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Created February 22, 2011 23:55
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Tries to use JGit to perform git tag --contains
/*
* Copyright (C) 2011, Chris Aniszczyk <caniszczyk@gmail.com>
* and other copyright owners as documented in the project's IP log.
*
* This program and the accompanying materials are made available
* under the terms of the Eclipse Distribution License v1.0 which
* accompanies this distribution, is reproduced below, and is
* available at http://www.eclipse.org/org/documents/edl-v10.php
*
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or
* without modification, are permitted provided that the following
* conditions are met:
*
* - Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* - 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.
*
* - Neither the name of the Eclipse Foundation, Inc. nor the
* names of its contributors may be used to endorse or promote
* products derived from this software without specific prior
* written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
* CONTRIBUTORS "AS IS" AND ANY EXPRESS 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 COPYRIGHT OWNER OR
* 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.
*/
package org.eclipse.jgit.api;
import static org.junit.Assert.assertEquals;
import java.util.Arrays;
import java.util.HashSet;
import java.util.Set;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.lib.RepositoryTestCase;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevObject;
import org.eclipse.jgit.revwalk.RevTag;
import org.eclipse.jgit.revwalk.RevWalk;
import org.junit.Test;
public class TagContainsTest extends RepositoryTestCase {
@Test
public void testTagging() throws Exception {
Git git = new Git(db);
RevCommit commit1 = git.commit().setMessage("initial commit").call();
git.tag().setObjectId(commit1).setName("tag1").call();
git.tag().setObjectId(commit1).setName("tag2").call();
RevCommit commit2 = git.commit().setMessage("second commit").call();
git.tag().setObjectId(commit2).setName("tag3").call();
Ref tagRef1 = db.getRef("tag1");
Ref tagRef2 = db.getRef("tag2");
Ref tagRef3 = db.getRef("tag3");
git.commit().setMessage("third commit").call();
final Set<Ref> expectedTags1 = new HashSet<Ref>(Arrays.asList(tagRef1,
tagRef2, tagRef3));
assertEquals(expectedTags1, getTagsForCommit(db, commit1));
final Set<Ref> expectedTags2 = new HashSet<Ref>(Arrays.asList(tagRef3));
assertEquals(expectedTags2, getTagsForCommit(db, commit2));
}
// mimic git tag --contains <commit>
private static Set<Ref> getTagsForCommit(Repository repo,
RevCommit commit) throws Exception {
final Set<Ref> tags = new HashSet<Ref>();
final RevWalk walk = new RevWalk(repo);
walk.reset();
for (final Ref ref : repo.getTags().values()) {
final RevObject obj = walk.parseAny(ref.getObjectId());
final RevCommit tagCommit;
if (obj instanceof RevCommit) {
tagCommit = (RevCommit) obj;
} else if (obj instanceof RevTag) {
tagCommit = walk.parseCommit(((RevTag) obj).getObject());
} else {
continue;
}
if (commit.equals(tagCommit)
|| walk.isMergedInto(commit, tagCommit)) {
tags.add(ref);
}
}
return tags;
}
}
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