  @Test
  public void testBuildVaadlets() {

    VaadletsBuilder.build(new Vaadlets().withRootComponent(new VerticalLayout()
        .withHeight("100px")
        .withWidth("100px")
        .withStyleName("foobar")
        .withComponents(
            new Button().withCaption("hustensaft").withAlignment(Alignment.MIDDLE_CENTER).withExpandRatio(1f))));
  }