@Test
public void removeSpeedyArrayTest() {
final RoaringBitmap rb = new RoaringBitmap();
for (int i = 0; i < 10000; i++) rb.add(i);
for (int i = 10000; i > 0; i++) {
rb.highlowcontainer.remove(Util.highbits(i));
Assert.assertEquals(rb.contains(i), false);
}
}
@Test
public void flipTest2() {
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 100000);
final int rbcard = rb.getCardinality();
Assert.assertEquals(0, rbcard);
final BitSet bs = new BitSet();
Assert.assertTrue(equals(bs, rb));
}
@Test
public void flipTest1() {
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 200000); // in-place on empty bitmap
final int rbcard = rb.getCardinality();
Assert.assertEquals(100000, rbcard);
final BitSet bs = new BitSet();
for (int i = 100000; i < 200000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void ortest2() {
final int[] arrayrr = new int[4000 + 4000 + 2];
int pos = 0;
final RoaringBitmap rr = new RoaringBitmap();
for (int k = 0; k < 4000; ++k) {
rr.add(k);
arrayrr[pos++] = k;
}
rr.add(100000);
rr.add(110000);
final RoaringBitmap rr2 = new RoaringBitmap();
for (int k = 4000; k < 8000; ++k) {
rr2.add(k);
arrayrr[pos++] = k;
}
arrayrr[pos++] = 100000;
arrayrr[pos++] = 110000;
final RoaringBitmap rror = RoaringBitmap.or(rr, rr2);
final int[] arrayor = rror.toArray();
Assert.assertTrue(Arrays.equals(arrayor, arrayrr));
}
@Test
public void flipTest1A() {
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb1 = RoaringBitmap.flip(rb, 100000, 200000);
final int rbcard = rb1.getCardinality();
Assert.assertEquals(100000, rbcard);
Assert.assertEquals(0, rb.getCardinality());
final BitSet bs = new BitSet();
Assert.assertTrue(equals(bs, rb)); // still empty?
for (int i = 100000; i < 200000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb1));
}
@Test
public void flipTest6A() {
System.out.println("FlipTest6A");
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb1 = RoaringBitmap.flip(rb, 100000, 132000);
final RoaringBitmap rb2 = RoaringBitmap.flip(rb1, 99000, 2 * 65536);
final int rbcard = rb2.getCardinality();
Assert.assertEquals(1928, rbcard);
final BitSet bs = new BitSet();
for (int i = 99000; i < 100000; ++i) bs.set(i);
for (int i = 2 * 65536; i < 132000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb2));
}
@Test
public void flipTest3() {
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 200000); // got 100k-199999
rb.flip(100000, 199991); // give back 100k-199990
final int rbcard = rb.getCardinality();
Assert.assertEquals(9, rbcard);
final BitSet bs = new BitSet();
for (int i = 199991; i < 200000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void flipTest3A() {
System.out.println("FlipTest3A");
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb1 = RoaringBitmap.flip(rb, 100000, 200000);
final RoaringBitmap rb2 = RoaringBitmap.flip(rb1, 100000, 199991);
final int rbcard = rb2.getCardinality();
Assert.assertEquals(9, rbcard);
final BitSet bs = new BitSet();
for (int i = 199991; i < 200000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb2));
}
@Test
public void flipTest7A() { // within 1 word, first container
System.out.println("FlipTest7A");
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb1 = RoaringBitmap.flip(rb, 650, 132000);
final RoaringBitmap rb2 = RoaringBitmap.flip(rb1, 648, 651);
final int rbcard = rb2.getCardinality();
// 648, 649, 651-131999
Assert.assertEquals(132000 - 651 + 2, rbcard);
final BitSet bs = new BitSet();
bs.set(648);
bs.set(649);
for (int i = 651; i < 132000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb2));
}
@Test
public void flipTest6() { // fits evenly on big end, multiple containers
System.out.println("FlipTest6");
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 132000);
rb.flip(99000, 2 * 65536);
final int rbcard = rb.getCardinality();
// 99000 to 99999 are 1000 1s
// 131072 to 131999 are 928 1s
Assert.assertEquals(1928, rbcard);
final BitSet bs = new BitSet();
for (int i = 99000; i < 100000; ++i) bs.set(i);
for (int i = 2 * 65536; i < 132000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void flipTest4() { // fits evenly on both ends
System.out.println("FlipTest4");
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 200000); // got 100k-199999
rb.flip(65536, 4 * 65536);
final int rbcard = rb.getCardinality();
// 65536 to 99999 are 1s
// 200000 to 262143 are 1s: total card
Assert.assertEquals(96608, rbcard);
final BitSet bs = new BitSet();
for (int i = 65536; i < 100000; ++i) bs.set(i);
for (int i = 200000; i < 262144; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void flipTest5() { // fits evenly on small end, multiple
// containers
System.out.println("FlipTest5");
final RoaringBitmap rb = new RoaringBitmap();
rb.flip(100000, 132000);
rb.flip(65536, 120000);
final int rbcard = rb.getCardinality();
// 65536 to 99999 are 1s
// 120000 to 131999
Assert.assertEquals(46464, rbcard);
final BitSet bs = new BitSet();
for (int i = 65536; i < 100000; ++i) bs.set(i);
for (int i = 120000; i < 132000; ++i) bs.set(i);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void andtest() {
final RoaringBitmap rr = new RoaringBitmap();
for (int k = 0; k < 4000; ++k) {
rr.add(k);
}
rr.add(100000);
rr.add(110000);
final RoaringBitmap rr2 = new RoaringBitmap();
rr2.add(13);
final RoaringBitmap rrand = RoaringBitmap.and(rr, rr2);
int[] array = rrand.toArray();
Assert.assertEquals(array.length, 1);
Assert.assertEquals(array[0], 13);
rr.and(rr2);
array = rr.toArray();
Assert.assertEquals(array.length, 1);
Assert.assertEquals(array[0], 13);
}
@Test
public void basictest() {
final RoaringBitmap rr = new RoaringBitmap();
final int[] a = new int[4002];
int pos = 0;
for (int k = 0; k < 4000; ++k) {
rr.add(k);
a[pos++] = k;
}
rr.add(100000);
a[pos++] = 100000;
rr.add(110000);
a[pos++] = 110000;
final int[] array = rr.toArray();
pos = 0;
for (int i = 0; i < array.length; i++)
if (array[i] != a[i]) System.out.println("rr : " + array[i] + " a : " + a[i]);
Assert.assertTrue(Arrays.equals(array, a));
}
@Test
public void testSerialization2() throws IOException, ClassNotFoundException {
final RoaringBitmap rr = new RoaringBitmap();
for (int k = 200; k < 400; ++k) rr.add(k);
final ByteArrayOutputStream bos = new ByteArrayOutputStream();
// Note: you could use a file output steam instead of
// ByteArrayOutputStream
final ObjectOutputStream oo = new ObjectOutputStream(bos);
rr.writeExternal(oo);
oo.close();
final RoaringBitmap rrback = new RoaringBitmap();
final ByteArrayInputStream bis = new ByteArrayInputStream(bos.toByteArray());
rrback.readExternal(new ObjectInputStream(bis));
Assert.assertEquals(rr.getCardinality(), rrback.getCardinality());
Assert.assertTrue(rr.equals(rrback));
}
@Test
public void andnottest4() {
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);
rb2.getCardinality();
// check or against an empty bitmap
final RoaringBitmap andNotresult = RoaringBitmap.andNot(rb, rb2);
final RoaringBitmap off = RoaringBitmap.andNot(rb2, rb);
Assert.assertEquals(rb, andNotresult);
Assert.assertEquals(rb2, off);
rb2.andNot(rb);
Assert.assertEquals(rb2, off);
}
@Test
public void flipTest2A() {
final RoaringBitmap rb = new RoaringBitmap();
final RoaringBitmap rb1 = RoaringBitmap.flip(rb, 100000, 100000);
rb.add(1); // will not affect rb1 (no shared container)
final int rbcard = rb1.getCardinality();
Assert.assertEquals(0, rbcard);
Assert.assertEquals(1, rb.getCardinality());
final BitSet bs = new BitSet();
Assert.assertTrue(equals(bs, rb1));
bs.set(1);
Assert.assertTrue(equals(bs, rb));
}
@Test
public void simplecardinalityTest() {
final int N = 512;
final int gap = 70;
final RoaringBitmap rb = new RoaringBitmap();
for (int k = 0; k < N; k++) {
rb.add(k * gap);
Assert.assertEquals(rb.getCardinality(), k + 1);
}
Assert.assertEquals(rb.getCardinality(), N);
for (int k = 0; k < N; k++) {
rb.add(k * gap);
Assert.assertEquals(rb.getCardinality(), N);
}
}
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 ortest4() {
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 orresult = RoaringBitmap.or(rb, rb2);
final RoaringBitmap off = RoaringBitmap.or(rb2, rb);
Assert.assertTrue(orresult.equals(off));
Assert.assertEquals(rb2card, orresult.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 orresult2 = RoaringBitmap.or(rb, rb2);
Assert.assertEquals(rb2card, orresult.getCardinality());
Assert.assertEquals(rb2.getCardinality() + rb.getCardinality(), orresult2.getCardinality());
rb.or(rb2);
Assert.assertTrue(rb.equals(orresult2));
}
public static boolean equals(BitSet bs, RoaringBitmap rr) {
final int[] a = new int[bs.cardinality()];
int pos = 0;
for (int x = bs.nextSetBit(0); x >= 0; x = bs.nextSetBit(x + 1)) a[pos++] = x;
return Arrays.equals(rr.toArray(), a);
}
@Test
public void andtest3() {
final int[] arrayand = new int[11256];
int pos = 0;
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 + 1000; ++k) rr.add(k);
for (int k = 3 * 65536 + 1000; k < 3 * 65536 + 7000; ++k) rr.add(k);
for (int k = 3 * 65536 + 7000; k < 3 * 65536 + 9000; ++k) rr.add(k);
for (int k = 4 * 65536; k < 4 * 65536 + 7000; ++k) rr.add(k);
for (int k = 6 * 65536; k < 6 * 65536 + 10000; ++k) rr.add(k);
for (int k = 8 * 65536; k < 8 * 65536 + 1000; ++k) rr.add(k);
for (int k = 9 * 65536; k < 9 * 65536 + 30000; ++k) rr.add(k);
final RoaringBitmap rr2 = new RoaringBitmap();
for (int k = 4000; k < 4256; ++k) {
rr2.add(k);
arrayand[pos++] = k;
}
for (int k = 65536; k < 65536 + 4000; ++k) {
rr2.add(k);
arrayand[pos++] = k;
}
for (int k = 3 * 65536 + 1000; k < 3 * 65536 + 7000; ++k) {
rr2.add(k);
arrayand[pos++] = k;
}
for (int k = 6 * 65536; k < 6 * 65536 + 1000; ++k) {
rr2.add(k);
arrayand[pos++] = k;
}
for (int k = 7 * 65536; k < 7 * 65536 + 1000; ++k) {
rr2.add(k);
}
for (int k = 10 * 65536; k < 10 * 65536 + 5000; ++k) {
rr2.add(k);
}
final RoaringBitmap rrand = RoaringBitmap.and(rr, rr2);
final int[] arrayres = rrand.toArray();
for (int i = 0; i < arrayres.length; i++)
if (arrayres[i] != arrayand[i]) System.out.println(arrayres[i]);
Assert.assertTrue(Arrays.equals(arrayand, arrayres));
}
@Test
public void ortest3() {
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);
V1.add(new Integer(k));
}
for (int k = 3500; k < 4500; ++k) {
rr.add(k);
V1.add(new Integer(k));
}
for (int k = 4000; k < 65000; ++k) {
rr2.add(k);
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 + 10000; ++k) {
rr.add(k);
V1.add(new Integer(k));
}
for (int k = 65536; k < 65536 + 14000; ++k) {
rr2.add(k);
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);
V1.add(new Integer(k));
}
for (int k = 4 * 65535; k < 4 * 65535 + 800; ++k) {
rr2.add(k);
V1.add(new Integer(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 rror = RoaringBitmap.or(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 : rror.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);
}
@Test
public void ORtest() {
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.or(rr, rr2);
rr.or(rr2);
Assert.assertTrue(correct.equals(rr));
}
@Test
public void andtest4() {
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);
// check or against an empty bitmap
final RoaringBitmap andresult = RoaringBitmap.and(rb, rb2);
final RoaringBitmap off = RoaringBitmap.and(rb2, rb);
Assert.assertTrue(andresult.equals(off));
Assert.assertEquals(0, andresult.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 andresult2 = RoaringBitmap.and(rb, rb2);
Assert.assertEquals(0, andresult.getCardinality());
Assert.assertEquals(0, andresult2.getCardinality());
for (int i = 0; i < 200000; i += 4) rb.add(i);
for (int i = 200000; i < 400000; i += 14) rb.add(i);
Assert.assertEquals(0, andresult.getCardinality());
final RoaringBitmap rc = RoaringBitmap.and(rb, rb2);
rb.and(rb2);
Assert.assertEquals(rc.getCardinality(), rb.getCardinality());
}
@Test
public void ortest() {
final RoaringBitmap rr = new RoaringBitmap();
for (int k = 0; k < 4000; ++k) {
rr.add(k);
}
rr.add(100000);
rr.add(110000);
final RoaringBitmap rr2 = new RoaringBitmap();
for (int k = 0; k < 4000; ++k) {
rr2.add(k);
}
final RoaringBitmap rror = RoaringBitmap.or(rr, rr2);
final int[] array = rror.toArray();
final int[] arrayrr = rr.toArray();
Assert.assertTrue(Arrays.equals(array, arrayrr));
rr.or(rr2);
final int[] arrayirr = rr.toArray();
Assert.assertTrue(Arrays.equals(array, arrayirr));
}
@SuppressWarnings("null")
@Test
public void flipTestBigA() {
final int numCases = 1000000;
System.out.println("flipTestBigA for " + numCases + " tests");
final BitSet bs = new BitSet();
final Random r = new Random(3333);
int checkTime = 2;
RoaringBitmap rb1 = new RoaringBitmap(), rb2 = null; // alternate
// between
// them
for (int i = 0; i < numCases; ++i) {
final int start = r.nextInt(65536 * 20);
int end = r.nextInt(65536 * 20);
if (r.nextDouble() < 0.1) end = start + r.nextInt(100);
if ((i & 1) == 0) {
rb2 = RoaringBitmap.flip(rb1, start, end);
// tweak the other, catch bad sharing
rb1.flip(r.nextInt(65536 * 20), r.nextInt(65536 * 20));
} else {
rb1 = RoaringBitmap.flip(rb2, start, end);
rb2.flip(r.nextInt(65536 * 20), r.nextInt(65536 * 20));
}
if (start < end) bs.flip(start, end); // throws exception
// otherwise
// insert some more ANDs to keep things sparser
if (r.nextDouble() < 0.2 && (i & 1) == 0) {
final RoaringBitmap mask = new RoaringBitmap();
final BitSet mask1 = new BitSet();
final int startM = r.nextInt(65536 * 20);
final int endM = startM + 100000;
mask.flip(startM, endM);
mask1.flip(startM, endM);
mask.flip(0, 65536 * 20 + 100000);
mask1.flip(0, 65536 * 20 + 100000);
rb2.and(mask);
bs.and(mask1);
}
if (i > checkTime) {
System.out.println("check after " + i + ", card = " + rb2.getCardinality());
final RoaringBitmap rb = (i & 1) == 0 ? rb2 : rb1;
final boolean status = equals(bs, rb);
Assert.assertTrue(status);
checkTime *= 1.5;
}
}
}
@Test
public void flipTestBig() {
final int numCases = 1000000;
System.out.println("flipTestBig for " + numCases + " tests");
final RoaringBitmap rb = new RoaringBitmap();
final BitSet bs = new BitSet();
final Random r = new Random(3333);
int checkTime = 2;
for (int i = 0; i < numCases; ++i) {
final int start = r.nextInt(65536 * 20);
int end = r.nextInt(65536 * 20);
if (r.nextDouble() < 0.1) end = start + r.nextInt(100);
rb.flip(start, end);
if (start < end) bs.flip(start, end); // throws exception
// otherwise
// insert some more ANDs to keep things sparser
if (r.nextDouble() < 0.2) {
final RoaringBitmap mask = new RoaringBitmap();
final BitSet mask1 = new BitSet();
final int startM = r.nextInt(65536 * 20);
final int endM = startM + 100000;
mask.flip(startM, endM);
mask1.flip(startM, endM);
mask.flip(0, 65536 * 20 + 100000);
mask1.flip(0, 65536 * 20 + 100000);
rb.and(mask);
bs.and(mask1);
}
// see if we can detect incorrectly shared containers
if (r.nextDouble() < 0.1) {
final RoaringBitmap irrelevant = RoaringBitmap.flip(rb, 10, 100000);
irrelevant.flip(5, 200000);
irrelevant.flip(190000, 260000);
}
if (i > checkTime) {
System.out.println("check after " + i + ", card = " + rb.getCardinality());
Assert.assertTrue(equals(bs, rb));
checkTime *= 1.5;
}
}
}
@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);
}
}
}
@Test
public void clearTest() {
final RoaringBitmap rb = new RoaringBitmap();
for (int i = 0; i < 200000; i += 7)
// dense
rb.add(i);
for (int i = 200000; i < 400000; i += 177)
// sparse
rb.add(i);
final RoaringBitmap rb2 = new RoaringBitmap();
final RoaringBitmap rb3 = new RoaringBitmap();
for (int i = 0; i < 200000; i += 4) rb2.add(i);
for (int i = 200000; i < 400000; i += 14) rb2.add(i);
rb.clear();
Assert.assertEquals(0, rb.getCardinality());
Assert.assertTrue(0 != rb2.getCardinality());
rb.add(4);
rb3.add(4);
final RoaringBitmap andresult = RoaringBitmap.and(rb, rb2);
final RoaringBitmap orresult = RoaringBitmap.or(rb, rb2);
Assert.assertEquals(1, andresult.getCardinality());
Assert.assertEquals(rb2.getCardinality(), orresult.getCardinality());
for (int i = 0; i < 200000; i += 4) {
rb.add(i);
rb3.add(i);
}
for (int i = 200000; i < 400000; i += 114) {
rb.add(i);
rb3.add(i);
}
final int[] arrayrr = rb.toArray();
final int[] arrayrr3 = rb3.toArray();
Assert.assertTrue(Arrays.equals(arrayrr, arrayrr3));
}