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/*
* DSI utilities
*
* Copyright (C) 2010-2022 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 java.io.DataInputStream;
import java.io.DataOutputStream;
import java.io.IOException;
import java.util.Arrays;
import java.util.Iterator;
import org.junit.Test;
import it.unimi.dsi.fastutil.io.FastByteArrayInputStream;
import it.unimi.dsi.fastutil.io.FastByteArrayOutputStream;
import it.unimi.dsi.io.OfflineIterable;
public class BitVectorsTest {
@Test
public void testReadWriteFast() throws IOException {
final FastByteArrayOutputStream fbaos = new FastByteArrayOutputStream();
final DataOutputStream dos = new DataOutputStream(fbaos);
final LongArrayBitVector labv = LongArrayBitVector.getInstance();
final BitVector[] a = new BitVector[] { BitVectors.ZERO, BitVectors.ONE, BitVectors.EMPTY_VECTOR,
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL }, 64),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAL }, 60),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL, 0xAAAAAAAAAAAAAAAAL }, 128),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL, 0xAAAAAAAAAAAAAAAL }, 124) };
for(final BitVector bv: a) {
BitVectors.writeFast(bv, dos);
dos.close();
assertEquals(bv, BitVectors.readFast(new DataInputStream(new FastByteArrayInputStream(fbaos.array))));
fbaos.reset();
}
for(final BitVector bv: a) {
BitVectors.writeFast(bv, dos);
dos.close();
assertEquals(bv, BitVectors.readFast(new DataInputStream(new FastByteArrayInputStream(fbaos.array)), labv));
fbaos.reset();
}
}
@Test
public void testMakeOffline() throws IOException {
final BitVector[] a = new BitVector[] { BitVectors.ZERO, BitVectors.ONE, BitVectors.EMPTY_VECTOR,
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL }, 64),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAL }, 60),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL, 0xAAAAAAAAAAAAAAAAL }, 128),
LongArrayBitVector.wrap(new long[] { 0xAAAAAAAAAAAAAAAAL, 0xAAAAAAAAAAAAAAAL }, 124) };
final OfflineIterable<BitVector,LongArrayBitVector> iterable = new OfflineIterable<>(BitVectors.OFFLINE_SERIALIZER, LongArrayBitVector.getInstance());
iterable.addAll(Arrays.asList(a));
final Iterator<LongArrayBitVector> iterator = iterable.iterator();
for (final BitVector element : a) assertEquals(element, iterator.next());
assertFalse(iterator.hasNext());
iterable.close();
}
}
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