotDifferentiable(registry, "CheckNumerics"));
  return absl::OkStatus();
}

TEST_P(CppGradients, TestSetAttrString) {
  std::unique_ptr<TF_Status, decltype(&TF_DeleteStatus)> status(
      TF_NewStatus(), TF_DeleteStatus);

    return absl::InvalidArgumentError(absl::StrCat(
        "Provided null gradient_function for '", op_type, "'.\n",
        "If the intent is to treat this op as non-differentiable consider ",
        "using RegisterNotDifferentiable or ",
        "NotDifferentiableGradientFunction."));
  }
  return gradient_function->Compute(ctx_, output_gradients, result);
}

absl::Status TapeVSpace::BuildOnesLike(const TapeTensor& t,