Method isEmptyTest

test/QueueHelper.java:23–28

(Queue<Object> q)

  }
  
  public static void isEmptyTest(Queue<Object> q) {
    verify(q.isEmpty());
    
    q.add(new Object());
    verify(! q.isEmpty());
  }
  
  public static void addTest(Queue<Object> q) {
    Object testObject = new Object();