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

namespace LibGit2Sharp.Tests
{
  public class PatchEntryChangesFixture : BaseFixture
  {
    [Fact]
    public void PatchEntryBasics()
    {
      // Init test repo
      var path = SandboxStandardTestRepoGitDir();
      string file = "numbers.txt";

      // The repo
      using (var repo = new Repository(path))
      {
        Tree rootCommitTree = repo.Lookup<Commit>("f8d44d7").Tree;
        Tree commitTreeWithUpdatedFile = repo.Lookup<Commit>("ec9e401").Tree;

        // Create patch by diffing
        using (var patch = repo.Diff.Compare<Patch>(rootCommitTree, commitTreeWithUpdatedFile))
        {
          PatchEntryChanges entryChanges = patch[file];
          Assert.Equal(2, entryChanges.LinesAdded);
          Assert.Equal(1, entryChanges.LinesDeleted);
          Assert.Equal(187, entryChanges.Patch.Length);
          // Smoke test
          Assert.Equal(Mode.NonExecutableFile, entryChanges.Mode);
          Assert.Equal(new ObjectId("4625a3628cb78970c57e23a2fe2574514ba403c7"), entryChanges.Oid);
          Assert.Equal(ChangeKind.Modified, entryChanges.Status);
          Assert.Equal(file, entryChanges.OldPath);
          Assert.Equal(Mode.NonExecutableFile, entryChanges.OldMode);
          Assert.Equal(new ObjectId("7909961ae96accd75b6813d32e0fc1d6d52ec941"), entryChanges.OldOid);
        }
      }
    }
  }
}