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/*
* Copyright (C) 2008, Imran M Yousuf <imyousuf@smartitengineering.com>
* Copyright (C) 2008, Marek Zawirski <marek.zawirski@gmail.com> and others
*
* This program and the accompanying materials are made available under the
* terms of the Eclipse Distribution License v. 1.0 which is available at
* https://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.file;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import org.eclipse.jgit.errors.CorruptObjectException;
import org.eclipse.jgit.errors.PackMismatchException;
import org.eclipse.jgit.internal.storage.file.PackIndex.MutableEntry;
import org.eclipse.jgit.junit.JGitTestUtil;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.junit.Before;
import org.junit.Test;
public class PackReverseIndexComputedTest extends RepositoryTestCase {
private PackIndex idx;
private PackReverseIndex reverseIdx;
/**
* Set up tested class instance, test constructor by the way.
*/
@Override
@Before
public void setUp() throws Exception {
super.setUp();
// index with both small (< 2^31) and big offsets
idx = PackIndex.open(JGitTestUtil.getTestResourceFile("pack-huge.idx"));
reverseIdx = PackReverseIndexFactory.computeFromIndex(idx);
}
/**
* Test findObject() for all index entries.
*/
@Test
public void testFindObject() {
for (MutableEntry me : idx)
assertEquals(me.toObjectId(), reverseIdx.findObject(me.getOffset()));
}
/**
* Test findObject() with illegal argument.
*/
@Test
public void testFindObjectWrongOffset() {
assertNull(reverseIdx.findObject(0));
}
/**
* Test findNextOffset() for all index entries.
*
* @throws CorruptObjectException
*/
@Test
public void testFindNextOffset() throws CorruptObjectException {
long offset = findFirstOffset();
assertTrue(offset > 0);
for (int i = 0; i < idx.getObjectCount(); i++) {
long newOffset = reverseIdx.findNextOffset(offset, Long.MAX_VALUE);
assertTrue(newOffset > offset);
if (i == idx.getObjectCount() - 1)
assertEquals(newOffset, Long.MAX_VALUE);
else
assertEquals(newOffset, idx.findOffset(reverseIdx
.findObject(newOffset)));
offset = newOffset;
}
}
/**
* Test findNextOffset() with wrong illegal argument as offset.
*/
@Test
public void testFindNextOffsetWrongOffset() {
try {
reverseIdx.findNextOffset(0, Long.MAX_VALUE);
fail("findNextOffset() should throw exception");
} catch (CorruptObjectException x) {
// expected
}
}
@Test
public void testVerifyChecksum() throws PackMismatchException {
// ComputedReverseIndex doesn't have a file containing a checksum.
reverseIdx.verifyPackChecksum(null);
}
private long findFirstOffset() {
long min = Long.MAX_VALUE;
for (MutableEntry me : idx)
min = Math.min(min, me.getOffset());
return min;
}
}
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