auto oper = TF_FinishOperation(desc, s_);
  ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);

  EXPECT_TF_META("v", 2, TF_ATTR_SHAPE, 8);
  TF_Buffer* values[2];
  TF_OperationGetAttrTensorShapeProtoList(oper, "v", values, 2, s_);
  EXPECT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  for (int i = 0; i < 2; ++i) {
    int le = list_lens[i];
    int la = values[i]->length;