@Test
  public void testGetElementsWithClass() {
    Document doc =
        Jsoup.parse(
            "<div class='mellow yellow'><span class=mellow>Hello <b class='yellow'>Yellow!</b></span><p>Empty</p></div>");

    List<Element> els = doc.getElementsByClass("mellow");
    assertEquals(2, els.size());
    assertEquals("div", els.get(0).tagName());
    assertEquals("span", els.get(1).tagName());

    List<Element> els2 = doc.getElementsByClass("yellow");
    assertEquals(2, els2.size());
    assertEquals("div", els2.get(0).tagName());
    assertEquals("b", els2.get(1).tagName());

    List<Element> none = doc.getElementsByClass("solo");
    assertEquals(0, none.size());
  }