public async Task ReturnsOkIfPostingCommentSucceeds()
        {
            var serviceMock = new Mock <IPostCommentService>();

            serviceMock.Setup(x => x.PostCommentAsync(It.IsAny <IFormCollection>()))
            .ReturnsAsync(new PostCommentResult(HttpStatusCode.OK));
            var function = new PostCommentToPullRequestFunction(serviceMock.Object);

            var response = await function.Run(Mock.Of <HttpRequest>(), Mock.Of <ILogger>()).ConfigureAwait(false);

            Assert.IsType <OkResult>(response);
        }
        public async Task ReturnsRedirectIfPostingCommentSucceedsWithRedirection()
        {
            var redirectUri = new Uri("http://www.example.com/");
            var serviceMock = new Mock <IPostCommentService>();

            serviceMock.Setup(x => x.PostCommentAsync(It.IsAny <IFormCollection>()))
            .ReturnsAsync(new PostCommentResult(HttpStatusCode.Redirect, redirectUri));
            var function = new PostCommentToPullRequestFunction(serviceMock.Object);

            var response = await function.Run(Mock.Of <HttpRequest>(), Mock.Of <ILogger>()).ConfigureAwait(false);

            Assert.IsType <RedirectResult>(response);
            Assert.Equal(redirectUri.AbsoluteUri, ((RedirectResult)response).Url);
        }
        public async Task LogsAndReturnsBadRequestIfPostingCommentFails(Exception exception)
        {
            var serviceMock = new Mock <IPostCommentService>();

            serviceMock.Setup(x => x.PostCommentAsync(It.IsAny <IFormCollection>()))
            .ReturnsAsync(new PostCommentResult(HttpStatusCode.BadRequest, exception?.Message !, exception !));

            var formMock    = new Mock <IFormCollection>();
            var requestMock = new Mock <HttpRequest>();

            requestMock.Setup(x => x.ReadFormAsync(It.IsAny <CancellationToken>()))
            .ReturnsAsync(formMock.Object);
            var loggerMock = new Mock <ILogger>();
            var function   = new PostCommentToPullRequestFunction(serviceMock.Object);

            var result = await function.Run(requestMock.Object, loggerMock.Object).ConfigureAwait(false);

            Assert.IsType <BadRequestResult>(result);
            loggerMock.Verify(x =>
                              x.Log(LogLevel.Error, 0, It.IsAny <object>(), exception, It.IsAny <Func <object, Exception, string> >()));
        }