@Test
public void testTail() {

    assertArrayEquals(new String[]{}, Collection.tail(new String[]{}));
    assertArrayEquals(new String[]{}, Collection.tail(new String[]{"1"}));
    assertArrayEquals(new String[]{"2"}, Collection.tail(new String[]{"1", "2"}));
    assertArrayEquals(new String[]{"2", "3"}, Collection.tail(new String[]{"1", "2", "3"}));
}