}

  @Override
  public InputStream openStream() throws IOException {
    inputStreamOpened = true;
    return new RandomAmountInputStream(new In(), new Random());
  }

  private final class In extends TestInputStream {

    In() throws IOException {
      super(new ByteArrayInputStream(bytes), options);
    }

    @Override
    public void close() throws IOException {
      inputStreamClosed = true;