public void TestGetPostStatistics() { List <Post> posts = new List <Post>(); posts.Add(post); mockPostService.Setup(x => x.GetAllPostStatistics(It.IsAny <StatisticsFilter>())).Returns(posts); var _postController = new PostController(mockPostService.Object); IActionResult getPostStatisticst = _postController.GetPostStatistics(statisticsFilter); var type = getPostStatisticst.GetType(); Assert.AreEqual(type.Name, "OkObjectResult"); }