testForm.getElement("myDateTime").setConstraint(new AfterTodayConstraint(false));
StandardServletInputData input = new StandardServletInputData(request);
input.pushScope("testForm");
testForm._getWidget().update(input);
input.popScope();
assertTrue("Test form must not be valid after reading from request", !testForm.convertAndValidate());
request = new MockHttpServletRequest();