@Test public void testIsEmptyQ() { System.out.println("isEmptyQ"); // [].isEmptyQ() -> true ADTQueue instance = ADTQueue.createQ(); boolean expResult = true; boolean result = instance.isEmptyQ(); assertEquals(expResult, result); // fail("The test case is a prototype."); // [3,2,1].isEmptyQ -> false ADTQueue instance2 = ADTQueue.createQ().enqueue(1).enqueue(2).enqueue(3); boolean expResult2 = false; boolean result2 = instance2.isEmptyQ(); assertEquals(expResult2, result2); // fail("The test case is a prototype."); }