@Test
public void returnVCString() throws Exception {

    testClock.set("Proc1", 1);
    testClock.set("Proc2", 2);
    testClock.set("Proc5", 6);
    testClock.set("", 0);
    assertEquals("The function does not return the correct String!",  "{\"\":1, \"Proc1\":1, \"Proc2\":2," +
            " \"Proc5\":6}", testClock.returnVCString());
}