expected->subgraph_metadata()->GetAs<SubgraphMetadata>(i);
    if (expected_subgraph_metadata->op_metadata() == nullptr &&
        result_subgraph_metadata->op_metadata() == nullptr) {
      return;
    }
    ASSERT_EQ(expected_subgraph_metadata->op_metadata()->size(),
              result_subgraph_metadata->op_metadata()->size());
    for (int j = 0; j < expected_subgraph_metadata->op_metadata()->size();
         ++j) {