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/*
* Copyright (c) 2020, Google LLC 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
* http://www.eclipse.org/org/documents/edl-v10.php.
*
* SPDX-License-Identifier: BSD-3-Clause
*/
package org.eclipse.jgit.internal.storage.dfs;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.io.IOException;
import java.util.Collections;
import java.util.Set;
import org.eclipse.jgit.api.GarbageCollectCommand;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.transport.FetchResult;
import org.eclipse.jgit.transport.RefSpec;
import org.eclipse.jgit.transport.TransportBundleStream;
import org.eclipse.jgit.transport.URIish;
import org.junit.Before;
import org.junit.Test;
public class DfsBundleWriterTest {
private TestRepository<InMemoryRepository> git;
private InMemoryRepository repo;
@Before
public void setUp() throws IOException {
DfsRepositoryDescription desc = new DfsRepositoryDescription("test");
git = new TestRepository<>(new InMemoryRepository(desc));
repo = git.getRepository();
}
@Test
public void makeBundle_containsUnreferencedObject() throws Exception {
RevCommit commit0 = git.commit().message("0").create();
RevCommit commit1 = git.commit().message("1").parent(commit0).create();
git.update("master", commit1);
RevCommit commit2 = git.commit().message("0").create();
byte[] bundle = makeBundle();
try (Repository newRepo = new InMemoryRepository(
new DfsRepositoryDescription("copy"))) {
fetchFromBundle(newRepo, bundle);
Ref ref = newRepo.exactRef("refs/heads/master");
assertNotNull(ref);
assertEquals(commit1.toObjectId(), ref.getObjectId());
// Unreferenced objects are included as well.
assertTrue(newRepo.getObjectDatabase().has(commit2));
}
}
@Test
public void makeBundle_containsObjectInGcRestPack() throws Exception {
RevCommit commit0 = git.commit().message("0").create();
RevCommit commit1 = git.commit().message("1").parent(commit0).create();
git.update("master", commit1);
RevCommit commit2 = git.commit().message("0").create();
// This moves unreachable commit2 to GC_REST pack.
GarbageCollectCommand gc = Git.wrap(repo).gc();
gc.call();
byte[] bundle = makeBundle();
try (Repository newRepo = new InMemoryRepository(
new DfsRepositoryDescription("copy"))) {
fetchFromBundle(newRepo, bundle);
Ref ref = newRepo.exactRef("refs/heads/master");
assertNotNull(ref);
assertEquals(commit1.toObjectId(), ref.getObjectId());
// Unreferenced objects in GC_REST pack are included as well.
assertTrue(newRepo.getObjectDatabase().has(commit2));
}
}
private byte[] makeBundle() throws IOException {
ByteArrayOutputStream out = new ByteArrayOutputStream();
DfsBundleWriter.writeEntireRepositoryAsBundle(
NullProgressMonitor.INSTANCE, out, repo);
return out.toByteArray();
}
private static FetchResult fetchFromBundle(Repository newRepo,
byte[] bundle) throws Exception {
URIish uri = new URIish("in-memory://");
ByteArrayInputStream in = new ByteArrayInputStream(bundle);
RefSpec rs = new RefSpec("refs/heads/*:refs/heads/*");
Set<RefSpec> refs = Collections.singleton(rs);
try (TransportBundleStream transport = new TransportBundleStream(
newRepo, uri, in)) {
return transport.fetch(NullProgressMonitor.INSTANCE, refs);
}
}
}
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