public async Task PostsToCorrectUrlWithRepositoryId()
        {
            var newComment = new NewCommitComment("body");

            var connection = Substitute.For<IApiConnection>();
            var client = new RepositoryCommentsClient(connection);

            await client.Create(1, "sha", newComment);

            connection.Received().Post<CommitComment>(Arg.Is<Uri>(u => u.ToString() == "repositories/1/commits/sha/comments"), Arg.Any<object>());
        }
        public async Task EnsuresNonNullArguments()
        {
            var connection = Substitute.For<IApiConnection>();
            var client = new RepositoryCommentsClient(connection);

            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create(null, "name", "sha", new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create("owner", null, "sha", new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create("owner", "name", null, new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create("owner", "name", "sha", null));

            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create(1, null, new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentNullException>(() => client.Create(1, "sha", null));

            await Assert.ThrowsAsync<ArgumentException>(() => client.Create("", "name", "sha", new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentException>(() => client.Create("owner", "", "sha", new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentException>(() => client.Create("owner", "name", "", new NewCommitComment("body")));
            await Assert.ThrowsAsync<ArgumentException>(() => client.Create(1, "", new NewCommitComment("body")));
        }
        public void PostsToCorrectUrl()
        {
            NewCommitComment newComment = new NewCommitComment("body");
            
            var connection = Substitute.For<IApiConnection>();
            var client = new RepositoryCommentsClient(connection);

            client.Create("fake", "repo", "sha", newComment);

            connection.Received().Post<CommitComment>(Arg.Is<Uri>(u => u.ToString() == "repos/fake/repo/commits/sha/comments"), Arg.Any<object>());
        }