code: @Override
  	protected List<FieldCase> createCases() {
  		List<FieldCase> s = Lists.newArrayList();
  		s.add(new FieldCase(range.getMin()));
  		// make sure there are three different sizes in the list
  		int rndValue = range.getMin() + 1 + random.getInt(range.getRange() - 2);
  		s.add(new FieldCase(rndValue));
  		s.add(new FieldCase(range.getMax()));
  		return s;
  	}
docs: Generates a list with three {@link FieldCase}-objects which are with a uniform distribution
  within the valid interval [min, avg, max]