public void Given_postId_userId_rank_When_CreateLike_Returns_Like() { //Given var postId = 1; var userId = "2"; var rank = RatingType.Positive; //When var result = _postFactory.CreateLike(postId, userId, rank); //Then Assert.NotNull(result); Assert.IsInstanceOf <Like>(result); Assert.AreEqual(postId, result.PostId); Assert.AreEqual(rank, result.RatingType); Assert.AreEqual(userId, result.UserID); }