Add test that the right error message is shown for shallow repositories

Author: kimsey0

src/GitVersion.Core.Tests/Core/GitVersionExecutorTests.cs

@@ -544,6 +544,27 @@ public void CalculateVersionVariables_TwoBranchHasSameCommitHeadDetachedAndTagge
         version.Sha.ShouldBe(commits.First().Sha);
     }
 
+    [Test]
+    public void CalculateVersionVariables_ShallowFetch_ThrowException()
+    {
+        // Setup
+        using var fixture = new RemoteRepositoryFixture();
+        fixture.LocalRepositoryFixture.MakeShallow();
+
+        using var worktreeFixture = new LocalRepositoryFixture(new Repository(fixture.LocalRepositoryFixture.RepositoryPath));
+        var gitVersionOptions = new GitVersionOptions { WorkingDirectory = worktreeFixture.RepositoryPath };
+
+        var environment = new TestEnvironment();
+        environment.SetEnvironmentVariable(AzurePipelines.EnvironmentVariableName, "true");
+
+        this.sp = GetServiceProvider(gitVersionOptions, environment: environment);
+        var sut = sp.GetRequiredService<IGitVersionCalculateTool>();
+
+        // Execute & Verify
+        var exception = Assert.Throws<WarningException>(() => sut.CalculateVersionVariables());
+        exception?.Message.ShouldBe("Repository is a shallow clone. Git repositories must contain the full history. See https://gitversion.net/docs/reference/requirements#unshallow for more info.");
+    }
+
     private IGitVersionCalculateTool GetGitVersionCalculator(GitVersionOptions gitVersionOptions, ILog? logger = null, IGitRepository? repository = null, IFileSystem? fs = null)
     {
         this.sp = GetServiceProvider(gitVersionOptions, logger, repository, fs);

src/GitVersion.Testing/Fixtures/RepositoryFixtureBase.cs

@@ -127,6 +127,15 @@ public LocalRepositoryFixture CloneRepository()
         return new LocalRepositoryFixture(new Repository(localPath));
     }
 
+    /// <summary>
+    ///     Pulls with a depth of 1 and prunes all older commits, making the repository shallow.
+    /// </summary>
+    public void MakeShallow()
+    {
+        GitTestExtensions.ExecuteGitCmd($"-C {RepositoryPath} pull --depth 1");
+        GitTestExtensions.ExecuteGitCmd($"-C {RepositoryPath} gc --prune=all");
+    }
+
     public void Fetch(string remote, FetchOptions? options = null)
         => Commands.Fetch(Repository, remote, Array.Empty<string>(), options, null);
 }