Add tests for RepositoryFactory

tests/Tgstation.Server.Host.Tests/Components/Repository/TestRepositoryFactory.cs

@@ -0,0 +1,91 @@
+using LibGit2Sharp;
+using Microsoft.Extensions.Logging;
+using Microsoft.VisualStudio.TestTools.UnitTesting;
+using Moq;
+using System;
+using System.IO;
+using System.Threading.Tasks;
+
+namespace Tgstation.Server.Host.Components.Repository.Tests
+{
+	/// <summary>
+	/// Tests for <see cref="RepositoryFactory"/>.
+	/// </summary>
+	[TestClass]
+	public sealed class TestRepositoryFactory
+	{
+		static IRepositoryFactory CreateFactory() => new RepositoryFactory(Mock.Of<ILogger<RepositoryFactory>>());
+
+		static Task<LibGit2Sharp.IRepository> TestRepoLoading(
+			string path,
+			IRepositoryFactory repositoryFactory = null) =>
+			(repositoryFactory ?? CreateFactory())
+			.CreateFromPath(path, default);
+
+		[TestMethod]
+		public void TestConstructionThrows() => Assert.ThrowsException<ArgumentNullException>(() => new RepositoryFactory(null));
+
+		[TestMethod]
+		public void TestInMemoryRepoCreation()
+		{
+			using var repo = new RepositoryFactory(Mock.Of<ILogger<RepositoryFactory>>()).CreateInMemory();
+		}
+
+		[TestMethod]
+		public async Task TestLoadedRepoCreation()
+		{
+			using var repo = await TestRepoLoading(Path.GetFullPath("../../../../.."));
+
+			// Checking the commit previous to the one that creates this function exists
+			var gitObject = repo.Lookup("4802806bdccee27cb3d5fa8c2d0dfbdc117fdb4d");
+			Assert.IsNotNull(gitObject);
+			var commit = gitObject.Peel<Commit>();
+
+			Assert.AreEqual("Cleanup repository management code", commit.Message.Trim());
+		}
+
+		[TestMethod]
+		public async Task TestCloning()
+		{
+			var tempDir = Path.GetTempFileName();
+			File.Delete(tempDir);
+			try
+			{
+				var factory = CreateFactory();
+				await factory.Clone(
+					new Uri("https://github.com/Cyberboss/Test"),
+					new CloneOptions
+					{
+						CredentialsProvider = factory.GenerateCredentialsHandler(null, null)
+					},
+					tempDir,
+					default);
+
+				using (var repo = await TestRepoLoading(tempDir))
+				{
+					var gitObject = repo.Lookup("f636418bf47d238d33b0e4a34f0072b23a8aad0e");
+					Assert.IsNotNull(gitObject);
+					var commit = gitObject.Peel<Commit>();
+
+					Assert.AreEqual("Update Test.md", commit.Message);
+				}
+			}
+			finally
+			{
+				// Takes a while to release the repo handle sometimes...
+				for (var i = 0; i < 5; ++i)
+				{
+					try
+					{
+						Directory.Delete(tempDir, true);
+						break;
+					}
+					catch (UnauthorizedAccessException)
+					{
+						await Task.Delay(TimeSpan.FromSeconds(3)).ConfigureAwait(false);
+					}
+				}
+			}
+		}
+	}
+}