String conversion benchmark

benchmark.java

    @Test
    public void setString_Benchmark() {
        final int TEST_COUNT = 100000;
        String[] strings = new String[TEST_COUNT];
        for (int i = 0; i < TEST_COUNT; i++) {
            strings[i] = UUID.randomUUID().toString();
        }

        realm.beginTransaction();
        long startTime = System.nanoTime();
        for (int i = 0; i < TEST_COUNT; i++) {
            Dog dog = realm.createObject(Dog.class);
            dog.setName(strings[i]);
            realm.copyToRealm(dog);
        }
        long endTime = System.nanoTime();
        realm.commitTransaction();

        long time = (endTime - startTime)/1000/1000;
        Log.e("TTT", "Setting " + TEST_COUNT + " strings takes " + time + "ms. Avg time for one string is " +
                time/TEST_COUNT + "ms");
    }