Implemented Delete for IssueCommentsClient

Octokit.Tests/Clients/IssueCommentsClientTests.cs

@@ -143,6 +143,32 @@ public class IssueCommentsClientTests
         }
     }
 
+    public class TheDeleteMethod
+    {
+        [Fact]
+        public void DeletesCorrectUrl()
+        {
+            var connection = Substitute.For<IApiConnection>();
+            var client = new IssueCommentsClient(connection);
+
+            client.Delete("fake", "repo", 42);
+
+            connection.Received().Delete(Arg.Is<Uri>(u => u.ToString() == "repos/fake/repo/issues/comments/42"));
+        }
+
+        [Fact]
+        public async Task EnsuresArgumentsNotNullOrEmpty()
+        {
+            var connection = Substitute.For<IApiConnection>();
+            var client = new IssueCommentsClient(connection);
+
+            await AssertEx.Throws<ArgumentNullException>(async () => await client.Delete(null, "name", 42));
+            await AssertEx.Throws<ArgumentException>(async () => await client.Delete("", "name", 42));
+            await AssertEx.Throws<ArgumentNullException>(async () => await client.Delete("owner", null, 42));
+            await AssertEx.Throws<ArgumentException>(async () => await client.Delete("owner", "", 42));
+        }
+    }
+
     public class TheCtor
     {
         [Fact]

Octokit/Clients/IIssueCommentsClient.cs

@@ -64,5 +64,15 @@ namespace Octokit
         /// <param name="commentUpdate">The modified comment</param>
         /// <returns></returns>
         Task<IssueComment> Update(string owner, string name, int number, string commentUpdate);
+
+        /// <summary>
+        /// Deletes the specified Issue Comment
+        /// </summary>
+        /// <remarks>http://developer.github.com/v3/issues/comments/#delete-a-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment number</param>
+        /// <returns></returns>
+        Task Delete(string owner, string name, int number);
     }
 }

Octokit/Clients/IssueCommentsClient.cs

@@ -102,5 +102,21 @@ namespace Octokit
 
             return ApiConnection.Patch<IssueComment>(ApiUrls.IssueComment(owner, name, number), new BodyWrapper(commentUpdate));
         }
+
+        /// <summary>
+        /// Deletes the specified Issue Comment
+        /// </summary>
+        /// <remarks>http://developer.github.com/v3/issues/comments/#delete-a-comment</remarks>
+        /// <param name="owner">The owner of the repository</param>
+        /// <param name="name">The name of the repository</param>
+        /// <param name="number">The comment number</param>
+        /// <returns></returns>
+        public Task Delete(string owner, string name, int number)
+        {
+            Ensure.ArgumentNotNullOrEmptyString(owner, "owner");
+            Ensure.ArgumentNotNullOrEmptyString(name, "name");
+
+            return ApiConnection.Delete(ApiUrls.IssueComment(owner, name, number));
+        }
     }
 }