TEST_F(CApiFunctionTest, SameGradForTwoFunctions) {
  // Define the functions
  TF_Function* func1;
  TF_Function* func2;
  TF_Function* grad_func;
  DefineFunction("FooFunc1", &func1);
  DefineFunction("FooFunc2", &func2);
  DefineFunction("MyGrad", &grad_func);

  // Make grad_func be a gradient of func1 and func2
  TF_GraphCopyFunction(host_graph_, func1, grad_func, s_);
  ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);