@Test
public void testPathsReset() throws Exception {
setupRepository();
DirCacheEntry preReset =
DirCache.read(db.getIndexFile(), db.getFS()).getEntry(indexFile.getName());
assertNotNull(preReset);
git.add().addFilepattern(untrackedFile.getName()).call();
// 'a.txt' has already been modified in setupRepository
// 'notAddedToIndex.txt' has been added to repository
git.reset().addPath(indexFile.getName()).addPath(untrackedFile.getName()).call();
DirCacheEntry postReset =
DirCache.read(db.getIndexFile(), db.getFS()).getEntry(indexFile.getName());
assertNotNull(postReset);
Assert.assertNotSame(preReset.getObjectId(), postReset.getObjectId());
Assert.assertEquals(prestage.getObjectId(), postReset.getObjectId());
// check that HEAD hasn't moved
ObjectId head = db.resolve(Constants.HEAD);
assertEquals(secondCommit, head);
// check if files still exist
assertTrue(untrackedFile.exists());
assertTrue(indexFile.exists());
assertTrue(inHead(indexFile.getName()));
assertTrue(inIndex(indexFile.getName()));
assertFalse(inIndex(untrackedFile.getName()));
}
@Test
public void testReadIndex_DirCacheTree() throws Exception {
final Map<String, CGitIndexRecord> cList = readLsFiles();
final Map<String, CGitLsTreeRecord> cTree = readLsTree();
final DirCache dc = new DirCache(index, FS.DETECTED);
assertEquals(0, dc.getEntryCount());
dc.read();
assertEquals(cList.size(), dc.getEntryCount());
final DirCacheTree jTree = dc.getCacheTree(false);
assertNotNull(jTree);
assertEquals("", jTree.getNameString());
assertEquals("", jTree.getPathString());
assertTrue(jTree.isValid());
assertEquals(
ObjectId.fromString("698dd0b8d0c299f080559a1cffc7fe029479a408"), jTree.getObjectId());
assertEquals(cList.size(), jTree.getEntrySpan());
final ArrayList<CGitLsTreeRecord> subtrees = new ArrayList<CGitLsTreeRecord>();
for (final CGitLsTreeRecord r : cTree.values()) {
if (FileMode.TREE.equals(r.mode)) subtrees.add(r);
}
assertEquals(subtrees.size(), jTree.getChildCount());
for (int i = 0; i < jTree.getChildCount(); i++) {
final DirCacheTree sj = jTree.getChild(i);
final CGitLsTreeRecord sc = subtrees.get(i);
assertEquals(sc.path, sj.getNameString());
assertEquals(sc.path + "/", sj.getPathString());
assertTrue(sj.isValid());
assertEquals(sc.id, sj.getObjectId());
}
}
@Test
public void testUnsupportedOptionalExtension() throws Exception {
final DirCache dc = new DirCache(pathOf("gitgit.index.ZZZZ"), FS.DETECTED);
dc.read();
assertEquals(1, dc.getEntryCount());
assertEquals("A", dc.getEntry(0).getPathString());
}
@Test
public void testReadMissing_TempIndex() throws Exception {
final File idx = new File(db.getDirectory(), "tmp_index");
assertFalse(idx.exists());
final DirCache dc = DirCache.read(idx, db.getFS());
assertNotNull(dc);
assertEquals(0, dc.getEntryCount());
}
@Test
public void testCorruptChecksumAtFooter() throws Exception {
final DirCache dc = new DirCache(pathOf("gitgit.index.badchecksum"), FS.DETECTED);
try {
dc.read();
fail("Cache loaded despite corrupt checksum");
} catch (CorruptObjectException err) {
assertEquals("DIRC checksum mismatch", err.getMessage());
}
}
@Test
public void testUnsupportedRequiredExtension() throws Exception {
final DirCache dc = new DirCache(pathOf("gitgit.index.aaaa"), FS.DETECTED);
try {
dc.read();
fail("Cache loaded an unsupported extension");
} catch (CorruptObjectException err) {
assertEquals("DIRC extension 'aaaa'" + " not supported by this version.", err.getMessage());
}
}
@Test
public void testReadIndex_LsFiles() throws Exception {
final Map<String, CGitIndexRecord> ls = readLsFiles();
final DirCache dc = new DirCache(index, FS.DETECTED);
assertEquals(0, dc.getEntryCount());
dc.read();
assertEquals(ls.size(), dc.getEntryCount());
{
final Iterator<CGitIndexRecord> rItr = ls.values().iterator();
for (int i = 0; rItr.hasNext(); i++) assertEqual(rItr.next(), dc.getEntry(i));
}
}
@Test
public void testHardResetOnTag() throws Exception {
setupRepository();
String tagName = "initialtag";
git.tag().setName(tagName).setObjectId(secondCommit).setMessage("message").call();
DirCacheEntry preReset =
DirCache.read(db.getIndexFile(), db.getFS()).getEntry(indexFile.getName());
assertNotNull(preReset);
git.add().addFilepattern(untrackedFile.getName()).call();
git.reset().setRef(tagName).setMode(HARD).call();
ObjectId head = db.resolve(Constants.HEAD);
assertEquals(secondCommit, head);
}
public void setupRepository() throws IOException, JGitInternalException, GitAPIException {
// create initial commit
git = new Git(db);
initialCommit = git.commit().setMessage("initial commit").call();
// create nested file
File dir = resolve(db.getWorkTree(), "dir");
FileUtils.mkdir(dir);
File nestedFile = resolve(dir, "b.txt");
FileUtils.createNewFile(nestedFile);
PrintWriter nesterFileWriter = getPrintWriter(nestedFile);
nesterFileWriter.print("content");
nesterFileWriter.flush();
// create file
indexFile = resolve(db.getWorkTree(), "a.txt");
FileUtils.createNewFile(indexFile);
PrintWriter writer = getPrintWriter(indexFile);
writer.print("content");
writer.flush();
// add file and commit it
git.add().addFilepattern("dir").addFilepattern("a.txt").call();
secondCommit = git.commit().setMessage("adding a.txt and dir/b.txt").call();
prestage = DirCache.read(db.getIndexFile(), db.getFS()).getEntry(indexFile.getName());
// modify file and add to index
writer.print("new content");
writer.close();
nesterFileWriter.print("new content");
nesterFileWriter.close();
git.add().addFilepattern("a.txt").addFilepattern("dir").call();
// create a file not added to the index
untrackedFile = resolve(db.getWorkTree(), "notAddedToIndex.txt");
FileUtils.createNewFile(untrackedFile);
PrintWriter writer2 = getPrintWriter(untrackedFile);
writer2.print("content");
writer2.close();
}
/**
* Create a new in-core index representation, lock it, and read from disk.
*
* <p>The new index will be locked and then read before it is returned to the caller. Read
* failures are reported as exceptions and therefore prevent the method from returning a partially
* populated index. On read failure, the lock is released.
*
* @param indexLocation location of the index file on disk.
* @param fs the file system abstraction which will be necessary to perform certain file system
* operations.
* @return a cache representing the contents of the specified index file (if it exists) or an
* empty cache if the file does not exist.
* @throws IOException the index file is present but could not be read, or the lock could not be
* obtained.
* @throws CorruptObjectException the index file is using a format or extension that this library
* does not support.
*/
public static DirCache lock(final File indexLocation, final FS fs)
throws CorruptObjectException, IOException {
final DirCache c = new DirCache(indexLocation, fs);
if (!c.lock()) throw new LockFailedException(indexLocation);
try {
c.read();
} catch (IOException e) {
c.unlock();
throw e;
} catch (RuntimeException e) {
c.unlock();
throw e;
} catch (Error e) {
c.unlock();
throw e;
}
return c;
}
@Test
public void testReadWriteV3() throws Exception {
final File file = pathOf("gitgit.index.v3");
final DirCache dc = new DirCache(file, FS.DETECTED);
dc.read();
assertEquals(10, dc.getEntryCount());
assertV3TreeEntry(0, "dir1/file1.txt", false, false, dc);
assertV3TreeEntry(1, "dir2/file2.txt", true, false, dc);
assertV3TreeEntry(2, "dir3/file3.txt", false, false, dc);
assertV3TreeEntry(3, "dir3/file3a.txt", true, false, dc);
assertV3TreeEntry(4, "dir4/file4.txt", true, false, dc);
assertV3TreeEntry(5, "dir4/file4a.txt", false, false, dc);
assertV3TreeEntry(6, "file.txt", true, false, dc);
assertV3TreeEntry(7, "newdir1/newfile1.txt", false, true, dc);
assertV3TreeEntry(8, "newdir1/newfile2.txt", false, true, dc);
assertV3TreeEntry(9, "newfile.txt", false, true, dc);
final ByteArrayOutputStream bos = new ByteArrayOutputStream();
dc.writeTo(bos);
final byte[] indexBytes = bos.toByteArray();
final byte[] expectedBytes = IO.readFully(file);
assertArrayEquals(expectedBytes, indexBytes);
}
@Test
public void testTreeWalk_LsFiles() throws Exception {
final Repository db = createBareRepository();
final Map<String, CGitIndexRecord> ls = readLsFiles();
final DirCache dc = new DirCache(index, db.getFS());
assertEquals(0, dc.getEntryCount());
dc.read();
assertEquals(ls.size(), dc.getEntryCount());
{
final Iterator<CGitIndexRecord> rItr = ls.values().iterator();
final TreeWalk tw = new TreeWalk(db);
tw.setRecursive(true);
tw.addTree(new DirCacheIterator(dc));
while (rItr.hasNext()) {
final DirCacheIterator dcItr;
assertTrue(tw.next());
dcItr = tw.getTree(0, DirCacheIterator.class);
assertNotNull(dcItr);
assertEqual(rItr.next(), dcItr.getDirCacheEntry());
}
}
}
public int getDirCacheEntryLength(String path) throws IOException {
String repoPath = getRepoRelativePath(path);
DirCache dc = DirCache.read(repository.getIndexFile(), repository.getFS());
return dc.getEntry(repoPath).getLength();
}
public long lastModifiedInIndex(String path) throws IOException {
String repoPath = getRepoRelativePath(path);
DirCache dc = DirCache.read(repository.getIndexFile(), repository.getFS());
return dc.getEntry(repoPath).getLastModified();
}
public boolean inIndex(String path) throws IOException {
String repoPath = getRepoRelativePath(path);
DirCache dc = DirCache.read(repository.getIndexFile(), repository.getFS());
return dc.getEntry(repoPath) != null;
}
private boolean isInIndex(Repository db, String path) throws IOException {
DirCache dc = DirCache.read(db.getIndexFile(), db.getFS());
return dc.getEntry(path) != null;
}
/**
* Create a new in-core index representation and read an index from disk.
*
* <p>The new index will be read before it is returned to the caller. Read failures are reported
* as exceptions and therefore prevent the method from returning a partially populated index.
*
* @param indexLocation location of the index file on disk.
* @param fs the file system abstraction which will be necessary to perform certain file system
* operations.
* @return a cache representing the contents of the specified index file (if it exists) or an
* empty cache if the file does not exist.
* @throws IOException the index file is present but could not be read.
* @throws CorruptObjectException the index file is using a format or extension that this library
* does not support.
*/
public static DirCache read(final File indexLocation, final FS fs)
throws CorruptObjectException, IOException {
final DirCache c = new DirCache(indexLocation, fs);
c.read();
return c;
}
