@Test(expected = UnsupportedOperationException.class)
public void testValues() {

	assertTrue(mapState.contains(1L));
	long value = mapState.get(1L);
	assertEquals(5L, value);
	assertTrue(mapState.contains(2L));
	value = mapState.get(2L);
	assertEquals(5L, value);
	Iterator<Long> iterator = mapState.values().iterator();
	while (iterator.hasNext()) {
		iterator.remove();
	}
}