public void testSingleSubtree_NoRecursion()
        {
            DirCache dc = DirCache.read(db);

            string[] paths = { "a.", "a/b", "a/c", "a/d", "a0b" };
            var ents = new DirCacheEntry[paths.Length];
            for (int i = 0; i < paths.Length; i++)
            {
                ents[i] = new DirCacheEntry(paths[i]);
                ents[i].setFileMode(FileMode.RegularFile);
            }

            DirCacheBuilder b = dc.builder();
            for (int i = 0; i < ents.Length; i++)
            {
                b.add(ents[i]);
            }
            b.finish();

            string[] expPaths = { "a.", "a", "a0b" };
            FileMode[] expModes = { FileMode.RegularFile, FileMode.Tree, FileMode.RegularFile };
            var expPos = new[] { 0, -1, 4 };

            var iter = new DirCacheIterator(dc);
            var tw = new GitSharp.TreeWalk.TreeWalk(db);
            tw.reset();
            tw.addTree(iter);
            tw.Recursive = false;
            int pathIdx = 0;
            while (tw.next())
            {
                Assert.AreSame(iter, tw.getTree<DirCacheIterator>(0, typeof(DirCacheIterator)));
                Assert.AreEqual(expModes[pathIdx].Bits, tw.getRawMode(0));
                Assert.AreSame(expModes[pathIdx], tw.getFileMode(0));
                Assert.AreEqual(expPaths[pathIdx], tw.getPathString());

                if (expPos[pathIdx] >= 0)
                {
                    Assert.AreEqual(expPos[pathIdx], iter.Pointer);
                    Assert.AreSame(ents[expPos[pathIdx]], iter.getDirCacheEntry());
                }
                else
                {
                    Assert.AreSame(FileMode.Tree, tw.getFileMode(0));
                }

                pathIdx++;
            }
            Assert.AreEqual(expPaths.Length, pathIdx);
        }
        public void testNoSubtree_NoTreeWalk()
        {
            DirCache dc = DirCache.read(db);

            string[] paths = { "a.", "a0b" };
            var ents = new DirCacheEntry[paths.Length];

            for (int i = 0; i < paths.Length; i++)
            {
                ents[i] = new DirCacheEntry(paths[i]);
            }

            DirCacheBuilder b = dc.builder();
            for (int i = 0; i < ents.Length; i++)
            {
                b.add(ents[i]);
            }

            b.finish();

            var iter = new DirCacheIterator(dc);
            int pathIdx = 0;
            for (; !iter.eof(); iter.next(1))
            {
                Assert.AreEqual(pathIdx, iter.Pointer);
                Assert.AreSame(ents[pathIdx], iter.getDirCacheEntry());
                pathIdx++;
            }

            Assert.AreEqual(paths.Length, pathIdx);
        }
        public void testNoSubtree_WithTreeWalk()
        {
            DirCache dc = DirCache.read(db);

            string[] paths = { "a.", "a0b" };
            FileMode[] modes = { FileMode.ExecutableFile, FileMode.GitLink };
            var ents = new DirCacheEntry[paths.Length];
            for (int i = 0; i < paths.Length; i++)
            {
                ents[i] = new DirCacheEntry(paths[i]);
                ents[i].setFileMode(modes[i]);
            }

            DirCacheBuilder b = dc.builder();
            for (int i = 0; i < ents.Length; i++)
            {
                b.add(ents[i]);
            }
            b.finish();

            var iter = new DirCacheIterator(dc);
            var tw = new GitSharp.TreeWalk.TreeWalk(db);
            tw.reset();
            tw.addTree(iter);
            int pathIdx = 0;
            while (tw.next())
            {
                Assert.AreSame(iter, tw.getTree<DirCacheIterator>(0, typeof(DirCacheIterator)));
                Assert.AreEqual(pathIdx, iter.Pointer);
                Assert.AreSame(ents[pathIdx], iter.getDirCacheEntry());
                Assert.AreEqual(paths[pathIdx], tw.getPathString());
                Assert.AreEqual(modes[pathIdx].Bits, tw.getRawMode(0));
                Assert.AreSame(modes[pathIdx], tw.getFileMode(0));
                pathIdx++;
            }
            Assert.AreEqual(paths.Length, pathIdx);
        }