}

    public void test_formatFileSize() {
        assertEquals("0", FessFunctions.formatFileSize(0));
        assertEquals("1000", FessFunctions.formatFileSize(1000));
        assertEquals("976.6K", FessFunctions.formatFileSize(1000000));
        assertEquals("953.7M", FessFunctions.formatFileSize(1000000000));
        assertEquals("931.3G", FessFunctions.formatFileSize(1000000000000L));

        final Locale locale = ComponentUtil.getRequestManager().getUserLocale();
        if (locale == null) {
            return Locale.ROOT;
        }
        return locale;
    }

    public static String formatFileSize(final long value) {
        double target = value;
        String unit = ""; // TODO l10n?
        String format = "0.#";
        if (value < 1024) {
            format = "0";