RunGraphsAndCompareOutputs(grad_outputs, expected_grad_outputs);
  }

  void TestGradientsError(bool grad_inputs_provided) {
    TF_Output inputs[1];
    TF_Output outputs[1];
    TF_Output grad_outputs[1];

    BuildErrorGraph(inputs, outputs);

    AddGradients(grad_inputs_provided, nullptr, inputs, 1, outputs, 1,
                 grad_outputs);

    std::string expected_msg =

            "been implemented yet.");
      }
      graph_outputs.push_back(output->output_);
    }

    auto s = TF_NewStatus();
    auto func = TF_GraphToFunction(graph_.get(), name_.data(), 0, -1, nullptr,
                                   inputs_.size(), inputs_.data(),
                                   graph_outputs.size(), graph_outputs.data(),
                                   nullptr, nullptr, name_.data(), s);