@Test
public void getClockMap() throws Exception {

    TreeMap clockMap = testClock.getClockMap();
    assertTrue("The clock map is not empty!",clockMap.entrySet().isEmpty());
    clockMap.put("Proc1", 1);
    TreeMap clockMap2 = testClock.getClockMap();
    assertEquals("The clock map does not contain the expected value!", 1, clockMap2.get("Proc1"));
    assertEquals("The clock map does not contain the expected key!", "Proc1", clockMap2.firstKey());
}