http://issues.apache.org/bugzilla/show_bug.cgi?id=8525
I tried to reproduce it, and was unable to. I ended up with a full JUnit test of BitVector. :)
Not sure where such things go, but I've attached it, maybe someone could put it into the repository?
I'll continue trolling through the bugs, maybe someone with Bugzilla access could ask the author for more info, or we can close it as not reproducible?
Thanks
Peter
package org.apache.lucene.util; /* ==================================================================== * The Apache Software License, Version 1.1 * * Copyright (c) 2001 The Apache Software Foundation. All rights * reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in * the documentation and/or other materials provided with the * distribution. * * 3. The end-user documentation included with the redistribution, * if any, must include the following acknowledgment: * "This product includes software developed by the * Apache Software Foundation (http://www.apache.org/)." * Alternately, this acknowledgment may appear in the software itself, * if and wherever such third-party acknowledgments normally appear. * * 4. The names "Apache" and "Apache Software Foundation" and * "Apache Lucene" must not be used to endorse or promote products * derived from this software without prior written permission. For * written permission, please contact [EMAIL PROTECTED] * * 5. Products derived from this software may not be called "Apache", * "Apache Lucene", nor may "Apache" appear in their name, without * prior written permission of the Apache Software Foundation. * * THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED * WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE * DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR * ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF * USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, * OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT * OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF * SUCH DAMAGE. * ==================================================================== * * This software consists of voluntary contributions made by many * individuals on behalf of the Apache Software Foundation. For more * information on the Apache Software Foundation, please see * <http://www.apache.org/>. */
import junit.framework.TestCase;
import org.apache.lucene.store.Directory;
import org.apache.lucene.store.RAMDirectory;
public class TestBitVector extends TestCase {
public TestBitVector(String s) {
super(s);
}
/**
* Test the default constructor on BitVectors of various sizes.
* @throws Exception
*/
public void testConstructSize() throws Exception {
doTestConstructOfSize(8);
doTestConstructOfSize(20);
doTestConstructOfSize(100);
doTestConstructOfSize(1000);
}
private void doTestConstructOfSize(int n) {
BitVector bv = new BitVector(n);
assertEquals(n,bv.size());
}
/**
* Test the get() and set() methods on BitVectors of various sizes.
* @throws Exception
*/
public void testGetSet() throws Exception {
doTestGetSetVectorOfSize(8);
doTestGetSetVectorOfSize(20);
doTestGetSetVectorOfSize(100);
doTestGetSetVectorOfSize(1000);
}
private void doTestGetSetVectorOfSize(int n) {
BitVector bv = new BitVector(n);
for(int i=0;i<bv.size();i++) {
// ensure a set bit can be git'
assertFalse(bv.get(i));
bv.set(i);
assertTrue(bv.get(i));
}
}
/**
* Test the clear() method on BitVectors of various sizes.
* @throws Exception
*/
public void testClear() throws Exception {
doTestClearVectorOfSize(8);
doTestClearVectorOfSize(20);
doTestClearVectorOfSize(100);
doTestClearVectorOfSize(1000);
}
private void doTestClearVectorOfSize(int n) {
BitVector bv = new BitVector(n);
for(int i=0;i<bv.size();i++) {
// ensure a set bit is cleared
assertFalse(bv.get(i));
bv.set(i);
assertTrue(bv.get(i));
bv.clear(i);
assertFalse(bv.get(i));
}
}
/**
* Test the count() method on BitVectors of various sizes.
* @throws Exception
*/
public void testCount() throws Exception {
doTestCountVectorOfSize(8);
doTestCountVectorOfSize(20);
doTestCountVectorOfSize(100);
doTestCountVectorOfSize(1000);
}
private void doTestCountVectorOfSize(int n) {
BitVector bv = new BitVector(n);
// test count when incrementally setting bits
for(int i=0;i<bv.size();i++) {
assertFalse(bv.get(i));
assertEquals(i,bv.count());
bv.set(i);
assertTrue(bv.get(i));
assertEquals(i+1,bv.count());
}
bv = new BitVector(n);
// test count when setting then clearing bits
for(int i=0;i<bv.size();i++) {
assertFalse(bv.get(i));
assertEquals(0,bv.count());
bv.set(i);
assertTrue(bv.get(i));
assertEquals(1,bv.count());
bv.clear(i);
assertFalse(bv.get(i));
assertEquals(0,bv.count());
}
}
/**
* Test writing and construction to/from Directory.
* @throws Exception
*/
public void testWriteRead() throws Exception {
doTestWriteRead(8);
doTestWriteRead(20);
doTestWriteRead(100);
doTestWriteRead(1000);
}
private void doTestWriteRead(int n) throws Exception {
Directory d = new RAMDirectory();
BitVector bv = new BitVector(n);
// test count when incrementally setting bits
for(int i=0;i<bv.size();i++) {
assertFalse(bv.get(i));
assertEquals(i,bv.count());
bv.set(i);
assertTrue(bv.get(i));
assertEquals(i+1,bv.count());
bv.write(d, "TESTBV");
BitVector compare = new BitVector(d, "TESTBV");
// compare bit vectors with bits set incrementally
assertTrue(doCompare(bv,compare));
}
}
/**
* Compare two BitVectors (really, this should be an equals method on the
BitVector itself...
* @param bv One bit vector
* @param compare The second to compare
*/
private boolean doCompare(BitVector bv, BitVector compare) {
boolean equal = true;
for(int i=0;i<bv.size();i++) {
// bits must be equal
if(bv.get(i)!=compare.get(i)) {
equal = false;
break;
}
}
return equal;
}
}
-- To unsubscribe, e-mail: <mailto:lucene-dev-unsubscribe@;jakarta.apache.org> For additional commands, e-mail: <mailto:lucene-dev-help@;jakarta.apache.org>
