Add a worktree repository test

Author: chuseman

src/GitVersionCore.Tests/IntegrationTests/WorktreeScenarios.cs

@@ -0,0 +1,35 @@
+using GitTools.Testing;
+using LibGit2Sharp;
+using NUnit.Framework;
+using System.IO;
+using GitVersionCore.Tests.Helpers;
+
+namespace GitVersionCore.Tests.IntegrationTests
+{
+
+    [TestFixture]
+    public class WorktreeScenarios : TestBase
+    {
+
+        [Test]
+        [Category("NoMono")]
+        [Description("LibGit2Sharp fails here when running under Mono")]
+        public void UseWorktreeRepositoryForVersion()
+        {
+            using var fixture = new EmptyRepositoryFixture();
+            var repoDir = new DirectoryInfo(fixture.RepositoryPath);
+            var worktreePath = Path.Combine(repoDir.Parent.FullName, $"{repoDir.Name}-v1");
+
+            fixture.Repository.MakeATaggedCommit("v1.0.0");
+            var branchV1 = fixture.Repository.CreateBranch("support/1.0");
+
+            fixture.Repository.MakeATaggedCommit("v2.0.0");
+            fixture.AssertFullSemver("2.0.0");
+
+            fixture.Repository.Worktrees.Add(branchV1.CanonicalName, "1.0", worktreePath, false);
+            using var worktreeFixture = new LocalRepositoryFixture(new Repository(worktreePath));
+            worktreeFixture.AssertFullSemver("1.0.0");
+        }
+
+    }
+}