*/
  protected final File createTempDir() throws IOException {
    File tempFile = File.createTempFile("IoTestCase", "");
    if (!tempFile.delete() || !tempFile.mkdir()) {
      throw new IOException("failed to create temp dir");
    }
    filesToDelete.add(tempFile);
    return tempFile;
  }

  /**

    // Check that we can find a resource if it is visible to the context class
    // loader, even if it is not visible to the loader of the Resources class.

    File tempFile = createTempFile();
    PrintWriter writer = new PrintWriter(tempFile, "UTF-8");
    writer.println("rud a chur ar an méar fhada");
    writer.close();

    // First check that we can't find it without setting the context loader.

   */
  protected final File createTempDir() throws IOException {
    File tempFile = File.createTempFile("IoTestCase", "");
    if (!tempFile.delete() || !tempFile.mkdir()) {
      throw new IOException("failed to create temp dir");
    }
    filesToDelete.add(tempFile);
    return tempFile;
  }

  /**

    // Check that we can find a resource if it is visible to the context class
    // loader, even if it is not visible to the loader of the Resources class.

    File tempFile = createTempFile();
    PrintWriter writer = new PrintWriter(tempFile, "UTF-8");
    writer.println("rud a chur ar an méar fhada");
    writer.close();

    // First check that we can't find it without setting the context loader.

    WritableByteChannel outChannel = Channels.newChannel(out);

    File testFile = createTempFile();
    byte[] dummyData = newPreFilledByteArray(chunkSize);
    try (FileOutputStream fos = new FileOutputStream(testFile)) {
      for (int i = 0; i < 500; i++) {
        fos.write(dummyData);
      }
    }
    try (ReadableByteChannel inChannel = new RandomAccessFile(testFile, "r").getChannel()) {
      ByteStreams.copy(inChannel, outChannel);
    }

    WritableByteChannel outChannel = Channels.newChannel(out);

    File testFile = createTempFile();
    byte[] dummyData = newPreFilledByteArray(chunkSize);
    try (FileOutputStream fos = new FileOutputStream(testFile)) {
      for (int i = 0; i < 500; i++) {
        fos.write(dummyData);
      }
    }
    try (ReadableByteChannel inChannel = new RandomAccessFile(testFile, "r").getChannel()) {
      ByteStreams.copy(inChannel, outChannel);
    }