@Test
public void testCdf() {

  Random gen = RandomUtils.getRandom();
  double offset = 0;
  double scale = 1;
  for (int k = 0; k < 20; k++) {
    Normal dist = new Normal(offset, scale, null);
    DistributionChecks.checkCdf(offset, scale, dist, breaks, quantiles);
    offset = gen.nextGaussian();
    scale = Math.exp(3 * gen.nextGaussian());
  }
}