inputs_.push_back({placeholder, 0});
    }

    original_graph_description_ = GraphDebugString();

    params_ = std::make_unique<TF_WhileParams>(
        TF_NewWhile(graph_, &inputs_[0], inputs_.size(), s_));
    ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
    ASSERT_EQ(original_graph_description_, GraphDebugString())
        << "TF_NewWhile() altered graph";

    params_->name = "test_loop";