@Test
public void testGetTail() {

    CollectorFormatter f = new CollectorFormatter(
            "{0}{1}{2}{3}{4}{5}{6}{7}{8}",
            (Formatter) null,
            (Comparator<LogRecord>) null);
    assertTrue(f.getTail((Handler) null).length() != 0);
    assertTrue(f.getTail((Handler) null).length() != 0);
}