ReadableByteChannel inChannel = Channels.newChannel(new ByteArrayInputStream(expected));
    ByteStreams.copy(inChannel, outChannel);
    assertThat(out.toByteArray()).isEqualTo(expected);
  }


  public void testCopyFileChannel() throws IOException {
    final int chunkSize = 14407; // Random prime, unlikely to match any internal chunk size
    ByteArrayOutputStream out = new ByteArrayOutputStream();