public void Given_CreateCommentViewModel_When_CreateComment_Returns_Comment() { //Given var model = new AddCommentViewModel() { Content = "Sobaka", PostId = 1 }; //When var result = _postFactory.CreateComment(model); //Then Assert.NotNull(result); Assert.IsInstanceOf <Comment>(result); Assert.AreEqual("Shrook", result.Author); Assert.AreEqual("22", result.AuthorId); Assert.AreEqual(model.Content, result.Content); }