r = DatasetUtilities.findDomainBounds(dataset, visibleSeriesKeys, true);
assertEquals(1199142000000.0, r.getLowerBound(), EPSILON);
assertEquals(1230764399999.0, r.getUpperBound(), EPSILON);
TimeSeries s2 = new TimeSeries("S2");
dataset.addSeries(s2);
s2.add(new Year(2009), 9.0);
s2.add(new Year(2010), 10.0);
r = DatasetUtilities.findDomainBounds(dataset, visibleSeriesKeys, true);
assertEquals(1199142000000.0, r.getLowerBound(), EPSILON);
assertEquals(1230764399999.0, r.getUpperBound(), EPSILON);