@Test
public void testDoStartTagInternalPanelElementEmpty() throws Exception {

    // set up
    request.setAttribute(ResultMessages.DEFAULT_MESSAGES_ATTRIBUTE_NAME,
            ResultMessages.info().add(ResultMessage.fromText("foo")));
    tag.setPanelElement("");
    int ret = tag.doStartTag();
    String expected = "<ul><li>foo</li></ul>";
    // assert
    assertThat(getOutput(), is(expected));
    assertThat(ret, is(TagSupport.EVAL_BODY_INCLUDE));
}