TFE_DeleteOp(comm_op);

  const string& fdef1 = FunctionWithErrorOp("TestNonCommUnavailable");
  TFE_ContextAddFunctionDef(ctx, fdef1.data(), fdef1.size(), status);
  TFE_Op* fn1 = TFE_NewOp(ctx, "FunctionWithTestNonCommUnavailable", status);
  CHECK_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);
  TFE_Execute(fn1, retval, &num_retvals, status);
  EXPECT_EQ(TF_INTERNAL, TF_GetCode(status)) << TF_Message(status);