Add AssemblyInfo.GitCommitId property

Closes #196

Author: AArnott

src/NerdBank.GitVersioning.Tests/BuildIntegrationTests.cs

@@ -676,13 +676,15 @@ public async Task PublicRelease_RegEx_SatisfiedByCheckedOutBranch()
     }
 
     [Theory]
-    [InlineData(false, false)]
-    [InlineData(true, false)]
-    [InlineData(false, true)]
-    [InlineData(true, true)]
-    public async Task AssemblyInfo(bool isVB, bool includeNonVersionAttributes)
+    [PairwiseData]
+    public async Task AssemblyInfo(bool isVB, bool includeNonVersionAttributes, bool gitRepo)
     {
         this.WriteVersionFile();
+        if (gitRepo)
+        {
+            this.InitializeSourceControl();
+        }
+
         if (isVB)
         {
             this.MakeItAVBProject();
@@ -738,6 +740,7 @@ public async Task AssemblyInfo(bool isVB, bool includeNonVersionAttributes)
         Assert.Equal(result.AssemblyProduct, thisAssemblyClass.GetField("AssemblyProduct", fieldFlags)?.GetValue(null));
         Assert.Equal(result.AssemblyCompany, thisAssemblyClass.GetField("AssemblyCompany", fieldFlags)?.GetValue(null));
         Assert.Equal(result.AssemblyCopyright, thisAssemblyClass.GetField("AssemblyCopyright", fieldFlags)?.GetValue(null));
+        Assert.Equal(result.GitCommitId, thisAssemblyClass.GetField("GitCommitId", fieldFlags)?.GetValue(null) ?? string.Empty);
 
         // Verify that it doesn't have key fields
         Assert.Null(thisAssemblyClass.GetField("PublicKey", fieldFlags));

src/Nerdbank.GitVersioning.Tasks/AssemblyVersionInfo.cs

@@ -67,6 +67,8 @@ the code is regenerated.
 
         public string AssemblyConfiguration { get; set; }
 
+        public string GitCommitId { get; set; }
+
 #if NET461
         public override bool Execute()
         {
@@ -141,7 +143,8 @@ private CodeTypeDeclaration CreateThisAssemblyClass()
                     { "AssemblyProduct", this.AssemblyProduct },
                     { "AssemblyCopyright", this.AssemblyCopyright },
                     { "AssemblyCompany", this.AssemblyCompany },
-                    { "AssemblyConfiguration", this.AssemblyConfiguration }
+                    { "AssemblyConfiguration", this.AssemblyConfiguration },
+                    { "GitCommitId", this.GitCommitId },
                 }).ToArray());
             if (hasKeyInfo)
             {
@@ -300,7 +303,8 @@ private void GenerateThisAssemblyClass()
                     { "AssemblyProduct", this.AssemblyProduct },
                     { "AssemblyCopyright", this.AssemblyCopyright },
                     { "AssemblyCompany", this.AssemblyCompany },
-                    { "AssemblyConfiguration", this.AssemblyConfiguration }
+                    { "AssemblyConfiguration", this.AssemblyConfiguration },
+                    { "GitCommitId", this.GitCommitId },
                 };
             if (hasKeyInfo)
             {

src/Nerdbank.GitVersioning.Tasks/build/Nerdbank.GitVersioning.targets

@@ -152,6 +152,7 @@
                   AssemblyCopyright="$(AssemblyCopyright)"
                   AssemblyCompany="$(AssemblyCompany)"
                   AssemblyConfiguration="$(Configuration)"
+                  GitCommitId="$(GitCommitId)"
                   EmitNonVersionCustomAttributes="$(NBGV_EmitNonVersionCustomAttributes)"
                   />
     <!-- Avoid applying the newly generated AssemblyVersionInfo.cs file to the build