@Test
public void testFromSampledSeed() {

  Drbg drbg = AesCtrDrbgFactory.fromSampledSeed();
  byte[] bytes = new byte[100];
  drbg.nextBytes(bytes);
  // By design these bytes are unpredictable, lets just test that they
  // at least changed.
  assertFalse(Arrays.equals(bytes, new byte[100]));
}