[Libgit2] Diff issues?

diff.tests.cs

using System.IO;
using System.Linq;
using System.Text;
using LibGit2Sharp.Tests.TestHelpers;
using Xunit;

namespace LibGit2Sharp.Tests
{
    public class DiffTreeToTargetFixture : BaseFixture
    {
        private void SetUpSimpleDiffContext(Repository repo)
        {
            var fullpath = Path.Combine(repo.Info.WorkingDirectory, "file.txt");
            File.WriteAllText(fullpath, "hello\n");

            repo.Index.Stage(fullpath);
            repo.Commit("Initial commit", DummySignature, DummySignature);

            File.AppendAllText(fullpath, "world\n");

            repo.Index.Stage(fullpath);

            File.AppendAllText(fullpath, "!!!\n");
        }

        [Fact]
        /*
         * $ git diff
         * diff --git a/file.txt b/file.txt
         * index 94954ab..4f125e3 100644
         * --- a/file.txt
         * +++ b/file.txt
         * @@ -1,2 +1,3 @@
         *  hello
         *  world
         * +!!!
         */
        public void CanCompareASimpleTreeAgainstTheWorkDirAndTheIndex()
        {
            var scd = BuildSelfCleaningDirectory();

            using (var repo = Repository.Init(scd.RootedDirectoryPath))
            {
                SetUpSimpleDiffContext(repo);

                TreeChanges changes = repo.Diff.Compare(repo.Head.Tip.Tree, DiffTarget.BothWorkingDirectoryAndIndex);

                var expected = new StringBuilder()
                    .Append("diff --git a/file.txt b/file.txt\n")
                    .Append("index 94954ab..4f125e3 100644\n")
                    .Append("--- a/file.txt\n")
                    .Append("+++ b/file.txt\n")
                    .Append("@@ -1,2 +1,3 @@\n")
                    .Append(" hello\n")
                    .Append(" world\n")
                    .Append("+!!!\n");

                Assert.Equal(expected.ToString(), changes.Patch);
            }
        }

        [Fact]
        /*
         * No direct git equivalent but should output
         * 
         * diff --git a/file.txt b/file.txt
         * index ce01362..4f125e3 100644
         * --- a/file.txt
         * +++ b/file.txt
         * @@ -1 +1,3 @@
         *  hello
         * +world
         * +!!!
         */
        public void CanCompareASimpleTreeAgainstTheWorkDir()
        {
            var scd = BuildSelfCleaningDirectory();

            using (var repo = Repository.Init(scd.RootedDirectoryPath))
            {
                SetUpSimpleDiffContext(repo);

                TreeChanges changes = repo.Diff.Compare(repo.Head.Tip.Tree, DiffTarget.WorkingDirectory);

                var expected = new StringBuilder()
                    .Append("diff --git a/file.txt b/file.txt\n")
                    .Append("index ce01362..4f125e3 100644\n")
                    .Append("--- a/file.txt\n")
                    .Append("+++ b/file.txt\n")
                    .Append("@@ -1 +1,3 @@\n")
                    .Append(" hello\n")
                    .Append("+world\n")
                    .Append("+!!!\n");

                Assert.Equal(expected.ToString(), changes.Patch);
            }
        }

        [Fact]
        /*
         * $ git diff --cached
         * diff --git a/file.txt b/file.txt
         * index ce01362..94954ab 100644
         * --- a/file.txt
         * +++ b/file.txt
         * @@ -1 +1,2 @@
         *  hello
         * +world
         */
        public void CanCompareASimpleTreeAgainstTheIndex()
        {
            var scd = BuildSelfCleaningDirectory();

            using (var repo = Repository.Init(scd.RootedDirectoryPath))
            {
                SetUpSimpleDiffContext(repo);

                TreeChanges changes = repo.Diff.Compare(repo.Head.Tip.Tree, DiffTarget.Index);

                var expected = new StringBuilder()
                    .Append("diff --git a/file.txt b/file.txt\n")
                    .Append("index ce01362..94954ab 100644\n")
                    .Append("--- a/file.txt\n")
                    .Append("+++ b/file.txt\n")
                    .Append("@@ -1 +1,2 @@\n")
                    .Append(" hello\n")
                    .Append("+world\n");

                Assert.Equal(expected.ToString(), changes.Patch);
            }
        }

        /*
         * $ git diff --cached
         * diff --git a/deleted_staged_file.txt b/deleted_staged_file.txt
         * deleted file mode 100644
         * index 5605472..0000000
         * --- a/deleted_staged_file.txt
         * +++ /dev/null
         * @@ -1 +0,0 @@
         * -things
         * diff --git a/modified_staged_file.txt b/modified_staged_file.txt
         * index 15d2ecc..e68bcc7 100644
         * --- a/modified_staged_file.txt
         * +++ b/modified_staged_file.txt
         * @@ -1 +1,2 @@
         * +a change
         *  more files!
         * diff --git a/new_tracked_file.txt b/new_tracked_file.txt
         * new file mode 100644
         * index 0000000..935a81d
         * --- /dev/null
         * +++ b/new_tracked_file.txt
         * @@ -0,0 +1 @@
         * +a new file
         */
        [Fact]
        public void CanCompareAMoreComplexTreeAgainstTheIndex()
        {
            using (var repo = new Repository(StandardTestRepoPath))
            {
                Tree tree = repo.Head.Tip.Tree;

                TreeChanges changes = repo.Diff.Compare(tree, DiffTarget.Index);
                Assert.NotNull(changes);

                Assert.Equal(3, changes.Count());
                Assert.Equal("deleted_staged_file.txt", changes.Deleted.Single().Path);
                Assert.Equal("new_tracked_file.txt", changes.Added.Single().Path);
                Assert.Equal("modified_staged_file.txt", changes.Modified.Single().Path);
            }
        }

        /*

Below the output of the test run

------ Test started: Assembly: LibGit2Sharp.Tests.dll ------

Test 'LibGit2Sharp.Tests.DiffTreeToTargetFixture.CanCompareASimpleTreeAgainstTheWorkDirAndTheIndex' failed: Assert.Equal() Failure
Position: First difference is at position 39
Expected: diff --git a/file.txt b/file.txt
index 94954ab..4f125e3 100644
--- a/file.txt
+++ b/file.txt
@@ -1,2 +1,3 @@
 hello
 world
+!!!

Actual:   diff --git a/file.txt b/file.txt
index ce01362..4f125e3 100644
--- a/file.txt
+++ b/file.txt
@@ -1 +1,3 @@
 hello
+world
+!!!

	DiffTreeToTargetFixture.cs(58,0): at LibGit2Sharp.Tests.DiffTreeToTargetFixture.CanCompareASimpleTreeAgainstTheWorkDirAndTheIndex()

3 passed, 1 failed, 0 skipped, took 5,59 seconds (xUnit.net 1.9.0 build 1566).

         */
    }
}