@Test
  public void shouldBeAbleToConstructDescriptorFromString() throws Exception {
    final WebAppDescriptor web =
        Descriptors.importAs(WebAppDescriptor.class)
            .from(new ByteArrayInputStream(source.getBytes()));

    Assert.assertNotNull(web);

    Assert.assertEquals(1, web.getFilters().size());
    Assert.assertEquals(1, web.getFilterMappings().size());
  }