Add ParentsCount property to Commit

Author: tclem

LibGit2Sharp.Tests/CommitFixture.cs

@@ -164,6 +164,15 @@ public void CanEnumerateCommitsWithReverseTopoSorting()
             }
         }
 
+        [Test]
+        public void CanGetParentsCount()
+        {
+            using (var repo = new Repository(BareTestRepoPath))
+            {
+                repo.Commits.First().ParentsCount.ShouldEqual(1);
+            }
+        }
+
         [Test]
         public void CanEnumerateCommitsWithTimeSorting()
         {
@@ -378,7 +387,7 @@ public void CanReadCommitData()
 
                 commit.Tree.Sha.ShouldEqual("181037049a54a1eb5fab404658a3a250b44335d7");
 
-                commit.Parents.Count().ShouldEqual(0);
+                commit.ParentsCount.ShouldEqual(0);
             }
         }
 
@@ -389,6 +398,7 @@ public void CanReadCommitWithMultipleParents()
             {
                 var commit = repo.Lookup<Commit>("a4a7dce85cf63874e984719f4fdd239f5145052f");
                 commit.Parents.Count().ShouldEqual(2);
+                commit.ParentsCount.ShouldEqual(2);
             }
         }
 
@@ -493,7 +503,7 @@ public void CanCommitALittleBit()
                 AssertBlobContent(repo.Head[relativeFilepath], "nulltoken\n");
                 AssertBlobContent(commit[relativeFilepath], "nulltoken\n");
 
-                commit.Parents.Count().ShouldEqual(0);
+                commit.ParentsCount.ShouldEqual(0);
                 repo.Info.IsEmpty.ShouldBeFalse();
 
                 File.WriteAllText(filePath, "nulltoken commits!\n");
@@ -505,7 +515,7 @@ public void CanCommitALittleBit()
                 AssertBlobContent(repo.Head[relativeFilepath], "nulltoken commits!\n");
                 AssertBlobContent(commit2[relativeFilepath], "nulltoken commits!\n");
 
-                commit2.Parents.Count().ShouldEqual(1);
+                commit2.ParentsCount.ShouldEqual(1);
                 commit2.Parents.First().Id.ShouldEqual(commit.Id);
 
                 Branch firstCommitBranch = repo.CreateBranch("davidfowl-rules", commit.Id.Sha); //TODO: This cries for a shortcut method :-/
@@ -521,7 +531,7 @@ public void CanCommitALittleBit()
                 AssertBlobContent(repo.Head[relativeFilepath], "davidfowl commits!\n");
                 AssertBlobContent(commit3[relativeFilepath], "davidfowl commits!\n");
 
-                commit3.Parents.Count().ShouldEqual(1);
+                commit3.ParentsCount.ShouldEqual(1);
                 commit3.Parents.First().Id.ShouldEqual(commit.Id);
 
                 AssertBlobContent(firstCommitBranch[relativeFilepath], "nulltoken\n");
@@ -580,7 +590,7 @@ public void CanAmendARootCommit()
                 repo.Head.Commits.Count().ShouldEqual(1);
 
                 Commit originalCommit = repo.Head.Tip;
-                originalCommit.Parents.Count().ShouldEqual(0);
+                originalCommit.ParentsCount.ShouldEqual(0);
 
                 CreateAndStageANewFile(repo);
 
@@ -600,7 +610,7 @@ public void CanAmendACommitWithMoreThanOneParent()
             {
                 var mergedCommit = repo.Lookup<Commit>("be3563a");
                 mergedCommit.ShouldNotBeNull();
-                mergedCommit.Parents.Count().ShouldEqual(2);
+                mergedCommit.ParentsCount.ShouldEqual(2);
 
                 repo.Reset(ResetOptions.Soft, mergedCommit.Sha);
 

LibGit2Sharp/Commit.cs

@@ -89,6 +89,20 @@ public IEnumerable<Commit> Parents
             get { return parents.Value; }
         }
 
+        /// <summary>
+        ///   Gets The count of parent commits.
+        /// </summary>
+        public uint ParentsCount
+        {
+            get
+            {
+                using (var obj = new ObjectSafeWrapper(Id, repo))
+                {
+                    return NativeMethods.git_commit_parentcount(obj.ObjectPtr);
+                }
+            }
+        }
+
         private IEnumerable<Commit> RetrieveParentsOfCommit(ObjectId oid)
         {
             using (var obj = new ObjectSafeWrapper(oid, repo))