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GitPackTests.cs
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GitPackTests.cs
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using System;
using System.IO;
using System.IO.Compression;
using System.Security.Cryptography;
using Nerdbank.GitVersioning;
using Nerdbank.GitVersioning.ManagedGit;
using Xunit;
namespace ManagedGit
{
public class GitPackTests : IDisposable
{
private readonly string indexFile = Path.GetTempFileName();
private readonly string packFile = Path.GetTempFileName();
public GitPackTests()
{
using (Stream resourceStream = TestUtilities.GetEmbeddedResource(@"ManagedGit\pack-7d6b2c56ffb97eedb92f4e28583c093f7ee4b3d9.idx"))
using (FileStream stream = File.Open(this.indexFile, FileMode.Open))
{
resourceStream.CopyTo(stream);
}
using (Stream resourceStream = TestUtilities.GetEmbeddedResource(@"ManagedGit\pack-7d6b2c56ffb97eedb92f4e28583c093f7ee4b3d9.pack"))
using (FileStream stream = File.Open(this.packFile, FileMode.Open))
{
resourceStream.CopyTo(stream);
}
}
public void Dispose()
{
try
{
File.Delete(this.indexFile);
}
catch (UnauthorizedAccessException)
{
// TBD: Figure out what's keeping a lock on the file. Seems to be unique to Windows.
}
try
{
File.Delete(this.packFile);
}
catch (UnauthorizedAccessException)
{
// TBD: Figure out what's keeping a lock on the file. Seems to be unique to Windows.
}
}
[Fact]
public void GetPackedObject()
{
using (var gitPack = new GitPack(
(sha, objectType) => null,
new Lazy<FileStream>(() => File.OpenRead(this.indexFile)),
() => File.OpenRead(this.packFile),
GitPackNullCache.Instance))
using (Stream commitStream = gitPack.GetObject(12, "commit"))
using (SHA1 sha = SHA1.Create())
{
// This commit is not deltafied. It is stored as a .gz-compressed stream in the pack file.
var zlibStream = Assert.IsType<ZLibStream>(commitStream);
var deflateStream = Assert.IsType<DeflateStream>(zlibStream.BaseStream);
if (IntPtr.Size > 4)
{
var pooledStream = Assert.IsType<MemoryMappedStream>(deflateStream.BaseStream);
}
else
{
var pooledStream = Assert.IsType<FileStream>(deflateStream.BaseStream);
}
Assert.Equal(222, commitStream.Length);
Assert.Equal("/zgldANj+jvgOwlecnOKylZDVQg=", Convert.ToBase64String(sha.ComputeHash(commitStream)));
}
}
[Fact]
public void GetDeltafiedObject()
{
using (var gitPack = new GitPack(
(sha, objectType) => null,
new Lazy<FileStream>(() => File.OpenRead(this.indexFile)),
() => File.OpenRead(this.packFile),
GitPackNullCache.Instance))
using (Stream commitStream = gitPack.GetObject(317, "commit"))
using (SHA1 sha = SHA1.Create())
{
// This commit is not deltafied. It is stored as a .gz-compressed stream in the pack file.
var deltaStream = Assert.IsType<GitPackDeltafiedStream>(commitStream);
var zlibStream = Assert.IsType<ZLibStream>(deltaStream.BaseStream);
var deflateStream = Assert.IsType<DeflateStream>(zlibStream.BaseStream);
if (IntPtr.Size > 4)
{
var pooledStream = Assert.IsType<MemoryMappedStream>(deflateStream.BaseStream);
}
else
{
var directAccessStream = Assert.IsType<FileStream>(deflateStream.BaseStream);
}
Assert.Equal(137, commitStream.Length);
Assert.Equal("lZu/7nGb0n1UuO9SlPluFnSvj4o=", Convert.ToBase64String(sha.ComputeHash(commitStream)));
}
}
[Fact]
public void GetInvalidObject()
{
using (var gitPack = new GitPack(
(sha, objectType) => null,
new Lazy<FileStream>(() => File.OpenRead(this.indexFile)),
() => File.OpenRead(this.packFile),
GitPackNullCache.Instance))
{
Assert.Throws<GitException>(() => gitPack.GetObject(12, "invalid"));
Assert.Throws<IOException>(() => gitPack.GetObject(-1, "commit"));
Assert.Throws<GitException>(() => gitPack.GetObject(1, "commit"));
Assert.Throws<GitException>(() => gitPack.GetObject(2, "commit"));
Assert.Throws<GitException>(() => gitPack.GetObject(int.MaxValue, "commit"));
}
}
[Fact]
public void TryGetObjectTest()
{
using (var gitPack = new GitPack(
(sha, objectType) => null,
new Lazy<FileStream>(() => File.OpenRead(this.indexFile)),
() => File.OpenRead(this.packFile),
GitPackNullCache.Instance))
using (SHA1 sha = SHA1.Create())
{
Assert.True(gitPack.TryGetObject(GitObjectId.Parse("f5b401f40ad83f13030e946c9ea22cb54cb853cd"), "commit", out Stream commitStream));
using (commitStream)
{
// This commit is not deltafied. It is stored as a .gz-compressed stream in the pack file.
var zlibStream = Assert.IsType<ZLibStream>(commitStream);
var deflateStream = Assert.IsType<DeflateStream>(zlibStream.BaseStream);
if (IntPtr.Size > 4)
{
var pooledStream = Assert.IsType<MemoryMappedStream>(deflateStream.BaseStream);
}
else
{
var directAccessStream = Assert.IsType<FileStream>(deflateStream.BaseStream);
}
Assert.Equal(222, commitStream.Length);
Assert.Equal("/zgldANj+jvgOwlecnOKylZDVQg=", Convert.ToBase64String(sha.ComputeHash(commitStream)));
}
}
}
[Fact]
public void TryGetMissingObjectTest()
{
using (var gitPack = new GitPack(
(sha, objectType) => null,
new Lazy<FileStream>(() => File.OpenRead(this.indexFile)),
() => File.OpenRead(this.packFile),
GitPackNullCache.Instance))
{
Assert.False(gitPack.TryGetObject(GitObjectId.Empty, "commit", out Stream commitStream));
}
}
}
}