@Test
public void customPropertiesValues() {

  Configuration config = new Configuration();
  config.set(GCS_ROOT_URL.getKey(), "https://unit-test-storage.googleapis.com/");
  config.set(GCS_SERVICE_PATH.getKey(), "storage/dev_v1/");
  GoogleCloudStorageOptions options =
      GoogleHadoopFileSystemConfiguration.getGcsOptionsBuilder(config).build();
  assertThat(options.getStorageRootUrl()).isEqualTo("https://unit-test-storage.googleapis.com/");
  assertThat(options.getStorageServicePath()).isEqualTo("storage/dev_v1/");
}