/*
* Copyright (C) 2010, 2013 Google Inc.
* 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,
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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package org.eclipse.jgit.internal.storage.file;
import static org.eclipse.jgit.lib.Constants.HEAD;
import static org.eclipse.jgit.lib.Constants.R_HEADS;
import static org.eclipse.jgit.lib.Constants.R_TAGS;
import static org.eclipse.jgit.lib.Ref.Storage.LOOSE;
import static org.eclipse.jgit.lib.Ref.Storage.NEW;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertNotSame;
import static org.junit.Assert.assertNull;
import static org.junit.Assert.assertSame;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;
import java.util.Map;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.concurrent.atomic.AtomicReference;
import org.eclipse.jgit.events.ListenerHandle;
import org.eclipse.jgit.events.RefsChangedEvent;
import org.eclipse.jgit.events.RefsChangedListener;
import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase;
import org.eclipse.jgit.junit.TestRepository;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.BatchRefUpdate;
import org.eclipse.jgit.lib.ProgressMonitor;
import org.eclipse.jgit.lib.NullProgressMonitor;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.Ref.Storage;
import org.eclipse.jgit.lib.RefDatabase;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevTag;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.transport.ReceiveCommand;
import org.eclipse.jgit.transport.ReceiveCommand.Type;
import org.junit.Before;
import org.junit.Test;
public class RefDirectoryTest extends LocalDiskRepositoryTestCase {
private Repository diskRepo;
private TestRepository<Repository> repo;
private RefDirectory refdir;
private RevCommit A;
private RevCommit B;
private RevTag v1_0;
@Before
public void setUp() throws Exception {
super.setUp();
diskRepo = createBareRepository();
refdir = (RefDirectory) diskRepo.getRefDatabase();
repo = new TestRepository<Repository>(diskRepo);
A = repo.commit().create();
B = repo.commit(repo.getRevWalk().parseCommit(A));
v1_0 = repo.tag("v1_0", B);
repo.getRevWalk().parseBody(v1_0);
}
@Test
public void testCreate() throws IOException {
// setUp above created the directory. We just have to test it.
File d = diskRepo.getDirectory();
assertSame(diskRepo, refdir.getRepository());
assertTrue(new File(d, "refs").isDirectory());
assertTrue(new File(d, "logs").isDirectory());
assertTrue(new File(d, "logs/refs").isDirectory());
assertFalse(new File(d, "packed-refs").exists());
assertTrue(new File(d, "refs/heads").isDirectory());
assertTrue(new File(d, "refs/tags").isDirectory());
assertEquals(2, new File(d, "refs").list().length);
assertEquals(0, new File(d, "refs/heads").list().length);
assertEquals(0, new File(d, "refs/tags").list().length);
assertTrue(new File(d, "logs/refs/heads").isDirectory());
assertFalse(new File(d, "logs/HEAD").exists());
assertEquals(0, new File(d, "logs/refs/heads").list().length);
assertEquals("ref: refs/heads/master\n", read(new File(d, HEAD)));
}
@Test
public void testGetRefs_EmptyDatabase() throws IOException {
Map<String, Ref> all;
all = refdir.getRefs(RefDatabase.ALL);
assertTrue("no references", all.isEmpty());
all = refdir.getRefs(R_HEADS);
assertTrue("no references", all.isEmpty());
all = refdir.getRefs(R_TAGS);
assertTrue("no references", all.isEmpty());
}
@Test
public void testGetRefs_HeadOnOneBranch() throws IOException {
Map<String, Ref> all;
Ref head, master;
writeLooseRef("refs/heads/master", A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, all.size());
assertTrue("has HEAD", all.containsKey(HEAD));
assertTrue("has master", all.containsKey("refs/heads/master"));
head = all.get(HEAD);
master = all.get("refs/heads/master");
assertEquals(HEAD, head.getName());
assertTrue(head.isSymbolic());
assertSame(LOOSE, head.getStorage());
assertSame("uses same ref as target", master, head.getTarget());
assertEquals("refs/heads/master", master.getName());
assertFalse(master.isSymbolic());
assertSame(LOOSE, master.getStorage());
assertEquals(A, master.getObjectId());
}
@Test
public void testGetRefs_DeatchedHead1() throws IOException {
Map<String, Ref> all;
Ref head;
writeLooseRef(HEAD, A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, all.size());
assertTrue("has HEAD", all.containsKey(HEAD));
head = all.get(HEAD);
assertEquals(HEAD, head.getName());
assertFalse(head.isSymbolic());
assertSame(LOOSE, head.getStorage());
assertEquals(A, head.getObjectId());
}
@Test
public void testGetRefs_DeatchedHead2() throws IOException {
Map<String, Ref> all;
Ref head, master;
writeLooseRef(HEAD, A);
writeLooseRef("refs/heads/master", B);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, all.size());
head = all.get(HEAD);
master = all.get("refs/heads/master");
assertEquals(HEAD, head.getName());
assertFalse(head.isSymbolic());
assertSame(LOOSE, head.getStorage());
assertEquals(A, head.getObjectId());
assertEquals("refs/heads/master", master.getName());
assertFalse(master.isSymbolic());
assertSame(LOOSE, master.getStorage());
assertEquals(B, master.getObjectId());
}
@Test
public void testGetRefs_DeeplyNestedBranch() throws IOException {
String name = "refs/heads/a/b/c/d/e/f/g/h/i/j/k";
Map<String, Ref> all;
Ref r;
writeLooseRef(name, A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, all.size());
r = all.get(name);
assertEquals(name, r.getName());
assertFalse(r.isSymbolic());
assertSame(LOOSE, r.getStorage());
assertEquals(A, r.getObjectId());
}
@Test
public void testGetRefs_HeadBranchNotBorn() throws IOException {
Map<String, Ref> all;
Ref a, b;
writeLooseRef("refs/heads/A", A);
writeLooseRef("refs/heads/B", B);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, all.size());
assertFalse("no HEAD", all.containsKey(HEAD));
a = all.get("refs/heads/A");
b = all.get("refs/heads/B");
assertEquals(A, a.getObjectId());
assertEquals(B, b.getObjectId());
assertEquals("refs/heads/A", a.getName());
assertEquals("refs/heads/B", b.getName());
}
@Test
public void testGetRefs_LooseOverridesPacked() throws IOException {
Map<String, Ref> heads;
Ref a;
writeLooseRef("refs/heads/master", B);
writePackedRef("refs/heads/master", A);
heads = refdir.getRefs(R_HEADS);
assertEquals(1, heads.size());
a = heads.get("master");
assertEquals("refs/heads/master", a.getName());
assertEquals(B, a.getObjectId());
}
@Test
public void testGetRefs_IgnoresGarbageRef1() throws IOException {
Map<String, Ref> heads;
Ref a;
writeLooseRef("refs/heads/A", A);
write(new File(diskRepo.getDirectory(), "refs/heads/bad"), "FAIL\n");
heads = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, heads.size());
a = heads.get("refs/heads/A");
assertEquals("refs/heads/A", a.getName());
assertEquals(A, a.getObjectId());
}
@Test
public void testGetRefs_IgnoresGarbageRef2() throws IOException {
Map<String, Ref> heads;
Ref a;
writeLooseRef("refs/heads/A", A);
write(new File(diskRepo.getDirectory(), "refs/heads/bad"), "");
heads = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, heads.size());
a = heads.get("refs/heads/A");
assertEquals("refs/heads/A", a.getName());
assertEquals(A, a.getObjectId());
}
@Test
public void testGetRefs_IgnoresGarbageRef3() throws IOException {
Map<String, Ref> heads;
Ref a;
writeLooseRef("refs/heads/A", A);
write(new File(diskRepo.getDirectory(), "refs/heads/bad"), "\n");
heads = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, heads.size());
a = heads.get("refs/heads/A");
assertEquals("refs/heads/A", a.getName());
assertEquals(A, a.getObjectId());
}
@Test
public void testGetRefs_IgnoresGarbageRef4() throws IOException {
Map<String, Ref> heads;
Ref a, b, c;
writeLooseRef("refs/heads/A", A);
writeLooseRef("refs/heads/B", B);
writeLooseRef("refs/heads/C", A);
heads = refdir.getRefs(RefDatabase.ALL);
assertEquals(3, heads.size());
assertTrue(heads.containsKey("refs/heads/A"));
assertTrue(heads.containsKey("refs/heads/B"));
assertTrue(heads.containsKey("refs/heads/C"));
writeLooseRef("refs/heads/B", "FAIL\n");
heads = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, heads.size());
a = heads.get("refs/heads/A");
b = heads.get("refs/heads/B");
c = heads.get("refs/heads/C");
assertEquals("refs/heads/A", a.getName());
assertEquals(A, a.getObjectId());
assertNull("no refs/heads/B", b);
assertEquals("refs/heads/C", c.getName());
assertEquals(A, c.getObjectId());
}
@Test
public void testGetRefs_InvalidName() throws IOException {
writeLooseRef("refs/heads/A", A);
assertTrue("empty refs/heads", refdir.getRefs("refs/heads").isEmpty());
assertTrue("empty objects", refdir.getRefs("objects").isEmpty());
assertTrue("empty objects/", refdir.getRefs("objects/").isEmpty());
}
@Test
public void testReadNotExistingBranchConfig() throws IOException {
assertNull("find branch config", refdir.getRef("config"));
assertNull("find branch config", refdir.getRef("refs/heads/config"));
}
@Test
public void testReadBranchConfig() throws IOException {
writeLooseRef("refs/heads/config", A);
assertNotNull("find branch config", refdir.getRef("config"));
}
@Test
public void testGetRefs_HeadsOnly_AllLoose() throws IOException {
Map<String, Ref> heads;
Ref a, b;
writeLooseRef("refs/heads/A", A);
writeLooseRef("refs/heads/B", B);
writeLooseRef("refs/tags/v1.0", v1_0);
heads = refdir.getRefs(R_HEADS);
assertEquals(2, heads.size());
a = heads.get("A");
b = heads.get("B");
assertEquals("refs/heads/A", a.getName());
assertEquals("refs/heads/B", b.getName());
assertEquals(A, a.getObjectId());
assertEquals(B, b.getObjectId());
}
@Test
public void testGetRefs_HeadsOnly_AllPacked1() throws IOException {
Map<String, Ref> heads;
Ref a;
deleteLooseRef(HEAD);
writePackedRef("refs/heads/A", A);
heads = refdir.getRefs(R_HEADS);
assertEquals(1, heads.size());
a = heads.get("A");
assertEquals("refs/heads/A", a.getName());
assertEquals(A, a.getObjectId());
}
@Test
public void testGetRefs_HeadsOnly_SymrefToPacked() throws IOException {
Map<String, Ref> heads;
Ref master, other;
writeLooseRef("refs/heads/other", "ref: refs/heads/master\n");
writePackedRef("refs/heads/master", A);
heads = refdir.getRefs(R_HEADS);
assertEquals(2, heads.size());
master = heads.get("master");
other = heads.get("other");
assertEquals("refs/heads/master", master.getName());
assertEquals(A, master.getObjectId());
assertEquals("refs/heads/other", other.getName());
assertEquals(A, other.getObjectId());
assertSame(master, other.getTarget());
}
@Test
public void testGetRefs_HeadsOnly_Mixed() throws IOException {
Map<String, Ref> heads;
Ref a, b;
writeLooseRef("refs/heads/A", A);
writeLooseRef("refs/heads/B", B);
writePackedRef("refs/tags/v1.0", v1_0);
heads = refdir.getRefs(R_HEADS);
assertEquals(2, heads.size());
a = heads.get("A");
b = heads.get("B");
assertEquals("refs/heads/A", a.getName());
assertEquals("refs/heads/B", b.getName());
assertEquals(A, a.getObjectId());
assertEquals(B, b.getObjectId());
}
@Test
public void testGetRefs_TagsOnly_AllLoose() throws IOException {
Map<String, Ref> tags;
Ref a;
writeLooseRef("refs/heads/A", A);
writeLooseRef("refs/tags/v1.0", v1_0);
tags = refdir.getRefs(R_TAGS);
assertEquals(1, tags.size());
a = tags.get("v1.0");
assertEquals("refs/tags/v1.0", a.getName());
assertEquals(v1_0, a.getObjectId());
}
@Test
public void testGetRefs_LooseSortedCorrectly() throws IOException {
Map<String, Ref> refs;
writeLooseRef("refs/heads/project1/A", A);
writeLooseRef("refs/heads/project1-B", B);
refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, refs.size());
assertEquals(A, refs.get("refs/heads/project1/A").getObjectId());
assertEquals(B, refs.get("refs/heads/project1-B").getObjectId());
}
@Test
public void testGetRefs_LooseSorting_Bug_348834() throws IOException {
Map<String, Ref> refs;
writeLooseRef("refs/heads/my/a+b", A);
writeLooseRef("refs/heads/my/a/b/c", B);
final int[] count = new int[1];
ListenerHandle listener = Repository.getGlobalListenerList()
.addRefsChangedListener(new RefsChangedListener() {
public void onRefsChanged(RefsChangedEvent event) {
count[0]++;
}
});
refs = refdir.getRefs(RefDatabase.ALL);
refs = refdir.getRefs(RefDatabase.ALL);
listener.remove();
assertEquals(1, count[0]); // Bug 348834 multiple RefsChangedEvents
assertEquals(2, refs.size());
assertEquals(A, refs.get("refs/heads/my/a+b").getObjectId());
assertEquals(B, refs.get("refs/heads/my/a/b/c").getObjectId());
}
@Test
public void testGetRefs_TagsOnly_AllPacked() throws IOException {
Map<String, Ref> tags;
Ref a;
deleteLooseRef(HEAD);
writePackedRef("refs/tags/v1.0", v1_0);
tags = refdir.getRefs(R_TAGS);
assertEquals(1, tags.size());
a = tags.get("v1.0");
assertEquals("refs/tags/v1.0", a.getName());
assertEquals(v1_0, a.getObjectId());
}
@Test
public void testGetRefs_DiscoversNewLoose1() throws IOException {
Map<String, Ref> orig, next;
Ref orig_r, next_r;
writeLooseRef("refs/heads/master", A);
orig = refdir.getRefs(RefDatabase.ALL);
writeLooseRef("refs/heads/next", B);
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, orig.size());
assertEquals(3, next.size());
assertFalse(orig.containsKey("refs/heads/next"));
assertTrue(next.containsKey("refs/heads/next"));
orig_r = orig.get("refs/heads/master");
next_r = next.get("refs/heads/master");
assertEquals(A, orig_r.getObjectId());
assertSame("uses cached instance", orig_r, next_r);
assertSame("same HEAD", orig_r, orig.get(HEAD).getTarget());
assertSame("same HEAD", orig_r, next.get(HEAD).getTarget());
next_r = next.get("refs/heads/next");
assertSame(LOOSE, next_r.getStorage());
assertEquals(B, next_r.getObjectId());
}
@Test
public void testGetRefs_DiscoversNewLoose2() throws IOException {
Map<String, Ref> orig, next, news;
writeLooseRef("refs/heads/pu", A);
orig = refdir.getRefs(RefDatabase.ALL);
writeLooseRef("refs/heads/new/B", B);
news = refdir.getRefs("refs/heads/new/");
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(1, orig.size());
assertEquals(2, next.size());
assertEquals(1, news.size());
assertTrue(orig.containsKey("refs/heads/pu"));
assertTrue(next.containsKey("refs/heads/pu"));
assertFalse(news.containsKey("refs/heads/pu"));
assertFalse(orig.containsKey("refs/heads/new/B"));
assertTrue(next.containsKey("refs/heads/new/B"));
assertTrue(news.containsKey("B"));
}
@Test
public void testGetRefs_DiscoversModifiedLoose() throws IOException {
Map<String, Ref> all;
writeLooseRef("refs/heads/master", A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(A, all.get(HEAD).getObjectId());
writeLooseRef("refs/heads/master", B);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(B, all.get(HEAD).getObjectId());
}
@Test
public void testGetRef_DiscoversModifiedLoose() throws IOException {
Map<String, Ref> all;
writeLooseRef("refs/heads/master", A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(A, all.get(HEAD).getObjectId());
writeLooseRef("refs/heads/master", B);
Ref master = refdir.getRef("refs/heads/master");
assertEquals(B, master.getObjectId());
}
@Test
public void testGetRefs_DiscoversDeletedLoose1() throws IOException {
Map<String, Ref> orig, next;
Ref orig_r, next_r;
writeLooseRef("refs/heads/B", B);
writeLooseRef("refs/heads/master", A);
orig = refdir.getRefs(RefDatabase.ALL);
deleteLooseRef("refs/heads/B");
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(3, orig.size());
assertEquals(2, next.size());
assertTrue(orig.containsKey("refs/heads/B"));
assertFalse(next.containsKey("refs/heads/B"));
orig_r = orig.get("refs/heads/master");
next_r = next.get("refs/heads/master");
assertEquals(A, orig_r.getObjectId());
assertSame("uses cached instance", orig_r, next_r);
assertSame("same HEAD", orig_r, orig.get(HEAD).getTarget());
assertSame("same HEAD", orig_r, next.get(HEAD).getTarget());
orig_r = orig.get("refs/heads/B");
assertSame(LOOSE, orig_r.getStorage());
assertEquals(B, orig_r.getObjectId());
}
@Test
public void testGetRef_DiscoversDeletedLoose() throws IOException {
Map<String, Ref> all;
writeLooseRef("refs/heads/master", A);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(A, all.get(HEAD).getObjectId());
deleteLooseRef("refs/heads/master");
assertNull(refdir.getRef("refs/heads/master"));
assertTrue(refdir.getRefs(RefDatabase.ALL).isEmpty());
}
@Test
public void testGetRefs_DiscoversDeletedLoose2() throws IOException {
Map<String, Ref> orig, next;
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/pu", B);
orig = refdir.getRefs(RefDatabase.ALL);
deleteLooseRef("refs/heads/pu");
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(3, orig.size());
assertEquals(2, next.size());
assertTrue(orig.containsKey("refs/heads/pu"));
assertFalse(next.containsKey("refs/heads/pu"));
}
@Test
public void testGetRefs_DiscoversDeletedLoose3() throws IOException {
Map<String, Ref> orig, next;
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/next", B);
writeLooseRef("refs/heads/pu", B);
writeLooseRef("refs/tags/v1.0", v1_0);
orig = refdir.getRefs(RefDatabase.ALL);
deleteLooseRef("refs/heads/pu");
deleteLooseRef("refs/heads/next");
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(5, orig.size());
assertEquals(3, next.size());
assertTrue(orig.containsKey("refs/heads/pu"));
assertTrue(orig.containsKey("refs/heads/next"));
assertFalse(next.containsKey("refs/heads/pu"));
assertFalse(next.containsKey("refs/heads/next"));
}
@Test
public void testGetRefs_DiscoversDeletedLoose4() throws IOException {
Map<String, Ref> orig, next;
Ref orig_r, next_r;
writeLooseRef("refs/heads/B", B);
writeLooseRef("refs/heads/master", A);
orig = refdir.getRefs(RefDatabase.ALL);
deleteLooseRef("refs/heads/master");
next = refdir.getRefs("refs/heads/");
assertEquals(3, orig.size());
assertEquals(1, next.size());
assertTrue(orig.containsKey("refs/heads/B"));
assertTrue(orig.containsKey("refs/heads/master"));
assertTrue(next.containsKey("B"));
assertFalse(next.containsKey("master"));
orig_r = orig.get("refs/heads/B");
next_r = next.get("B");
assertEquals(B, orig_r.getObjectId());
assertSame("uses cached instance", orig_r, next_r);
}
@Test
public void testGetRefs_DiscoversDeletedLoose5() throws IOException {
Map<String, Ref> orig, next;
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/pu", B);
orig = refdir.getRefs(RefDatabase.ALL);
deleteLooseRef("refs/heads/pu");
writeLooseRef("refs/tags/v1.0", v1_0);
next = refdir.getRefs(RefDatabase.ALL);
assertEquals(3, orig.size());
assertEquals(3, next.size());
assertTrue(orig.containsKey("refs/heads/pu"));
assertFalse(orig.containsKey("refs/tags/v1.0"));
assertFalse(next.containsKey("refs/heads/pu"));
assertTrue(next.containsKey("refs/tags/v1.0"));
}
@Test
public void testGetRefs_SkipsLockFiles() throws IOException {
Map<String, Ref> all;
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/pu.lock", B);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(2, all.size());
assertTrue(all.containsKey(HEAD));
assertTrue(all.containsKey("refs/heads/master"));
assertFalse(all.containsKey("refs/heads/pu.lock"));
}
@Test
public void testGetRefs_CycleInSymbolicRef() throws IOException {
Map<String, Ref> all;
Ref r;
writeLooseRef("refs/1", "ref: refs/2\n");
writeLooseRef("refs/2", "ref: refs/3\n");
writeLooseRef("refs/3", "ref: refs/4\n");
writeLooseRef("refs/4", "ref: refs/5\n");
writeLooseRef("refs/5", "ref: refs/end\n");
writeLooseRef("refs/end", A);
all = refdir.getRefs(RefDatabase.ALL);
r = all.get("refs/1");
assertNotNull("has 1", r);
assertEquals("refs/1", r.getName());
assertEquals(A, r.getObjectId());
assertTrue(r.isSymbolic());
r = r.getTarget();
assertEquals("refs/2", r.getName());
assertEquals(A, r.getObjectId());
assertTrue(r.isSymbolic());
r = r.getTarget();
assertEquals("refs/3", r.getName());
assertEquals(A, r.getObjectId());
assertTrue(r.isSymbolic());
r = r.getTarget();
assertEquals("refs/4", r.getName());
assertEquals(A, r.getObjectId());
assertTrue(r.isSymbolic());
r = r.getTarget();
assertEquals("refs/5", r.getName());
assertEquals(A, r.getObjectId());
assertTrue(r.isSymbolic());
r = r.getTarget();
assertEquals("refs/end", r.getName());
assertEquals(A, r.getObjectId());
assertFalse(r.isSymbolic());
writeLooseRef("refs/5", "ref: refs/6\n");
writeLooseRef("refs/6", "ref: refs/end\n");
all = refdir.getRefs(RefDatabase.ALL);
r = all.get("refs/1");
assertNull("mising 1 due to cycle", r);
}
@Test
public void testGetRefs_PackedNotPeeled_Sorted() throws IOException {
Map<String, Ref> all;
writePackedRefs("" + //
A.name() + " refs/heads/master\n" + //
B.name() + " refs/heads/other\n" + //
v1_0.name() + " refs/tags/v1.0\n");
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(4, all.size());
final Ref head = all.get(HEAD);
final Ref master = all.get("refs/heads/master");
final Ref other = all.get("refs/heads/other");
final Ref tag = all.get("refs/tags/v1.0");
assertEquals(A, master.getObjectId());
assertFalse(master.isPeeled());
assertNull(master.getPeeledObjectId());
assertEquals(B, other.getObjectId());
assertFalse(other.isPeeled());
assertNull(other.getPeeledObjectId());
assertSame(master, head.getTarget());
assertEquals(A, head.getObjectId());
assertFalse(head.isPeeled());
assertNull(head.getPeeledObjectId());
assertEquals(v1_0, tag.getObjectId());
assertFalse(tag.isPeeled());
assertNull(tag.getPeeledObjectId());
}
@Test
public void testGetRef_PackedNotPeeled_WrongSort() throws IOException {
writePackedRefs("" + //
v1_0.name() + " refs/tags/v1.0\n" + //
B.name() + " refs/heads/other\n" + //
A.name() + " refs/heads/master\n");
final Ref head = refdir.getRef(HEAD);
final Ref master = refdir.getRef("refs/heads/master");
final Ref other = refdir.getRef("refs/heads/other");
final Ref tag = refdir.getRef("refs/tags/v1.0");
assertEquals(A, master.getObjectId());
assertFalse(master.isPeeled());
assertNull(master.getPeeledObjectId());
assertEquals(B, other.getObjectId());
assertFalse(other.isPeeled());
assertNull(other.getPeeledObjectId());
assertSame(master, head.getTarget());
assertEquals(A, head.getObjectId());
assertFalse(head.isPeeled());
assertNull(head.getPeeledObjectId());
assertEquals(v1_0, tag.getObjectId());
assertFalse(tag.isPeeled());
assertNull(tag.getPeeledObjectId());
}
@Test
public void testGetRefs_PackedWithPeeled() throws IOException {
Map<String, Ref> all;
writePackedRefs("# pack-refs with: peeled \n" + //
A.name() + " refs/heads/master\n" + //
B.name() + " refs/heads/other\n" + //
v1_0.name() + " refs/tags/v1.0\n" + //
"^" + v1_0.getObject().name() + "\n");
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(4, all.size());
final Ref head = all.get(HEAD);
final Ref master = all.get("refs/heads/master");
final Ref other = all.get("refs/heads/other");
final Ref tag = all.get("refs/tags/v1.0");
assertEquals(A, master.getObjectId());
assertTrue(master.isPeeled());
assertNull(master.getPeeledObjectId());
assertEquals(B, other.getObjectId());
assertTrue(other.isPeeled());
assertNull(other.getPeeledObjectId());
assertSame(master, head.getTarget());
assertEquals(A, head.getObjectId());
assertTrue(head.isPeeled());
assertNull(head.getPeeledObjectId());
assertEquals(v1_0, tag.getObjectId());
assertTrue(tag.isPeeled());
assertEquals(v1_0.getObject(), tag.getPeeledObjectId());
}
@Test
public void test_repack() throws Exception {
Map<String, Ref> all;
writePackedRefs("# pack-refs with: peeled \n" + //
A.name() + " refs/heads/master\n" + //
B.name() + " refs/heads/other\n" + //
v1_0.name() + " refs/tags/v1.0\n" + //
"^" + v1_0.getObject().name() + "\n");
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(4, all.size());
assertEquals(Storage.LOOSE, all.get(HEAD).getStorage());
assertEquals(Storage.PACKED, all.get("refs/heads/master").getStorage());
assertEquals(A.getId(), all.get("refs/heads/master").getObjectId());
assertEquals(Storage.PACKED, all.get("refs/heads/other").getStorage());
assertEquals(Storage.PACKED, all.get("refs/tags/v1.0").getStorage());
repo.update("refs/heads/master", B.getId());
RevTag v0_1 = repo.tag("v0.1", A);
repo.update("refs/tags/v0.1", v0_1);
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(5, all.size());
assertEquals(Storage.LOOSE, all.get(HEAD).getStorage());
// Why isn't the next ref LOOSE_PACKED?
assertEquals(Storage.LOOSE, all.get("refs/heads/master")
.getStorage());
assertEquals(B.getId(), all.get("refs/heads/master").getObjectId());
assertEquals(Storage.PACKED, all.get("refs/heads/other").getStorage());
assertEquals(Storage.PACKED, all.get("refs/tags/v1.0").getStorage());
assertEquals(Storage.LOOSE, all.get("refs/tags/v0.1").getStorage());
assertEquals(v0_1.getId(), all.get("refs/tags/v0.1").getObjectId());
all = refdir.getRefs(RefDatabase.ALL);
refdir.pack(new ArrayList<String>(all.keySet()));
all = refdir.getRefs(RefDatabase.ALL);
assertEquals(5, all.size());
assertEquals(Storage.LOOSE, all.get(HEAD).getStorage());
// Why isn't the next ref LOOSE_PACKED?
assertEquals(Storage.PACKED, all.get("refs/heads/master").getStorage());
assertEquals(B.getId(), all.get("refs/heads/master").getObjectId());
assertEquals(Storage.PACKED, all.get("refs/heads/other").getStorage());
assertEquals(Storage.PACKED, all.get("refs/tags/v1.0").getStorage());
assertEquals(Storage.PACKED, all.get("refs/tags/v0.1").getStorage());
assertEquals(v0_1.getId(), all.get("refs/tags/v0.1").getObjectId());
}
@Test
public void testGetRef_EmptyDatabase() throws IOException {
Ref r;
r = refdir.getRef(HEAD);
assertTrue(r.isSymbolic());
assertSame(LOOSE, r.getStorage());
assertEquals("refs/heads/master", r.getTarget().getName());
assertSame(NEW, r.getTarget().getStorage());
assertNull(r.getTarget().getObjectId());
assertNull(refdir.getRef("refs/heads/master"));
assertNull(refdir.getRef("refs/tags/v1.0"));
assertNull(refdir.getRef("FETCH_HEAD"));
assertNull(refdir.getRef("NOT.A.REF.NAME"));
assertNull(refdir.getRef("master"));
assertNull(refdir.getRef("v1.0"));
}
@Test
public void testGetRef_FetchHead() throws IOException {
// This is an odd special case where we need to make sure we read
// exactly the first 40 bytes of the file and nothing further on
// that line, or the remainder of the file.
write(new File(diskRepo.getDirectory(), "FETCH_HEAD"), A.name()
+ "\tnot-for-merge"
+ "\tbranch 'master' of git://egit.eclipse.org/jgit\n");
Ref r = refdir.getRef("FETCH_HEAD");
assertFalse(r.isSymbolic());
assertEquals(A, r.getObjectId());
assertEquals("FETCH_HEAD", r.getName());
assertFalse(r.isPeeled());
assertNull(r.getPeeledObjectId());
}
@Test
public void testGetRef_AnyHeadWithGarbage() throws IOException {
write(new File(diskRepo.getDirectory(), "refs/heads/A"), A.name()
+ "012345 . this is not a standard reference\n"
+ "#and even more junk\n");
Ref r = refdir.getRef("refs/heads/A");
assertFalse(r.isSymbolic());
assertEquals(A, r.getObjectId());
assertEquals("refs/heads/A", r.getName());
assertFalse(r.isPeeled());
assertNull(r.getPeeledObjectId());
}
@Test
public void testGetRefs_CorruptSymbolicReference() throws IOException {
String name = "refs/heads/A";
writeLooseRef(name, "ref: \n");
assertTrue(refdir.getRefs(RefDatabase.ALL).isEmpty());
}
@Test
public void testGetRef_CorruptSymbolicReference() throws IOException {
String name = "refs/heads/A";
writeLooseRef(name, "ref: \n");
try {
refdir.getRef(name);
fail("read an invalid reference");
} catch (IOException err) {
String msg = err.getMessage();
assertEquals("Not a ref: " + name + ": ref:", msg);
}
}
@Test
public void testGetRefs_CorruptObjectIdReference() throws IOException {
String name = "refs/heads/A";
String content = "zoo" + A.name();
writeLooseRef(name, content + "\n");
assertTrue(refdir.getRefs(RefDatabase.ALL).isEmpty());
}
@Test
public void testGetRef_CorruptObjectIdReference() throws IOException {
String name = "refs/heads/A";
String content = "zoo" + A.name();
writeLooseRef(name, content + "\n");
try {
refdir.getRef(name);
fail("read an invalid reference");
} catch (IOException err) {
String msg = err.getMessage();
assertEquals("Not a ref: " + name + ": " + content, msg);
}
}
@Test
public void testIsNameConflicting() throws IOException {
writeLooseRef("refs/heads/a/b", A);
writePackedRef("refs/heads/q", B);
// new references cannot replace an existing container
assertTrue(refdir.isNameConflicting("refs"));
assertTrue(refdir.isNameConflicting("refs/heads"));
assertTrue(refdir.isNameConflicting("refs/heads/a"));
// existing reference is not conflicting
assertFalse(refdir.isNameConflicting("refs/heads/a/b"));
// new references are not conflicting
assertFalse(refdir.isNameConflicting("refs/heads/a/d"));
assertFalse(refdir.isNameConflicting("refs/heads/master"));
// existing reference must not be used as a container
assertTrue(refdir.isNameConflicting("refs/heads/a/b/c"));
assertTrue(refdir.isNameConflicting("refs/heads/q/master"));
}
@Test
public void testPeelLooseTag() throws IOException {
writeLooseRef("refs/tags/v1_0", v1_0);
writeLooseRef("refs/tags/current", "ref: refs/tags/v1_0\n");
final Ref tag = refdir.getRef("refs/tags/v1_0");
final Ref cur = refdir.getRef("refs/tags/current");
assertEquals(v1_0, tag.getObjectId());
assertFalse(tag.isSymbolic());
assertFalse(tag.isPeeled());
assertNull(tag.getPeeledObjectId());
assertEquals(v1_0, cur.getObjectId());
assertTrue(cur.isSymbolic());
assertFalse(cur.isPeeled());
assertNull(cur.getPeeledObjectId());
final Ref tag_p = refdir.peel(tag);
final Ref cur_p = refdir.peel(cur);
assertNotSame(tag, tag_p);
assertFalse(tag_p.isSymbolic());
assertTrue(tag_p.isPeeled());
assertEquals(v1_0, tag_p.getObjectId());
assertEquals(v1_0.getObject(), tag_p.getPeeledObjectId());
assertSame(tag_p, refdir.peel(tag_p));
assertNotSame(cur, cur_p);
assertEquals("refs/tags/current", cur_p.getName());
assertTrue(cur_p.isSymbolic());
assertEquals("refs/tags/v1_0", cur_p.getTarget().getName());
assertTrue(cur_p.isPeeled());
assertEquals(v1_0, cur_p.getObjectId());
assertEquals(v1_0.getObject(), cur_p.getPeeledObjectId());
// reuses cached peeling later, but not immediately due to
// the implementation so we have to fetch it once.
final Ref tag_p2 = refdir.getRef("refs/tags/v1_0");
assertFalse(tag_p2.isSymbolic());
assertTrue(tag_p2.isPeeled());
assertEquals(v1_0, tag_p2.getObjectId());
assertEquals(v1_0.getObject(), tag_p2.getPeeledObjectId());
assertSame(tag_p2, refdir.getRef("refs/tags/v1_0"));
assertSame(tag_p2, refdir.getRef("refs/tags/current").getTarget());
assertSame(tag_p2, refdir.peel(tag_p2));
}
@Test
public void testPeelCommit() throws IOException {
writeLooseRef("refs/heads/master", A);
Ref master = refdir.getRef("refs/heads/master");
assertEquals(A, master.getObjectId());
assertFalse(master.isPeeled());
assertNull(master.getPeeledObjectId());
Ref master_p = refdir.peel(master);
assertNotSame(master, master_p);
assertEquals(A, master_p.getObjectId());
assertTrue(master_p.isPeeled());
assertNull(master_p.getPeeledObjectId());
// reuses cached peeling later, but not immediately due to
// the implementation so we have to fetch it once.
Ref master_p2 = refdir.getRef("refs/heads/master");
assertNotSame(master, master_p2);
assertEquals(A, master_p2.getObjectId());
assertTrue(master_p2.isPeeled());
assertNull(master_p2.getPeeledObjectId());
assertSame(master_p2, refdir.peel(master_p2));
}
@Test
public void testRefsChangedStackOverflow() throws Exception {
final FileRepository newRepo = createBareRepository();
final RefDatabase refDb = newRepo.getRefDatabase();
File packedRefs = new File(newRepo.getDirectory(), "packed-refs");
assertTrue(packedRefs.createNewFile());
final AtomicReference<StackOverflowError> error = new AtomicReference<StackOverflowError>();
final AtomicReference<IOException> exception = new AtomicReference<IOException>();
final AtomicInteger changeCount = new AtomicInteger();
newRepo.getListenerList().addRefsChangedListener(
new RefsChangedListener() {
public void onRefsChanged(RefsChangedEvent event) {
try {
refDb.getRefs("ref");
changeCount.incrementAndGet();
} catch (StackOverflowError soe) {
error.set(soe);
} catch (IOException ioe) {
exception.set(ioe);
}
}
});
refDb.getRefs("ref");
refDb.getRefs("ref");
assertNull(error.get());
assertNull(exception.get());
assertEquals(1, changeCount.get());
}
@Test
public void testBatchRefUpdateSimpleNoForce() throws IOException {
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/masters", B);
List<ReceiveCommand> commands = Arrays.asList(
newCommand(A, B, "refs/heads/master",
ReceiveCommand.Type.UPDATE),
newCommand(B, A, "refs/heads/masters",
ReceiveCommand.Type.UPDATE_NONFASTFORWARD));
BatchRefUpdate batchUpdate = refdir.newBatchUpdate();
batchUpdate.addCommand(commands);
batchUpdate.execute(new RevWalk(diskRepo), new StrictWorkMonitor());
Map<String, Ref> refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(ReceiveCommand.Result.OK, commands.get(0).getResult());
assertEquals(ReceiveCommand.Result.REJECTED_NONFASTFORWARD, commands
.get(1).getResult());
assertEquals("[HEAD, refs/heads/master, refs/heads/masters]", refs
.keySet().toString());
assertEquals(B.getId(), refs.get("refs/heads/master").getObjectId());
assertEquals(B.getId(), refs.get("refs/heads/masters").getObjectId());
}
@Test
public void testBatchRefUpdateSimpleForce() throws IOException {
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/masters", B);
List<ReceiveCommand> commands = Arrays.asList(
newCommand(A, B, "refs/heads/master",
ReceiveCommand.Type.UPDATE),
newCommand(B, A, "refs/heads/masters",
ReceiveCommand.Type.UPDATE_NONFASTFORWARD));
BatchRefUpdate batchUpdate = refdir.newBatchUpdate();
batchUpdate.setAllowNonFastForwards(true);
batchUpdate.addCommand(commands);
batchUpdate.execute(new RevWalk(diskRepo), new StrictWorkMonitor());
Map<String, Ref> refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(ReceiveCommand.Result.OK, commands.get(0).getResult());
assertEquals(ReceiveCommand.Result.OK, commands.get(1).getResult());
assertEquals("[HEAD, refs/heads/master, refs/heads/masters]", refs
.keySet().toString());
assertEquals(B.getId(), refs.get("refs/heads/master").getObjectId());
assertEquals(A.getId(), refs.get("refs/heads/masters").getObjectId());
}
@Test
public void testBatchRefUpdateNonFastForwardDoesNotDoExpensiveMergeCheck()
throws IOException {
writeLooseRef("refs/heads/master", B);
List<ReceiveCommand> commands = Arrays.asList(
newCommand(B, A, "refs/heads/master",
ReceiveCommand.Type.UPDATE_NONFASTFORWARD));
BatchRefUpdate batchUpdate = refdir.newBatchUpdate();
batchUpdate.setAllowNonFastForwards(true);
batchUpdate.addCommand(commands);
batchUpdate.execute(new RevWalk(diskRepo) {
@Override
public boolean isMergedInto(RevCommit base, RevCommit tip) {
throw new AssertionError("isMergedInto() should not be called");
}
}, new StrictWorkMonitor());
Map<String, Ref> refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(ReceiveCommand.Result.OK, commands.get(0).getResult());
assertEquals(A.getId(), refs.get("refs/heads/master").getObjectId());
}
@Test
public void testBatchRefUpdateConflict() throws IOException {
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/masters", B);
List<ReceiveCommand> commands = Arrays.asList(
newCommand(A, B, "refs/heads/master",
ReceiveCommand.Type.UPDATE),
newCommand(null, A, "refs/heads/master/x",
ReceiveCommand.Type.CREATE),
newCommand(null, A, "refs/heads", ReceiveCommand.Type.CREATE));
BatchRefUpdate batchUpdate = refdir.newBatchUpdate();
batchUpdate.setAllowNonFastForwards(true);
batchUpdate.addCommand(commands);
batchUpdate
.execute(new RevWalk(diskRepo), NullProgressMonitor.INSTANCE);
Map<String, Ref> refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(ReceiveCommand.Result.OK, commands.get(0).getResult());
assertEquals(ReceiveCommand.Result.LOCK_FAILURE, commands.get(1)
.getResult());
assertEquals(ReceiveCommand.Result.LOCK_FAILURE, commands.get(2)
.getResult());
assertEquals("[HEAD, refs/heads/master, refs/heads/masters]", refs
.keySet().toString());
assertEquals(B.getId(), refs.get("refs/heads/master").getObjectId());
assertEquals(B.getId(), refs.get("refs/heads/masters").getObjectId());
}
@Test
public void testBatchRefUpdateConflictThanksToDelete() throws IOException {
writeLooseRef("refs/heads/master", A);
writeLooseRef("refs/heads/masters", B);
List<ReceiveCommand> commands = Arrays.asList(
newCommand(A, B, "refs/heads/master",
ReceiveCommand.Type.UPDATE),
newCommand(null, A, "refs/heads/masters/x",
ReceiveCommand.Type.CREATE),
newCommand(B, null, "refs/heads/masters",
ReceiveCommand.Type.DELETE));
BatchRefUpdate batchUpdate = refdir.newBatchUpdate();
batchUpdate.setAllowNonFastForwards(true);
batchUpdate.addCommand(commands);
batchUpdate.execute(new RevWalk(diskRepo), new StrictWorkMonitor());
Map<String, Ref> refs = refdir.getRefs(RefDatabase.ALL);
assertEquals(ReceiveCommand.Result.OK, commands.get(0).getResult());
assertEquals(ReceiveCommand.Result.OK, commands.get(1).getResult());
assertEquals(ReceiveCommand.Result.OK, commands.get(2).getResult());
assertEquals("[HEAD, refs/heads/master, refs/heads/masters/x]", refs
.keySet().toString());
assertEquals(A.getId(), refs.get("refs/heads/masters/x").getObjectId());
}
private static ReceiveCommand newCommand(RevCommit a, RevCommit b,
String string, Type update) {
return new ReceiveCommand(a != null ? a.getId() : null,
b != null ? b.getId() : null, string, update);
}
private void writeLooseRef(String name, AnyObjectId id) throws IOException {
writeLooseRef(name, id.name() + "\n");
}
private void writeLooseRef(String name, String content) throws IOException {
write(new File(diskRepo.getDirectory(), name), content);
}
private void writePackedRef(String name, AnyObjectId id) throws IOException {
writePackedRefs(id.name() + " " + name + "\n");
}
private void writePackedRefs(String content) throws IOException {
File pr = new File(diskRepo.getDirectory(), "packed-refs");
write(pr, content);
final long now = System.currentTimeMillis();
final int oneHourAgo = 3600 * 1000;
pr.setLastModified(now - oneHourAgo);
}
private void deleteLooseRef(String name) {
File path = new File(diskRepo.getDirectory(), name);
assertTrue("deleted " + name, path.delete());
}
private static final class StrictWorkMonitor implements ProgressMonitor {
private int lastWork, totalWork;
public void start(int totalTasks) {
// empty
}
public void beginTask(String title, int totalWork) {
this.totalWork = totalWork;
lastWork = 0;
}
public void update(int completed) {
lastWork += completed;
}
public void endTask() {
assertEquals("Units of work recorded", totalWork, lastWork);
}
public boolean isCancelled() {
return false;
}
}
}