Remove random test for fixed test is good enough

        }

    }

//    @Test

//    public void testCountOccurrencesRandom() {

//        try {

//            Method method = SearchableBaseNoteFragment.class.getDeclaredMethod("countOccurrences", String.class, String.class);

//            method.setAccessible(true);

//

//            for (int count = 10; count <= 15; ++count) {

//                StringBuilder sb = new StringBuilder("Mike Chester Wang");

//                Random rand = new Random();

//                for (int i = 0; i < count * 100; ++i) {

//                    sb.append(rand.nextDouble());

//                    if (i % 100 == 0) {

//                        sb.append("flag");

//                    }

//                }

//

//                long startTime = System.currentTimeMillis();

//                int num = (int) method.invoke(null, sb.toString(), String.valueOf(rand.nextInt(100)));

//                long endTime = System.currentTimeMillis();

//                System.out.println("Random Version");

//                System.out.println("Total Time: " + (endTime - startTime) + " ms");

//                System.out.println("Total Times: " + num);

//                System.out.println("String Size: " + (sb.length() / 1024) + " K");

//                System.out.println();

//

//                if (endTime - startTime > 10) {

//                    fail("The algorithm spends too much time.");

//                }

//            }

//

//        } catch (Exception e) {

//            fail(Arrays.toString(e.getStackTrace()));

//            Log.e("Test Count Occurrences Random", Arrays.toString(e.getStackTrace()));

//        }

//    }

    @Test

    public void testNullOrEmptyInput() {

        try {