// check if the list of comments is empty
tester.assertListView("comments", new ArrayList<>());
tester.assertComponent("commentForm", Form.class);
FormTester formTester = tester.newFormTester("commentForm");
formTester.setValue("text", "test-1");
formTester.submit();
tester.assertModelValue("comments:0:text", "test-1");
formTester = tester.newFormTester("commentForm");
formTester.setValue("text", "test-2");