@Test
  public void lastModifiedHeader() throws Exception {
    handler = new RequestHandler() {

      @Override
      public void handle(Request request, HttpServletResponse response) {
        response.setStatus(HTTP_OK);
        response.setDateHeader("Last-Modified", 555000);
      }
    };
    assertEquals(555000, get(url).lastModified());
  }
Verify 'Last-Modified' header

@throws Exception
lib/src/test/java/com/github/kevinsawicki/http/HttpRequestTest.java