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/*
* DSI utilities
*
* Copyright (C) 2010-2023 Sebastiano Vigna
*
* This program and the accompanying materials are made available under the
* terms of the GNU Lesser General Public License v2.1 or later,
* which is available at
* http://www.gnu.org/licenses/old-licenses/lgpl-2.1-standalone.html,
* or the Apache Software License 2.0, which is available at
* https://www.apache.org/licenses/LICENSE-2.0.
*
* This program is distributed in the hope that it will be useful, but
* WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
* or FITNESS FOR A PARTICULAR PURPOSE.
*
* SPDX-License-Identifier: LGPL-2.1-or-later OR Apache-2.0
*/
package it.unimi.dsi.bits;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertTrue;
import org.junit.Test;
import it.unimi.dsi.fastutil.Size64;
import it.unimi.dsi.fastutil.booleans.BooleanBigArrayBigList;
import it.unimi.dsi.fastutil.longs.LongSortedSet;
public class AbstractBitVectorTest {
private final static class MinimalAlternatingBitVector extends AbstractBitVector {
private long length = 129;
@Override
public boolean getBoolean(final long index) { return index % 2 != 0; }
@Override
public long length() { return length; }
@Override
public MinimalAlternatingBitVector length(final long newLength) {
this.length = newLength;
return this;
}
}
@SuppressWarnings("deprecation")
@Test
public void testUnsupported() {
final BitVector v = new MinimalAlternatingBitVector();
v.getBoolean(0);
v.length();
boolean ok = false;
try {
v.removeBoolean(0);
}
catch(final UnsupportedOperationException e) {
ok = true;
}
assertTrue(ok);
ok = false;
try {
v.set(0, 0);
}
catch(final UnsupportedOperationException e) {
ok = true;
}
assertTrue(ok);
ok = false;
try {
v.add(0, 0);
}
catch(final UnsupportedOperationException e) {
ok = true;
}
assertTrue(ok);
v.length(1L<<32);
ok = false;
try {
v.size();
}
catch(final IllegalStateException e) {
ok = true;
}
assertTrue(ok);
ok = false;
try {
v.asLongBigList(1).size();
}
catch(final IllegalStateException e) {
ok = true;
}
assertTrue(ok);
}
@Test
public void testCopy() {
assertEquals(new MinimalAlternatingBitVector(), new MinimalAlternatingBitVector().copy());
assertEquals(new MinimalAlternatingBitVector().subVector(2, 20), new MinimalAlternatingBitVector().subVector(2, 20).copy());
assertEquals(new MinimalAlternatingBitVector().subVector(5, 12), new MinimalAlternatingBitVector().subVector(2, 20).subVector(3, 10));
assertEquals(new MinimalAlternatingBitVector().subVector(5, 12), new MinimalAlternatingBitVector().subVector(2, 20).subVector(3, 10).copy());
assertEquals(new MinimalAlternatingBitVector().subList(2, 20), new BooleanBigArrayBigList(new MinimalAlternatingBitVector().subList(2, 20)));
assertEquals(new MinimalAlternatingBitVector().subList(5, 12), new MinimalAlternatingBitVector().subList(2, 20).subList(3, 10));
assertEquals(new MinimalAlternatingBitVector().subList(5, 12), new BooleanBigArrayBigList(new MinimalAlternatingBitVector().subList(2, 20).subList(3, 10)));
}
@Test
public void testCount() {
final MinimalAlternatingBitVector v = new MinimalAlternatingBitVector();
assertEquals(v.length() / 2, v.count());
}
@Test
public void testRemove() {
BitVectorTestCase.testRemove(new AbstractBitVector.SubBitVector(BooleanListBitVector.getInstance().length(1000), 10, 100));
}
@Test
public void testAdd() {
BitVectorTestCase.testAdd(new AbstractBitVector.SubBitVector(BooleanListBitVector.getInstance().length(1000), 10, 100));
}
@Test
public void testCompareTo() {
final MinimalAlternatingBitVector v = new MinimalAlternatingBitVector();
LongArrayBitVector w = LongArrayBitVector.copy(v);
assertEquals(0, w.compareTo(v));
assertEquals(0, v.compareTo(w));
w.set(100);
assertEquals(1, w.compareTo(v));
assertEquals(-1, v.compareTo(w));
w = LongArrayBitVector.ofLength(10);
assertEquals(-1, w.compareTo(v));
assertEquals(1, v.compareTo(w));
w = LongArrayBitVector.of(1);
assertEquals(1, w.compareTo(v));
assertEquals(-1, v.compareTo(w));
}
@Test
public void testSize64() {
final MinimalAlternatingBitVector v = new MinimalAlternatingBitVector();
v.length(1L << 32);
assertEquals(1L << 32, v.size64());
assertEquals(1L << 31, ((Size64)v.asLongSet()).size64());
}
@Test(expected = UnsupportedOperationException.class)
public void testLongSetView() {
final LongArrayBitVector v = LongArrayBitVector.ofLength(1000);
assertTrue(v.asLongSet().add(1000));
assertEquals(1001, v.length());
v.set(1);
final LongSortedSet s = v.subVector(1, 500).asLongSet();
assertFalse(s.contains(500));
assertTrue(s.contains(0));
v.subVector(1, 500).asLongSet().add(500);
}
}
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