@Test public void testRange() { BitSet bs = new BitSet(); for (int i = 0; i < 20; i++) { bs.set(i * 2); } assertRange(bs, null, null); assertRange(bs, null, 10); assertRange(bs, 0, null); assertRange(bs, bs.cardinality() / 2, null); assertRange(bs, 0, 10); assertRange(bs, 5, 10); assertRange(bs, 15, 100); assertRange(bs, 30, 100); }