/*
* Copyright (C) 2008, 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
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package org.eclipse.jgit.treewalk;
import java.io.File;
import java.security.MessageDigest;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ObjectReader;
import org.eclipse.jgit.lib.RepositoryTestCase;
import org.eclipse.jgit.util.RawParseUtils;
public class FileTreeIteratorTest extends RepositoryTestCase {
private final String[] paths = { "a,", "a,b", "a/b", "a0b" };
private long[] mtime;
public void setUp() throws Exception {
super.setUp();
// We build the entries backwards so that on POSIX systems we
// are likely to get the entries in the trash directory in the
// opposite order of what they should be in for the iteration.
// This should stress the sorting code better than doing it in
// the correct order.
//
mtime = new long[paths.length];
for (int i = paths.length - 1; i >= 0; i--) {
final String s = paths[i];
writeTrashFile(s, s);
mtime[i] = new File(trash, s).lastModified();
}
}
public void testEmptyIfRootIsFile() throws Exception {
final File r = new File(trash, paths[0]);
assertTrue(r.isFile());
final FileTreeIterator fti = new FileTreeIterator(r, db.getFS());
assertTrue(fti.first());
assertTrue(fti.eof());
}
public void testEmptyIfRootDoesNotExist() throws Exception {
final File r = new File(trash, "not-existing-file");
assertFalse(r.exists());
final FileTreeIterator fti = new FileTreeIterator(r, db.getFS());
assertTrue(fti.first());
assertTrue(fti.eof());
}
public void testEmptyIfRootIsEmpty() throws Exception {
final File r = new File(trash, "not-existing-file");
assertFalse(r.exists());
r.mkdir();
assertTrue(r.isDirectory());
final FileTreeIterator fti = new FileTreeIterator(r, db.getFS());
assertTrue(fti.first());
assertTrue(fti.eof());
}
public void testSimpleIterate() throws Exception {
final FileTreeIterator top = new FileTreeIterator(trash, db.getFS());
assertTrue(top.first());
assertFalse(top.eof());
assertEquals(FileMode.REGULAR_FILE.getBits(), top.mode);
assertEquals(paths[0], nameOf(top));
assertEquals(paths[0].length(), top.getEntryLength());
assertEquals(mtime[0], top.getEntryLastModified());
top.next(1);
assertFalse(top.first());
assertFalse(top.eof());
assertEquals(FileMode.REGULAR_FILE.getBits(), top.mode);
assertEquals(paths[1], nameOf(top));
assertEquals(paths[1].length(), top.getEntryLength());
assertEquals(mtime[1], top.getEntryLastModified());
top.next(1);
assertFalse(top.first());
assertFalse(top.eof());
assertEquals(FileMode.TREE.getBits(), top.mode);
final ObjectReader reader = db.newObjectReader();
final AbstractTreeIterator sub = top.createSubtreeIterator(reader);
assertTrue(sub instanceof FileTreeIterator);
final FileTreeIterator subfti = (FileTreeIterator) sub;
assertTrue(sub.first());
assertFalse(sub.eof());
assertEquals(paths[2], nameOf(sub));
assertEquals(paths[2].length(), subfti.getEntryLength());
assertEquals(mtime[2], subfti.getEntryLastModified());
sub.next(1);
assertTrue(sub.eof());
top.next(1);
assertFalse(top.first());
assertFalse(top.eof());
assertEquals(FileMode.REGULAR_FILE.getBits(), top.mode);
assertEquals(paths[3], nameOf(top));
assertEquals(paths[3].length(), top.getEntryLength());
assertEquals(mtime[3], top.getEntryLastModified());
top.next(1);
assertTrue(top.eof());
}
public void testComputeFileObjectId() throws Exception {
final FileTreeIterator top = new FileTreeIterator(trash, db.getFS());
final MessageDigest md = Constants.newMessageDigest();
md.update(Constants.encodeASCII(Constants.TYPE_BLOB));
md.update((byte) ' ');
md.update(Constants.encodeASCII(paths[0].length()));
md.update((byte) 0);
md.update(Constants.encode(paths[0]));
final ObjectId expect = ObjectId.fromRaw(md.digest());
assertEquals(expect, top.getEntryObjectId());
// Verify it was cached by removing the file and getting it again.
//
new File(trash, paths[0]).delete();
assertEquals(expect, top.getEntryObjectId());
}
private static String nameOf(final AbstractTreeIterator i) {
return RawParseUtils.decode(Constants.CHARSET, i.path, 0, i.pathLen);
}
}