@Test
	public void testEmptyLogin() {
		WicketTester tester = new WicketTester();
		tester.startPage(AdminLoginPage.class);
		tester.assertRenderedPage(AdminLoginPage.class);

		FormTester form = tester.newFormTester("loginForm");
		form.setValue("username", "");
		form.setValue("password", "");
		form.submit();

		tester.assertRenderedPage(AdminLoginPage.class);

		Page page = tester.getLastRenderedPage();
		TextField username = (TextField) form.getForm().get("username");
		username.setLabel(new Model<String>("username"));
		PasswordTextField password = (PasswordTextField) form.getForm().get("password");

		tester.assertErrorMessages(new String[] {
				page.getLocalizer().getString("Required", username),
				page.getLocalizer().getString("Required", password)
		});
	}