if (!dims.empty()) {
    TF_SetAttrShape(desc, "shape", dims.data(), dims.size());
  }
  *op = TF_FinishOperation(desc, s);
  ASSERT_EQ(TF_OK, TF_GetCode(s)) << TF_Message(s);
  ASSERT_NE(*op, nullptr);
}

TF_Operation* Placeholder(TF_Graph* graph, TF_Status* s, const char* name,
                          TF_DataType dtype, const std::vector<int64_t>& dims) {
  TF_Operation* op;

  ASSERT_NE(func_, nullptr);

  // Verify that FunctionDef ArgDef has attributes.
  ASSERT_EQ(func_->record->fdef().arg_attr_size(), 1);
  auto arg_attrs = func_->record->fdef().arg_attr().find(0);
  ASSERT_NE(arg_attrs, func_->record->fdef().arg_attr().end());
  auto iter = arg_attrs->second.attr().find("_test_attr");
  ASSERT_NE(iter, arg_attrs->second.attr().end());

  TF_Operation* vec3 = Const(vec3_tensor.get(), graph, status, "vec3");
  ASSERT_EQ(TF_OK, TF_GetCode(status)) << TF_Message(status);

  TF_Operation* add = AddNoCheck(vec2, vec3, graph, status);
  ASSERT_NE(TF_OK, TF_GetCode(status));
  ASSERT_TRUE(add == nullptr);

  TF_DeleteGraph(graph);
  TF_DeleteStatus(status);
}

TEST(CAPI, GetOpDef) {
  TF_Status* status = TF_NewStatus();