public:
  // We should specify openmode each time we call TempFile.
  TempFile(const std::string& temp_file_name, std::ios::openmode mode);
  TempFile(TempFile&& rhs);
  ~TempFile() override;
  const std::string getName() const;
  bool truncate();

 private:
  const std::string name_;
};

TempFile::TempFile(TempFile&& rhs)
    : std::fstream(std::move(rhs)), name_(std::move(rhs.name_)) {}

TempFile::~TempFile() {
  std::fstream::close();
  std::remove(name_.c_str());
}

const std::string TempFile::getName() const { return name_; }

bool TempFile::truncate() {
  std::fstream::close();
  std::fstream::open(name_, std::ios::binary | std::ios::out);
  return std::fstream::is_open();

  ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  EXPECT_EQ(TF_GraphGetFunctions(host_graph_, funcs, 2, s_), 2);
  ASSERT_EQ(TF_OK, TF_GetCode(s_)) << TF_Message(s_);
  if (GetName(funcs[0]) == GetName(func0)) {
    AssertEqual(func0, funcs[0]);
    AssertEqual(func1, funcs[1]);
  } else {
    AssertEqual(func0, funcs[1]);
    AssertEqual(func1, funcs[0]);
  }

  if (*offset == -1 || *offset == 0) {
    // UploadFile will automatically switch to resumable upload based on Client
    // configuration.
    auto metadata = gcs_client->UploadFile(outfile->getName(), bucket, object,
                                           gcs::Fields("size"));
    if (!metadata) {
      TF_SetStatusFromGCSStatus(metadata.status(), status);
      return;
    }
    if (*offset == 0) {