@Test
public void testMkStringFull() {

    assertEquals("[]",      ACollectionHelper.mkString(Arrays.asList(),              "[", "#", "]"));
    assertEquals("[a]",     ACollectionHelper.mkString(Arrays.asList("a"),           "[", "#", "]"));
    assertEquals("[a#b#c]", ACollectionHelper.mkString(Arrays.asList("a", "b", "c"), "[", "#", "]"));
    assertEquals("<<>>",        ACollectionHelper.mkString(Arrays.asList(),              "<<", "?!", ">>"));
    assertEquals("<<a>>",       ACollectionHelper.mkString(Arrays.asList("a"),           "<<", "?!", ">>"));
    assertEquals("<<a?!b?!c>>", ACollectionHelper.mkString(Arrays.asList("a", "b", "c"), "<<", "?!", ">>"));
}