@Test
public void xortest4() {
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb2 = new RoaringBitmap();
for (int i = 0; i < 200000; i += 4) rb2.add(i);
for (int i = 200000; i < 400000; i += 14) rb2.add(i);
final int rb2card = rb2.getCardinality();
// check or against an empty bitmap
final RoaringBitmap xorresult = RoaringBitmap.xor(rb, rb2);
final RoaringBitmap off = RoaringBitmap.or(rb2, rb);
Assert.assertTrue(xorresult.equals(off));
Assert.assertEquals(rb2card, xorresult.getCardinality());
for (int i = 500000; i < 600000; i += 14) rb.add(i);
for (int i = 200000; i < 400000; i += 3) rb2.add(i);
// check or against an empty bitmap
final RoaringBitmap xorresult2 = RoaringBitmap.xor(rb, rb2);
Assert.assertEquals(rb2card, xorresult.getCardinality());
Assert.assertEquals(rb2.getCardinality() + rb.getCardinality(), xorresult2.getCardinality());
rb.xor(rb2);
Assert.assertTrue(xorresult2.equals(rb));
}
@Test
public void XORtest() {
final RoaringBitmap rr = new RoaringBitmap();
for (int k = 4000; k < 4256; ++k) rr.add(k);
for (int k = 65536; k < 65536 + 4000; ++k) rr.add(k);
for (int k = 3 * 65536; k < 3 * 65536 + 9000; ++k) rr.add(k);
for (int k = 4 * 65535; k < 4 * 65535 + 7000; ++k) rr.add(k);
for (int k = 6 * 65535; k < 6 * 65535 + 10000; ++k) rr.add(k);
for (int k = 8 * 65535; k < 8 * 65535 + 1000; ++k) rr.add(k);
for (int k = 9 * 65535; k < 9 * 65535 + 30000; ++k) rr.add(k);
final RoaringBitmap rr2 = new RoaringBitmap();
for (int k = 4000; k < 4256; ++k) {
rr2.add(k);
}
for (int k = 65536; k < 65536 + 4000; ++k) {
rr2.add(k);
}
for (int k = 3 * 65536 + 2000; k < 3 * 65536 + 6000; ++k) {
rr2.add(k);
}
for (int k = 6 * 65535; k < 6 * 65535 + 1000; ++k) {
rr2.add(k);
}
for (int k = 7 * 65535; k < 7 * 65535 + 1000; ++k) {
rr2.add(k);
}
for (int k = 10 * 65535; k < 10 * 65535 + 5000; ++k) {
rr2.add(k);
}
final RoaringBitmap correct = RoaringBitmap.xor(rr, rr2);
rr.xor(rr2);
Assert.assertTrue(correct.equals(rr));
}
@Test
public void cardinalityTest() {
final int N = 1024;
for (int gap = 7; gap < 100000; gap *= 10) {
for (int offset = 2; offset <= 1024; offset *= 2) {
final RoaringBitmap rb = new RoaringBitmap();
// check the add of new values
for (int k = 0; k < N; k++) {
rb.add(k * gap);
Assert.assertEquals(rb.getCardinality(), k + 1);
}
Assert.assertEquals(rb.getCardinality(), N);
// check the add of existing values
for (int k = 0; k < N; k++) {
rb.add(k * gap);
Assert.assertEquals(rb.getCardinality(), N);
}
final RoaringBitmap rb2 = new RoaringBitmap();
for (int k = 0; k < N; k++) {
rb2.add(k * gap * offset);
Assert.assertEquals(rb2.getCardinality(), k + 1);
}
Assert.assertEquals(rb2.getCardinality(), N);
for (int k = 0; k < N; k++) {
rb2.add(k * gap * offset);
Assert.assertEquals(rb2.getCardinality(), N);
}
Assert.assertEquals(RoaringBitmap.and(rb, rb2).getCardinality(), N / offset);
Assert.assertEquals(RoaringBitmap.or(rb, rb2).getCardinality(), 2 * N - N / offset);
Assert.assertEquals(RoaringBitmap.xor(rb, rb2).getCardinality(), 2 * N - 2 * N / offset);
}
}
}
public void rTest(final int N) {
System.out.println("rtest N=" + N);
for (int gap = 1; gap <= 65536; gap *= 2) {
final BitSet bs1 = new BitSet();
final RoaringBitmap rb1 = new RoaringBitmap();
for (int x = 0; x <= N; ++x) {
bs1.set(x);
rb1.add(x);
}
if (bs1.cardinality() != rb1.getCardinality()) throw new RuntimeException("different card");
if (!equals(bs1, rb1)) throw new RuntimeException("basic bug");
for (int offset = 1; offset <= gap; offset *= 2) {
final BitSet bs2 = new BitSet();
final RoaringBitmap rb2 = new RoaringBitmap();
for (int x = 0; x <= N; ++x) {
bs2.set(x + offset);
rb2.add(x + offset);
}
if (bs2.cardinality() != rb2.getCardinality()) throw new RuntimeException("different card");
if (!equals(bs2, rb2)) throw new RuntimeException("basic bug");
BitSet clonebs1;
// testing AND
clonebs1 = (BitSet) bs1.clone();
clonebs1.and(bs2);
if (!equals(clonebs1, RoaringBitmap.and(rb1, rb2))) throw new RuntimeException("bug and");
{
final RoaringBitmap t = rb1.clone();
t.and(rb2);
if (!equals(clonebs1, t)) throw new RuntimeException("bug inplace and");
if (!t.equals(RoaringBitmap.and(rb1, rb2))) {
System.out.println(
t.highlowcontainer.getContainerAtIndex(0).getClass().getCanonicalName());
System.out.println(
RoaringBitmap.and(rb1, rb2)
.highlowcontainer
.getContainerAtIndex(0)
.getClass()
.getCanonicalName());
throw new RuntimeException("bug inplace and");
}
}
// testing OR
clonebs1 = (BitSet) bs1.clone();
clonebs1.or(bs2);
if (!equals(clonebs1, RoaringBitmap.or(rb1, rb2))) throw new RuntimeException("bug or");
{
final RoaringBitmap t = rb1.clone();
t.or(rb2);
if (!equals(clonebs1, t)) throw new RuntimeException("bug or");
if (!t.equals(RoaringBitmap.or(rb1, rb2))) throw new RuntimeException("bug or");
if (!t.toString().equals(RoaringBitmap.or(rb1, rb2).toString()))
throw new RuntimeException("bug or");
}
// testing XOR
clonebs1 = (BitSet) bs1.clone();
clonebs1.xor(bs2);
if (!equals(clonebs1, RoaringBitmap.xor(rb1, rb2))) {
throw new RuntimeException("bug xor");
}
{
final RoaringBitmap t = rb1.clone();
t.xor(rb2);
if (!equals(clonebs1, t)) throw new RuntimeException("bug xor");
if (!t.equals(RoaringBitmap.xor(rb1, rb2))) throw new RuntimeException("bug xor");
}
// testing NOTAND
clonebs1 = (BitSet) bs1.clone();
clonebs1.andNot(bs2);
if (!equals(clonebs1, RoaringBitmap.andNot(rb1, rb2))) {
throw new RuntimeException("bug andnot");
}
clonebs1 = (BitSet) bs2.clone();
clonebs1.andNot(bs1);
if (!equals(clonebs1, RoaringBitmap.andNot(rb2, rb1))) {
throw new RuntimeException("bug andnot");
}
{
final RoaringBitmap t = rb2.clone();
t.andNot(rb1);
if (!equals(clonebs1, t)) {
throw new RuntimeException("bug inplace andnot");
}
final RoaringBitmap g = RoaringBitmap.andNot(rb2, rb1);
if (!equals(clonebs1, g)) {
throw new RuntimeException("bug andnot");
}
if (!t.equals(g)) throw new RuntimeException("bug");
}
clonebs1 = (BitSet) bs1.clone();
clonebs1.andNot(bs2);
if (!equals(clonebs1, RoaringBitmap.andNot(rb1, rb2))) {
throw new RuntimeException("bug andnot");
}
{
final RoaringBitmap t = rb1.clone();
t.andNot(rb2);
if (!equals(clonebs1, t)) {
throw new RuntimeException("bug andnot");
}
final RoaringBitmap g = RoaringBitmap.andNot(rb1, rb2);
if (!equals(clonebs1, g)) {
throw new RuntimeException("bug andnot");
}
if (!t.equals(g)) throw new RuntimeException("bug");
}
}
}
}
@Test
public void xortest1() {
final HashSet<Integer> V1 = new HashSet<Integer>();
final HashSet<Integer> V2 = new HashSet<Integer>();
final RoaringBitmap rr = new RoaringBitmap();
final RoaringBitmap rr2 = new RoaringBitmap();
// For the first 65536: rr2 has a bitmap container, and rr has
// an array container.
// We will check the union between a BitmapCintainer and an
// arrayContainer
for (int k = 0; k < 4000; ++k) {
rr2.add(k);
if (k < 3500) V1.add(new Integer(k));
}
for (int k = 3500; k < 4500; ++k) {
rr.add(k);
}
for (int k = 4000; k < 65000; ++k) {
rr2.add(k);
if (k >= 4500) V1.add(new Integer(k));
}
// In the second node of each roaring bitmap, we have two bitmap
// containers.
// So, we will check the union between two BitmapContainers
for (int k = 65536; k < 65536 + 30000; ++k) {
rr.add(k);
}
for (int k = 65536; k < 65536 + 50000; ++k) {
rr2.add(k);
if (k >= 65536 + 30000) V1.add(new Integer(k));
}
// In the 3rd node of each Roaring Bitmap, we have an
// ArrayContainer. So, we will try the union between two
// ArrayContainers.
for (int k = 4 * 65535; k < 4 * 65535 + 1000; ++k) {
rr.add(k);
if (k >= 4 * 65535 + 800) V1.add(new Integer(k));
}
for (int k = 4 * 65535; k < 4 * 65535 + 800; ++k) {
rr2.add(k);
}
// For the rest, we will check if the union will take them in
// the result
for (int k = 6 * 65535; k < 6 * 65535 + 1000; ++k) {
rr.add(k);
V1.add(new Integer(k));
}
for (int k = 7 * 65535; k < 7 * 65535 + 2000; ++k) {
rr2.add(k);
V1.add(new Integer(k));
}
final RoaringBitmap rrxor = RoaringBitmap.xor(rr, rr2);
boolean valide = true;
// Si tous les elements de rror sont dans V1 et que tous les
// elements de
// V1 sont dans rror(V2)
// alors V1 == rror
final Object[] tab = V1.toArray();
final Vector<Integer> vector = new Vector<Integer>();
for (int i = 0; i < tab.length; i++) vector.add((Integer) tab[i]);
for (final int i : rrxor.toArray()) {
if (!vector.contains(new Integer(i))) {
valide = false;
}
V2.add(new Integer(i));
}
for (int i = 0; i < V1.size(); i++)
if (!V2.contains(vector.elementAt(i))) {
valide = false;
}
Assert.assertEquals(valide, true);
}