@Test public void splitAndRandomize() {

    long seed = System.currentTimeMillis();
    
    Buffer b = new Buffer(lng, 3, seed);
    
    for (int i = 0; i < lng.length(); i++) {
        for (int j = i; j < lng.length(); j++) {
            CharSequence mangled = b.subSequence(i, j);
            CharSequence real = lng.subSequence(i, j);
            
            assertEquals(mangled.toString(), real.toString(), "At seed " + seed + " subSequence(" + i + ", " + j + ") are the same");
        }
    }
}