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/*-
* See the file LICENSE for redistribution information.
*
* Copyright (c) 2002,2010 Oracle. All rights reserved.
*
* $Id: OffsetTest.java,v 1.7.2.2 2010/01/04 15:30:42 cwl Exp $
*/
package com.sleepycat.je.cleaner;
import java.util.Arrays;
import java.util.ArrayList;
import java.util.Collections;
import junit.framework.TestCase;
import com.sleepycat.je.cleaner.OffsetList;
import com.sleepycat.je.cleaner.PackedOffsets;
/**
* Tests the OffsetList and PackedOffset classes.
*/
public class OffsetTest extends TestCase {
public void testOffsets() {
doAllTest(new long[] {
1,
2,
0xfffe,
0xffff,
0xfffff,
Integer.MAX_VALUE - 1,
Integer.MAX_VALUE,
/*
* The following values don't work, which is probably a bug, but
* LSN offsets are not normally this large so the bug currently has
* little impact.
*/
//Integer.MAX_VALUE + 1L,
//Long.MAX_VALUE - 100L,
//Long.MAX_VALUE,
});
}
private void doAllTest(long[] offsets) {
ArrayList list = list(offsets);
doOneTest(offsets);
Collections.reverse(list);
doOneTest(array(list));
Collections.shuffle(list);
doOneTest(array(list));
}
private void doOneTest(long[] offsets) {
OffsetList list = new OffsetList();
for (int i = 0; i < offsets.length; i += 1) {
list.add(offsets[i], true);
}
long[] array = list.toArray();
assertTrue("array=\n" + dump(array) + " offsets=\n" + dump(offsets),
Arrays.equals(offsets, array));
long[] sorted = new long[array.length];
System.arraycopy(array, 0, sorted, 0, array.length);
Arrays.sort(sorted);
PackedOffsets packed = new PackedOffsets();
packed.pack(array);
assertTrue(Arrays.equals(sorted, packed.toArray()));
}
private ArrayList list(long[] array) {
ArrayList list = new ArrayList(array.length);
for (int i = 0; i < array.length; i += 1) {
list.add(new Long(array[i]));
}
return list;
}
private long[] array(ArrayList list) {
long[] array = new long[list.size()];
for (int i = 0; i < array.length; i += 1) {
array[i] = ((Long) list.get(i)).longValue();
}
return array;
}
private String dump(long[] array) {
StringBuffer buf = new StringBuffer(array.length * 10);
for (int i = 0; i < array.length; i += 1) {
buf.append(Long.toString(array[i]));
buf.append(' ');
}
return buf.toString();
}
}
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