@Test
	public void testThatJumpheightCannotBeSetToABadValue() {
		corridor.setJumpheight(0);
		assertTrue("Jumpheight can't be 0 or smaller.", corridor.getJumpheight() < 4 && corridor.getJumpheight() > 0);
		
		corridor.setJumpheight(4);
		assertTrue("Jumpheight can't be 4 or larger.", corridor.getJumpheight() < 4 && corridor.getJumpheight() > 0);
	}