ASSERT_TF_OK(status_);
  length = tf_writable_file::Tell(file, status_);
  ASSERT_EQ(length, 8);
  ASSERT_TF_OK(status_);
  tf_writable_file::Flush(file, status_);
  ASSERT_TF_OK(status_);
  ASSERT_TRUE(
      CompareWithServer(filepath, 0, 8, &gcs_file->gcs_client, status_));

  tf_writable_file::Close(file, status_);
  ASSERT_TF_OK(status_);
  tf_writable_file::Cleanup(file);

    TF_CreateDir(dirpath.c_str(), s);
    ASSERT_TF_OK(s) << "TF_CreateDir failed for " << dirpath << ": "
                    << TF_Message(s);

    ::tensorflow::string filepath =
        ::tensorflow::io::JoinPath(dirpath, "somefile.txt");
    TF_WritableFileHandle* handle;
    TF_NewWritableFile(filepath.c_str(), &handle, s);
    ASSERT_TF_OK(s) << "NewWritableFile failed for " << filepath << ": "