protected void doSingle(int maxSize) {
int sz = rand.nextInt(maxSize + 1);
int sz2 = rand.nextInt(maxSize);
OpenBitSet bs1 = getRandomSet(sz, rand.nextInt(sz + 1));
OpenBitSet bs2 = getRandomSet(sz, rand.nextInt(sz2 + 1));
DocSet a1 = new BitDocSet(bs1);
DocSet a2 = new BitDocSet(bs2);
DocSet b1 = getDocSet(bs1);
DocSet b2 = getDocSet(bs2);
checkEqual(bs1, b1);
checkEqual(bs2, b2);
iter(a1, b1);
iter(a2, b2);
OpenBitSet a_and = (OpenBitSet) bs1.clone();
a_and.and(bs2);
OpenBitSet a_or = (OpenBitSet) bs1.clone();
a_or.or(bs2);
// OpenBitSet a_xor = (OpenBitSet)bs1.clone(); a_xor.xor(bs2);
OpenBitSet a_andn = (OpenBitSet) bs1.clone();
a_andn.andNot(bs2);
checkEqual(a_and, b1.intersection(b2));
checkEqual(a_or, b1.union(b2));
checkEqual(a_andn, b1.andNot(b2));
assertEquals(a_and.cardinality(), b1.intersectionSize(b2));
assertEquals(a_or.cardinality(), b1.unionSize(b2));
assertEquals(a_andn.cardinality(), b1.andNotSize(b2));
}
