//intervals, 'happy path'
StatInterval interval0 = new StatInterval("interval1", 0, 200);
StatInterval interval1 = new StatInterval("interval2", 200, 500);
StatInterval interval2 = new StatInterval("interval3", 500, 1000);
model1.addInterval(interval0);
model1.addInterval(interval1);
model1.addInterval(interval2);
Assert.assertSame(interval0, model1.getInterval(0));
Assert.assertSame(interval1, model1.getInterval(1));
Assert.assertSame(interval2, model1.getInterval(2));