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|
/*
* Copyright (C) 2008, Charles O'Farrell <charleso@charleso.org>
* Copyright (C) 2009-2010, Google Inc.
* Copyright (C) 2008-2013, Robin Rosenberg <robin.rosenberg@dewire.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 java.nio.charset.StandardCharsets.UTF_8;
import static org.eclipse.jgit.junit.Assert.assertEquals;
import static org.eclipse.jgit.lib.Constants.LOCK_SUFFIX;
import static org.eclipse.jgit.lib.RefUpdate.Result.FORCED;
import static org.eclipse.jgit.lib.RefUpdate.Result.IO_FAILURE;
import static org.eclipse.jgit.lib.RefUpdate.Result.LOCK_FAILURE;
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.List;
import java.util.Map;
import java.util.Map.Entry;
import java.util.Optional;
import org.eclipse.jgit.lib.AnyObjectId;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectInserter;
import org.eclipse.jgit.lib.PersonIdent;
import org.eclipse.jgit.lib.Ref;
import org.eclipse.jgit.lib.RefDatabase;
import org.eclipse.jgit.lib.RefRename;
import org.eclipse.jgit.lib.RefUpdate;
import org.eclipse.jgit.lib.RefUpdate.Result;
import org.eclipse.jgit.lib.ReflogEntry;
import org.eclipse.jgit.lib.ReflogReader;
import org.eclipse.jgit.lib.Repository;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.revwalk.RevWalk;
import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase;
import org.junit.Test;
public class RefUpdateTest extends SampleDataRepositoryTestCase {
private void writeSymref(String src, String dst) throws IOException {
RefUpdate u = db.updateRef(src);
switch (u.link(dst)) {
case NEW:
case FORCED:
case NO_CHANGE:
break;
default:
fail("link " + src + " to " + dst);
}
}
private RefUpdate updateRef(String name) throws IOException {
final RefUpdate ref = db.updateRef(name);
ref.setNewObjectId(db.resolve(Constants.HEAD));
return ref;
}
private void delete(RefUpdate ref, Result expected)
throws IOException {
delete(ref, expected, true, true);
}
private void delete(final RefUpdate ref, final Result expected,
final boolean exists, final boolean removed) throws IOException {
delete(db, ref, expected, exists, removed);
}
private void delete(Repository repo, final RefUpdate ref,
final Result expected, final boolean exists, final boolean removed)
throws IOException {
assertEquals(exists, getRef(repo, ref.getName()).isPresent());
assertEquals(expected, ref.delete());
assertEquals(!removed, getRef(repo, ref.getName()).isPresent());
}
private Optional<Ref> getRef(Repository repo, String name)
throws IOException {
return getRef(repo.getRefDatabase().getRefs(), name);
}
private Optional<Ref> getRef(List<Ref> refs, String name) {
return refs.stream().filter(r -> r.getName().equals(name)).findAny();
}
@Test
public void testNoCacheObjectIdSubclass() throws IOException {
final String newRef = "refs/heads/abc";
final RefUpdate ru = updateRef(newRef);
final SubclassedId newid = new SubclassedId(ru.getNewObjectId());
ru.setNewObjectId(newid);
Result update = ru.update();
assertEquals(Result.NEW, update);
final Ref r = getRef(db, newRef).get();
assertEquals(newRef, r.getName());
assertNotNull(r.getObjectId());
assertNotSame(newid, r.getObjectId());
assertSame(ObjectId.class, r.getObjectId().getClass());
assertEquals(newid, r.getObjectId());
List<ReflogEntry> reverseEntries1 = db.getRefDatabase()
.getReflogReader("refs/heads/abc").getReverseEntries();
ReflogEntry entry1 = reverseEntries1.get(0);
assertEquals(1, reverseEntries1.size());
assertEquals(ObjectId.zeroId(), entry1.getOldId());
assertEquals(r.getObjectId(), entry1.getNewId());
assertEquals(new PersonIdent(db).toString(),
entry1.getWho().toString());
assertEquals("", entry1.getComment());
List<ReflogEntry> reverseEntries2 = db.getRefDatabase()
.getReflogReader("HEAD").getReverseEntries();
assertEquals(0, reverseEntries2.size());
}
@Test
public void testNewNamespaceConflictWithLoosePrefixNameExists()
throws IOException {
final String newRef = "refs/heads/z";
final RefUpdate ru = updateRef(newRef);
Result update = ru.update();
assertEquals(Result.NEW, update);
// end setup
final String newRef2 = "refs/heads/z/a";
final RefUpdate ru2 = updateRef(newRef2);
Result update2 = ru2.update();
assertEquals(Result.LOCK_FAILURE, update2);
RefDatabase refDb = db.getRefDatabase();
assertEquals(1, refDb.getReflogReader("refs/heads/z")
.getReverseEntries().size());
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
@Test
public void testNewNamespaceConflictWithPackedPrefixNameExists()
throws IOException {
final String newRef = "refs/heads/master/x";
final RefUpdate ru = updateRef(newRef);
Result update = ru.update();
assertEquals(Result.LOCK_FAILURE, update);
RefDatabase refDb = db.getRefDatabase();
assertNull(refDb.getReflogReader("refs/heads/master/x"));
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
@Test
public void testNewNamespaceConflictWithLoosePrefixOfExisting()
throws IOException {
final String newRef = "refs/heads/z/a";
final RefUpdate ru = updateRef(newRef);
Result update = ru.update();
assertEquals(Result.NEW, update);
// end setup
final String newRef2 = "refs/heads/z";
final RefUpdate ru2 = updateRef(newRef2);
Result update2 = ru2.update();
assertEquals(Result.LOCK_FAILURE, update2);
RefDatabase refDb = db.getRefDatabase();
assertEquals(1, refDb.getReflogReader("refs/heads/z/a")
.getReverseEntries().size());
assertNull(refDb.getReflogReader("refs/heads/z"));
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
@Test
public void testNewNamespaceConflictWithPackedPrefixOfExisting()
throws IOException {
final String newRef = "refs/heads/prefix";
final RefUpdate ru = updateRef(newRef);
Result update = ru.update();
assertEquals(Result.LOCK_FAILURE, update);
RefDatabase refDb = db.getRefDatabase();
assertNull(refDb.getReflogReader("refs/heads/prefix"));
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
/**
* Delete a ref that is pointed to by HEAD
*
* @throws IOException
*/
@Test
public void testDeleteHEADreferencedRef() throws IOException {
ObjectId pid = db.resolve("refs/heads/master^");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(pid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update); // internal
RefUpdate updateRef2 = db.updateRef("refs/heads/master");
Result delete = updateRef2.delete();
assertEquals(Result.REJECTED_CURRENT_BRANCH, delete);
assertEquals(pid, db.resolve("refs/heads/master"));
RefDatabase refDb = db.getRefDatabase();
assertEquals(1, refDb.getReflogReader("refs/heads/master")
.getReverseEntries().size());
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
@Test
public void testWriteReflog() throws IOException {
ObjectId pid = db.resolve("refs/heads/master^");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(pid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
assertEquals(1, db.getRefDatabase().getReflogReader("refs/heads/master")
.getReverseEntries().size());
}
@Test
public void testLooseDelete() throws IOException {
final String newRef = "refs/heads/abc";
RefUpdate ref = updateRef(newRef);
ref.update(); // create loose ref
ref = updateRef(newRef); // refresh
delete(ref, Result.NO_CHANGE);
assertNull(db.getRefDatabase().getReflogReader("refs/heads/abc"));
}
@Test
public void testDeleteHead() throws IOException {
final RefUpdate ref = updateRef(Constants.HEAD);
delete(ref, Result.REJECTED_CURRENT_BRANCH, true, false);
RefDatabase refDb = db.getRefDatabase();
assertEquals(0, refDb.getReflogReader("refs/heads/master")
.getReverseEntries().size());
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
}
@Test
public void testDeleteHeadInBareRepo() throws IOException {
Repository bareRepo = createBareRepository();
String master = "refs/heads/master";
Ref head = bareRepo.exactRef(Constants.HEAD);
assertNotNull(head);
assertTrue(head.isSymbolic());
assertEquals(master, head.getLeaf().getName());
assertNull(head.getObjectId());
assertNull(bareRepo.exactRef(master));
ObjectId blobId;
try (ObjectInserter ins = bareRepo.newObjectInserter()) {
blobId = ins.insert(Constants.OBJ_BLOB, "contents".getBytes(UTF_8));
ins.flush();
}
// Create master via HEAD, so we delete it.
RefUpdate ref = bareRepo.updateRef(Constants.HEAD);
ref.setNewObjectId(blobId);
assertEquals(Result.NEW, ref.update());
head = bareRepo.exactRef(Constants.HEAD);
assertTrue(head.isSymbolic());
assertEquals(master, head.getLeaf().getName());
assertEquals(blobId, head.getLeaf().getObjectId());
assertEquals(blobId, bareRepo.exactRef(master).getObjectId());
// Unlike in a non-bare repo, deleting the HEAD is allowed, and leaves HEAD
// back in a dangling state.
ref = bareRepo.updateRef(Constants.HEAD);
ref.setExpectedOldObjectId(blobId);
ref.setForceUpdate(true);
delete(bareRepo, ref, Result.FORCED, true, true);
head = bareRepo.exactRef(Constants.HEAD);
assertNotNull(head);
assertTrue(head.isSymbolic());
assertEquals(master, head.getLeaf().getName());
assertNull(head.getObjectId());
assertNull(bareRepo.exactRef(master));
}
@Test
public void testDeleteSymref() throws IOException {
RefUpdate dst = updateRef("refs/heads/abc");
assertEquals(Result.NEW, dst.update());
ObjectId id = dst.getNewObjectId();
RefUpdate u = db.updateRef("refs/symref");
assertEquals(Result.NEW, u.link(dst.getName()));
Ref ref = db.exactRef(u.getName());
assertNotNull(ref);
assertTrue(ref.isSymbolic());
assertEquals(dst.getName(), ref.getLeaf().getName());
assertEquals(id, ref.getLeaf().getObjectId());
u = db.updateRef(u.getName());
u.setDetachingSymbolicRef();
u.setForceUpdate(true);
assertEquals(Result.FORCED, u.delete());
assertNull(db.exactRef(u.getName()));
ref = db.exactRef(dst.getName());
assertNotNull(ref);
assertFalse(ref.isSymbolic());
assertEquals(id, ref.getObjectId());
}
/**
* Delete a loose ref and make sure the directory in refs is deleted too,
* and the reflog dir too
*
* @throws IOException
*/
@Test
public void testDeleteLooseAndItsDirectory() throws IOException {
ObjectId pid = db.resolve("refs/heads/c^");
RefUpdate updateRef = db.updateRef("refs/heads/z/c");
updateRef.setNewObjectId(pid);
updateRef.setForceUpdate(true);
updateRef.setRefLogMessage("new test ref", false);
Result update = updateRef.update();
assertEquals(Result.NEW, update); // internal
assertTrue(new File(db.getDirectory(), Constants.R_HEADS + "z")
.exists());
assertTrue(new File(db.getDirectory(), "logs/refs/heads/z").exists());
// The real test here
RefUpdate updateRef2 = db.updateRef("refs/heads/z/c");
updateRef2.setForceUpdate(true);
Result delete = updateRef2.delete();
assertEquals(Result.FORCED, delete);
assertNull(db.resolve("refs/heads/z/c"));
assertFalse(new File(db.getDirectory(), Constants.R_HEADS + "z")
.exists());
assertFalse(new File(db.getDirectory(), "logs/refs/heads/z").exists());
}
@Test
public void testDeleteNotFound() throws IOException {
final RefUpdate ref = updateRef("refs/heads/xyz");
delete(ref, Result.NEW, false, true);
}
@Test
public void testDeleteFastForward() throws IOException {
final RefUpdate ref = updateRef("refs/heads/a");
delete(ref, Result.FAST_FORWARD);
}
@Test
public void testDeleteForce() throws IOException {
final RefUpdate ref = db.updateRef("refs/heads/b");
ref.setNewObjectId(db.resolve("refs/heads/a"));
delete(ref, Result.REJECTED, true, false);
ref.setForceUpdate(true);
delete(ref, Result.FORCED);
}
@Test
public void testDeleteWithoutHead() throws IOException {
// Prepare repository without HEAD
RefUpdate refUpdate = db.updateRef(Constants.HEAD, true);
refUpdate.setForceUpdate(true);
refUpdate.setNewObjectId(ObjectId.zeroId());
Result updateResult = refUpdate.update();
assertEquals(Result.FORCED, updateResult);
assertEquals(ObjectId.zeroId(), db.exactRef("HEAD").getObjectId());
Result deleteHeadResult = db.updateRef(Constants.HEAD).delete();
assertEquals(Result.NO_CHANGE, deleteHeadResult);
// Any result is ok as long as it's not an NPE
db.updateRef(Constants.R_HEADS + "master").delete();
}
@Test
public void testRefKeySameAsName() {
@SuppressWarnings("deprecation")
Map<String, Ref> allRefs = db.getAllRefs();
for (Entry<String, Ref> e : allRefs.entrySet()) {
assertEquals(e.getKey(), e.getValue().getName());
}
}
/**
* Try modify a ref forward, fast forward
*
* @throws IOException
*/
@Test
public void testUpdateRefForward() throws IOException {
ObjectId ppid = db.resolve("refs/heads/master^");
ObjectId pid = db.resolve("refs/heads/master");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(ppid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
assertEquals(ppid, db.resolve("refs/heads/master"));
// real test
RefUpdate updateRef2 = db.updateRef("refs/heads/master");
updateRef2.setNewObjectId(pid);
Result update2 = updateRef2.update();
assertEquals(Result.FAST_FORWARD, update2);
assertEquals(pid, db.resolve("refs/heads/master"));
}
/**
* Update the HEAD ref. Only it should be changed, not what it points to.
*
* @throws Exception
*/
@Test
public void testUpdateRefDetached() throws Exception {
ObjectId pid = db.resolve("refs/heads/master");
ObjectId ppid = db.resolve("refs/heads/master^");
RefUpdate updateRef = db.updateRef("HEAD", true);
updateRef.setForceUpdate(true);
updateRef.setNewObjectId(ppid);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
assertEquals(ppid, db.resolve("HEAD"));
Ref ref = db.exactRef("HEAD");
assertEquals("HEAD", ref.getName());
assertTrue("is detached", !ref.isSymbolic());
// the branch HEAD referred to is left untouched
assertEquals(pid, db.resolve("refs/heads/master"));
ReflogReader reflogReader = db.getRefDatabase().getReflogReader("HEAD");
ReflogEntry e = reflogReader.getReverseEntries().get(0);
assertEquals(pid, e.getOldId());
assertEquals(ppid, e.getNewId());
assertEquals("GIT_COMMITTER_EMAIL", e.getWho().getEmailAddress());
assertEquals("GIT_COMMITTER_NAME", e.getWho().getName());
assertEquals(1250379778000L, e.getWho().getWhen().getTime());
}
/**
* Update the HEAD ref when the referenced branch is unborn
*
* @throws Exception
*/
@Test
public void testUpdateRefDetachedUnbornHead() throws Exception {
ObjectId ppid = db.resolve("refs/heads/master^");
writeSymref("HEAD", "refs/heads/unborn");
RefUpdate updateRef = db.updateRef("HEAD", true);
updateRef.setForceUpdate(true);
updateRef.setNewObjectId(ppid);
Result update = updateRef.update();
assertEquals(Result.NEW, update);
assertEquals(ppid, db.resolve("HEAD"));
Ref ref = db.exactRef("HEAD");
assertEquals("HEAD", ref.getName());
assertTrue("is detached", !ref.isSymbolic());
// the branch HEAD referred to is left untouched
assertNull(db.resolve("refs/heads/unborn"));
ReflogReader reflogReader = db.getRefDatabase().getReflogReader("HEAD");
ReflogEntry e = reflogReader.getReverseEntries().get(0);
assertEquals(ObjectId.zeroId(), e.getOldId());
assertEquals(ppid, e.getNewId());
assertEquals("GIT_COMMITTER_EMAIL", e.getWho().getEmailAddress());
assertEquals("GIT_COMMITTER_NAME", e.getWho().getName());
assertEquals(1250379778000L, e.getWho().getWhen().getTime());
}
/**
* Delete a ref that exists both as packed and loose. Make sure the ref
* cannot be resolved after delete.
*
* @throws IOException
*/
@Test
public void testDeleteLoosePacked() throws IOException {
ObjectId pid = db.resolve("refs/heads/c^");
RefUpdate updateRef = db.updateRef("refs/heads/c");
updateRef.setNewObjectId(pid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update); // internal
// The real test here
RefUpdate updateRef2 = db.updateRef("refs/heads/c");
updateRef2.setForceUpdate(true);
Result delete = updateRef2.delete();
assertEquals(Result.FORCED, delete);
assertNull(db.resolve("refs/heads/c"));
}
/**
* Try modify a ref to same
*
* @throws IOException
*/
@Test
public void testUpdateRefNoChange() throws IOException {
ObjectId pid = db.resolve("refs/heads/master");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(pid);
Result update = updateRef.update();
assertEquals(Result.NO_CHANGE, update);
assertEquals(pid, db.resolve("refs/heads/master"));
}
/**
* Test case originating from
* <a href="http://bugs.eclipse.org/285991">bug 285991</a>
*
* Make sure the in memory cache is updated properly after
* update of symref. This one did not fail because the
* ref was packed due to implementation issues.
*
* @throws Exception
*/
@Test
public void testRefsCacheAfterUpdate() throws Exception {
// Do not use the default repo for this case.
ObjectId oldValue = db.resolve("HEAD");
ObjectId newValue = db.resolve("HEAD^");
// first make HEAD refer to loose ref
RefUpdate updateRef = db.updateRef(Constants.HEAD);
updateRef.setForceUpdate(true);
updateRef.setNewObjectId(newValue);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
// now update that ref
updateRef = db.updateRef(Constants.HEAD);
updateRef.setNewObjectId(oldValue);
update = updateRef.update();
assertEquals(Result.FAST_FORWARD, update);
List<Ref> allRefs = db.getRefDatabase().getRefs();
Ref master = getRef(allRefs, "refs/heads/master").get();
Ref head = getRef(allRefs, "HEAD").get();
assertEquals("refs/heads/master", master.getName());
assertEquals("HEAD", head.getName());
assertTrue("is symbolic reference", head.isSymbolic());
assertSame(master, head.getTarget());
}
/**
* Test case originating from
* <a href="http://bugs.eclipse.org/285991">bug 285991</a>
*
* Make sure the in memory cache is updated properly after
* update of symref.
*
* @throws Exception
*/
@Test
public void testRefsCacheAfterUpdateLooseOnly() throws Exception {
// Do not use the default repo for this case.
ObjectId oldValue = db.resolve("HEAD");
writeSymref(Constants.HEAD, "refs/heads/newref");
RefUpdate updateRef = db.updateRef(Constants.HEAD);
updateRef.setForceUpdate(true);
updateRef.setNewObjectId(oldValue);
Result update = updateRef.update();
assertEquals(Result.NEW, update);
List<Ref> allRefs = db.getRefDatabase().getRefs();
Ref head = getRef(allRefs, "HEAD").get();
Ref newref = getRef(allRefs, "refs/heads/newref").get();
assertEquals("refs/heads/newref", newref.getName());
assertEquals("HEAD", head.getName());
assertTrue("is symbolic reference", head.isSymbolic());
assertSame(newref, head.getTarget());
}
/**
* Try modify a ref, but get wrong expected old value
*
* @throws IOException
*/
@Test
public void testUpdateRefLockFailureWrongOldValue() throws IOException {
ObjectId pid = db.resolve("refs/heads/master");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(pid);
updateRef.setExpectedOldObjectId(db.resolve("refs/heads/master^"));
Result update = updateRef.update();
assertEquals(Result.LOCK_FAILURE, update);
assertEquals(pid, db.resolve("refs/heads/master"));
}
/**
* Try modify a ref forward, fast forward, checking old value first
*
* @throws IOException
*/
@Test
public void testUpdateRefForwardWithCheck1() throws IOException {
ObjectId ppid = db.resolve("refs/heads/master^");
ObjectId pid = db.resolve("refs/heads/master");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(ppid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
assertEquals(ppid, db.resolve("refs/heads/master"));
// real test
RefUpdate updateRef2 = db.updateRef("refs/heads/master");
updateRef2.setExpectedOldObjectId(ppid);
updateRef2.setNewObjectId(pid);
Result update2 = updateRef2.update();
assertEquals(Result.FAST_FORWARD, update2);
assertEquals(pid, db.resolve("refs/heads/master"));
}
/**
* Try modify a ref forward, fast forward, checking old commit first
*
* @throws IOException
*/
@Test
public void testUpdateRefForwardWithCheck2() throws IOException {
ObjectId ppid = db.resolve("refs/heads/master^");
ObjectId pid = db.resolve("refs/heads/master");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(ppid);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals(Result.FORCED, update);
assertEquals(ppid, db.resolve("refs/heads/master"));
// real test
try (RevWalk rw = new RevWalk(db)) {
RevCommit old = rw.parseCommit(ppid);
RefUpdate updateRef2 = db.updateRef("refs/heads/master");
updateRef2.setExpectedOldObjectId(old);
updateRef2.setNewObjectId(pid);
Result update2 = updateRef2.update();
assertEquals(Result.FAST_FORWARD, update2);
assertEquals(pid, db.resolve("refs/heads/master"));
}
}
/**
* Try modify a ref that is locked
*
* @throws IOException
*/
@Test
public void testUpdateRefLockFailureLocked() throws IOException {
ObjectId opid = db.resolve("refs/heads/master");
ObjectId pid = db.resolve("refs/heads/master^");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(pid);
LockFile lockFile1 = new LockFile(new File(db.getDirectory(),
"refs/heads/master"));
try {
assertTrue(lockFile1.lock()); // precondition to test
Result update = updateRef.update();
assertEquals(Result.LOCK_FAILURE, update);
assertEquals(opid, db.resolve("refs/heads/master"));
LockFile lockFile2 = new LockFile(new File(db.getDirectory(),"refs/heads/master"));
assertFalse(lockFile2.lock()); // was locked, still is
} finally {
lockFile1.unlock();
}
}
/**
* Try to delete a ref. Delete requires force.
*
* @throws IOException
*/
@Test
public void testDeleteLoosePackedRejected() throws IOException {
ObjectId pid = db.resolve("refs/heads/c^");
ObjectId oldpid = db.resolve("refs/heads/c");
RefUpdate updateRef = db.updateRef("refs/heads/c");
updateRef.setNewObjectId(pid);
Result update = updateRef.update();
assertEquals(Result.REJECTED, update);
assertEquals(oldpid, db.resolve("refs/heads/c"));
}
@Test
public void testRenameBranchNoPreviousLog() throws IOException {
assertFalse("precondition, no log on old branchg", new File(db
.getDirectory(), "logs/refs/heads/b").exists());
ObjectId rb = db.resolve("refs/heads/b");
ObjectId oldHead = db.resolve(Constants.HEAD);
assertFalse(rb.equals(oldHead)); // assumption for this test
RefRename renameRef = db.renameRef("refs/heads/b",
"refs/heads/new/name");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertEquals(rb, db.resolve("refs/heads/new/name"));
assertNull(db.resolve("refs/heads/b"));
RefDatabase refDb = db.getRefDatabase();
assertEquals(1, refDb.getReflogReader("refs/heads/new/name")
.getReverseEntries().size());
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getLastEntry()
.getComment());
assertFalse(new File(db.getDirectory(), "logs/refs/heads/b").exists());
assertEquals(oldHead, db.resolve(Constants.HEAD)); // unchanged
}
@Test
public void testRenameBranchHasPreviousLog() throws IOException {
ObjectId rb = db.resolve("refs/heads/b");
ObjectId oldHead = db.resolve(Constants.HEAD);
assertFalse("precondition for this test, branch b != HEAD", rb
.equals(oldHead));
writeReflog(db, rb, "Just a message", "refs/heads/b");
assertTrue("log on old branch", new File(db.getDirectory(),
"logs/refs/heads/b").exists());
RefRename renameRef = db.renameRef("refs/heads/b",
"refs/heads/new/name");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertEquals(rb, db.resolve("refs/heads/new/name"));
assertNull(db.resolve("refs/heads/b"));
RefDatabase refDb = db.getRefDatabase();
assertEquals(2, refDb.getReflogReader("refs/heads/new/name")
.getReverseEntries().size());
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getLastEntry()
.getComment());
assertEquals("Just a message",
refDb.getReflogReader("refs/heads/new/name").getReverseEntries()
.get(1).getComment());
assertFalse(new File(db.getDirectory(), "logs/refs/heads/b").exists());
assertEquals(oldHead, db.resolve(Constants.HEAD)); // unchanged
}
@Test
public void testRenameCurrentBranch() throws IOException {
ObjectId rb = db.resolve("refs/heads/b");
writeSymref(Constants.HEAD, "refs/heads/b");
ObjectId oldHead = db.resolve(Constants.HEAD);
assertEquals("internal test condition, b == HEAD", oldHead, rb);
writeReflog(db, rb, "Just a message", "refs/heads/b");
assertTrue("log on old branch", new File(db.getDirectory(),
"logs/refs/heads/b").exists());
RefRename renameRef = db.renameRef("refs/heads/b",
"refs/heads/new/name");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertEquals(rb, db.resolve("refs/heads/new/name"));
assertNull(db.resolve("refs/heads/b"));
RefDatabase refDb = db.getRefDatabase();
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getLastEntry()
.getComment());
assertFalse(new File(db.getDirectory(), "logs/refs/heads/b").exists());
assertEquals(rb, db.resolve(Constants.HEAD));
assertEquals(2, refDb.getReflogReader("refs/heads/new/name")
.getReverseEntries().size());
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getReverseEntries()
.get(0).getComment());
assertEquals("Just a message",
refDb.getReflogReader("refs/heads/new/name").getReverseEntries()
.get(1).getComment());
}
@Test
public void testRenameBranchAlsoInPack() throws IOException {
ObjectId rb = db.resolve("refs/heads/b");
ObjectId rb2 = db.resolve("refs/heads/b~1");
assertEquals(Ref.Storage.PACKED, db.exactRef("refs/heads/b").getStorage());
RefUpdate updateRef = db.updateRef("refs/heads/b");
updateRef.setNewObjectId(rb2);
updateRef.setForceUpdate(true);
Result update = updateRef.update();
assertEquals("internal check new ref is loose", Result.FORCED, update);
assertEquals(Ref.Storage.LOOSE, db.exactRef("refs/heads/b").getStorage());
writeReflog(db, rb, "Just a message", "refs/heads/b");
assertTrue("log on old branch", new File(db.getDirectory(),
"logs/refs/heads/b").exists());
RefRename renameRef = db.renameRef("refs/heads/b",
"refs/heads/new/name");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertEquals(rb2, db.resolve("refs/heads/new/name"));
assertNull(db.resolve("refs/heads/b"));
RefDatabase refDb = db.getRefDatabase();
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getLastEntry()
.getComment());
assertEquals(3, refDb.getReflogReader("refs/heads/new/name")
.getReverseEntries().size());
assertEquals("Branch: renamed b to new/name",
refDb.getReflogReader("refs/heads/new/name").getReverseEntries()
.get(0).getComment());
assertEquals(0,
refDb.getReflogReader("HEAD").getReverseEntries().size());
// make sure b's log file is gone too.
assertFalse(new File(db.getDirectory(), "logs/refs/heads/b").exists());
// Create new Repository instance, to reread caches and make sure our
// assumptions are persistent.
try (Repository ndb = new FileRepository(db.getDirectory())) {
assertEquals(rb2, ndb.resolve("refs/heads/new/name"));
assertNull(ndb.resolve("refs/heads/b"));
}
}
public void tryRenameWhenLocked(String toLock, String fromName,
String toName, String headPointsTo) throws IOException {
// setup
writeSymref(Constants.HEAD, headPointsTo);
ObjectId oldfromId = db.resolve(fromName);
ObjectId oldHeadId = db.resolve(Constants.HEAD);
writeReflog(db, oldfromId, "Just a message", fromName);
RefDatabase refDb = db.getRefDatabase();
List<ReflogEntry> oldFromLog = refDb
.getReflogReader(fromName).getReverseEntries();
List<ReflogEntry> oldHeadLog = oldHeadId != null ? refDb
.getReflogReader(Constants.HEAD).getReverseEntries() : null;
assertTrue("internal check, we have a log", new File(db.getDirectory(),
"logs/" + fromName).exists());
// "someone" has branch X locked
LockFile lockFile = new LockFile(new File(db.getDirectory(), toLock));
try {
assertTrue(lockFile.lock());
// Now this is our test
RefRename renameRef = db.renameRef(fromName, toName);
Result result = renameRef.rename();
assertEquals(Result.LOCK_FAILURE, result);
// Check that the involved refs are the same despite the failure
assertExists(false, toName);
if (!toLock.equals(toName))
assertExists(false, toName + LOCK_SUFFIX);
assertExists(true, toLock + LOCK_SUFFIX);
if (!toLock.equals(fromName))
assertExists(false, "logs/" + fromName + LOCK_SUFFIX);
assertExists(false, "logs/" + toName + LOCK_SUFFIX);
assertEquals(oldHeadId, db.resolve(Constants.HEAD));
assertEquals(oldfromId, db.resolve(fromName));
assertNull(db.resolve(toName));
assertEquals(oldFromLog.toString(), refDb.getReflogReader(fromName)
.getReverseEntries().toString());
if (oldHeadId != null && oldHeadLog != null)
assertEquals(oldHeadLog.toString(), refDb.getReflogReader(
Constants.HEAD).getReverseEntries().toString());
} finally {
lockFile.unlock();
}
}
private void assertExists(boolean positive, String toName) {
assertEquals(toName + (positive ? " " : " does not ") + "exist",
positive, new File(db.getDirectory(), toName).exists());
}
@Test
public void testRenameBranchCannotLockAFileHEADisFromLockHEAD()
throws IOException {
tryRenameWhenLocked("HEAD", "refs/heads/b", "refs/heads/new/name",
"refs/heads/b");
}
@Test
public void testRenameBranchCannotLockAFileHEADisFromLockFrom()
throws IOException {
tryRenameWhenLocked("refs/heads/b", "refs/heads/b",
"refs/heads/new/name", "refs/heads/b");
}
@Test
public void testRenameBranchCannotLockAFileHEADisFromLockTo()
throws IOException {
tryRenameWhenLocked("refs/heads/new/name", "refs/heads/b",
"refs/heads/new/name", "refs/heads/b");
}
@Test
public void testRenameBranchCannotLockAFileHEADisToLockFrom()
throws IOException {
tryRenameWhenLocked("refs/heads/b", "refs/heads/b",
"refs/heads/new/name", "refs/heads/new/name");
}
@Test
public void testRenameBranchCannotLockAFileHEADisToLockTo()
throws IOException {
tryRenameWhenLocked("refs/heads/new/name", "refs/heads/b",
"refs/heads/new/name", "refs/heads/new/name");
}
@Test
public void testRenameBranchCannotLockAFileHEADisOtherLockFrom()
throws IOException {
tryRenameWhenLocked("refs/heads/b", "refs/heads/b",
"refs/heads/new/name", "refs/heads/a");
}
@Test
public void testRenameBranchCannotLockAFileHEADisOtherLockTo()
throws IOException {
tryRenameWhenLocked("refs/heads/new/name", "refs/heads/b",
"refs/heads/new/name", "refs/heads/a");
}
@Test
public void testUpdateChecksOldValue() throws Exception {
ObjectId cur = db.resolve("master");
ObjectId prev = db.resolve("master^");
RefUpdate u1 = db.updateRef("refs/heads/master");
RefUpdate u2 = db.updateRef("refs/heads/master");
u1.setExpectedOldObjectId(cur);
u1.setNewObjectId(prev);
u1.setForceUpdate(true);
u2.setExpectedOldObjectId(cur);
u2.setNewObjectId(prev);
u2.setForceUpdate(true);
assertEquals(FORCED, u1.update());
assertEquals(LOCK_FAILURE, u2.update());
}
@Test
public void testRenameAtomic() throws IOException {
ObjectId prevId = db.resolve("refs/heads/master^");
RefRename rename = db.renameRef("refs/heads/master", "refs/heads/newmaster");
RefUpdate updateRef = db.updateRef("refs/heads/master");
updateRef.setNewObjectId(prevId);
updateRef.setForceUpdate(true);
assertEquals(FORCED, updateRef.update());
assertEquals(RefUpdate.Result.LOCK_FAILURE, rename.rename());
}
@Test
public void testRenameSymref() throws IOException {
db.resolve("HEAD");
RefRename r = db.renameRef("HEAD", "KOPF");
assertEquals(IO_FAILURE, r.rename());
}
@Test
public void testRenameRefNameColission1avoided() throws IOException {
// setup
ObjectId rb = db.resolve("refs/heads/b");
writeSymref(Constants.HEAD, "refs/heads/a");
RefUpdate updateRef = db.updateRef("refs/heads/a");
updateRef.setNewObjectId(rb);
updateRef.setRefLogMessage("Setup", false);
assertEquals(Result.FAST_FORWARD, updateRef.update());
ObjectId oldHead = db.resolve(Constants.HEAD);
assertEquals(oldHead, rb); // assumption for this test
writeReflog(db, rb, "Just a message", "refs/heads/a");
assertTrue("internal check, we have a log", new File(db.getDirectory(),
"logs/refs/heads/a").exists());
// Now this is our test
RefRename renameRef = db.renameRef("refs/heads/a", "refs/heads/a/b");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertNull(db.resolve("refs/heads/a"));
assertEquals(rb, db.resolve("refs/heads/a/b"));
RefDatabase refDb = db.getRefDatabase();
assertEquals(3, refDb.getReflogReader("refs/heads/a/b")
.getReverseEntries().size());
assertEquals("Branch: renamed a to a/b",
refDb.getReflogReader("refs/heads/a/b").getReverseEntries()
.get(0).getComment());
assertEquals("Just a message", refDb.getReflogReader("refs/heads/a/b")
.getReverseEntries().get(1).getComment());
assertEquals("Setup", refDb.getReflogReader("refs/heads/a/b")
.getReverseEntries().get(2).getComment());
// same thing was logged to HEAD
assertEquals("Branch: renamed a to a/b", refDb.getReflogReader("HEAD")
.getReverseEntries().get(0).getComment());
}
@Test
public void testRenameRefNameColission2avoided() throws IOException {
// setup
ObjectId rb = db.resolve("refs/heads/b");
writeSymref(Constants.HEAD, "refs/heads/prefix/a");
RefUpdate updateRef = db.updateRef("refs/heads/prefix/a");
updateRef.setNewObjectId(rb);
updateRef.setRefLogMessage("Setup", false);
updateRef.setForceUpdate(true);
assertEquals(Result.FORCED, updateRef.update());
ObjectId oldHead = db.resolve(Constants.HEAD);
assertEquals(oldHead, rb); // assumption for this test
writeReflog(db, rb, "Just a message", "refs/heads/prefix/a");
assertTrue("internal check, we have a log", new File(db.getDirectory(),
"logs/refs/heads/prefix/a").exists());
// Now this is our test
RefRename renameRef = db.renameRef("refs/heads/prefix/a",
"refs/heads/prefix");
Result result = renameRef.rename();
assertEquals(Result.RENAMED, result);
assertNull(db.resolve("refs/heads/prefix/a"));
assertEquals(rb, db.resolve("refs/heads/prefix"));
RefDatabase refDb = db.getRefDatabase();
assertEquals(3, refDb.getReflogReader("refs/heads/prefix")
.getReverseEntries().size());
assertEquals("Branch: renamed prefix/a to prefix",
refDb.getReflogReader("refs/heads/prefix").getReverseEntries()
.get(0).getComment());
assertEquals("Just a message",
refDb.getReflogReader("refs/heads/prefix").getReverseEntries()
.get(1).getComment());
assertEquals("Setup", refDb.getReflogReader("refs/heads/prefix")
.getReverseEntries().get(2).getComment());
assertEquals("Branch: renamed prefix/a to prefix",
refDb.getReflogReader("HEAD").getReverseEntries().get(0)
.getComment());
}
@Test
public void testCreateMissingObject() throws IOException {
String name = "refs/heads/abc";
ObjectId bad =
ObjectId.fromString("deadbeefdeadbeefdeadbeefdeadbeefdeadbeef");
RefUpdate ru = db.updateRef(name);
ru.setNewObjectId(bad);
Result update = ru.update();
assertEquals(Result.REJECTED_MISSING_OBJECT, update);
Ref ref = db.exactRef(name);
assertNull(ref);
}
@Test
public void testUpdateMissingObject() throws IOException {
String name = "refs/heads/abc";
RefUpdate ru = updateRef(name);
Result update = ru.update();
assertEquals(Result.NEW, update);
ObjectId oldId = ru.getNewObjectId();
ObjectId bad =
ObjectId.fromString("deadbeefdeadbeefdeadbeefdeadbeefdeadbeef");
ru = db.updateRef(name);
ru.setNewObjectId(bad);
update = ru.update();
assertEquals(Result.REJECTED_MISSING_OBJECT, update);
Ref ref = db.exactRef(name);
assertNotNull(ref);
assertEquals(oldId, ref.getObjectId());
}
@Test
public void testForceUpdateMissingObject() throws IOException {
String name = "refs/heads/abc";
RefUpdate ru = updateRef(name);
Result update = ru.update();
assertEquals(Result.NEW, update);
ObjectId oldId = ru.getNewObjectId();
ObjectId bad =
ObjectId.fromString("deadbeefdeadbeefdeadbeefdeadbeefdeadbeef");
ru = db.updateRef(name);
ru.setNewObjectId(bad);
update = ru.forceUpdate();
assertEquals(Result.REJECTED_MISSING_OBJECT, update);
Ref ref = db.exactRef(name);
assertNotNull(ref);
assertEquals(oldId, ref.getObjectId());
}
private static void writeReflog(Repository db, ObjectId newId, String msg,
String refName) throws IOException {
RefDirectory refs = (RefDirectory) db.getRefDatabase();
RefDirectoryUpdate update = refs.newUpdate(refName, true);
update.setNewObjectId(newId);
refs.log(false, update, msg, true);
}
private static class SubclassedId extends ObjectId {
SubclassedId(AnyObjectId src) {
super(src);
}
}
}
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