	@Test
	public void testPerformAction() throws ActException {

		Percept percept = handler.performAction(new Action("getX"));
		assertEquals(new Percept("getX", new Numeral(0)), percept);

		percept = handler.performAction(new Action("setX", new Numeral(1)));
		assertEquals(null, percept);

		percept = handler.performAction(new Action("getX"));
		assertEquals(new Percept("getX", new Numeral(1)), percept);
	}