* a total combined length of {@code totalLen} bytes) followed by all bytes remaining in the given
   * input stream.
   */
  private static byte[] toByteArrayInternal(InputStream in, Queue<byte[]> bufs, int totalLen)
      throws IOException {
    // Roughly size to match what has been read already. Some file systems, such as procfs, return 0

  }

  public void testToByteArray_withSize_givenSizeOneSmallerThanActual() throws IOException {
    InputStream in = new ByteArrayInputStream(PRE_FILLED_100);
    // this results in toByteArrayInternal being called when the stream is actually exhausted
    byte[] b = ByteStreams.toByteArray(in, 99);
    assertThat(b).isEqualTo(PRE_FILLED_100);
  }

  }

  public void testToByteArray_withSize_givenSizeOneSmallerThanActual() throws IOException {
    InputStream in = new ByteArrayInputStream(PRE_FILLED_100);
    // this results in toByteArrayInternal being called when the stream is actually exhausted
    byte[] b = ByteStreams.toByteArray(in, 99);
    assertThat(b).isEqualTo(PRE_FILLED_100);
  }