public void AddComment_ValidComment_Test()
        {
            var init = new InitializeMockContext();
            var mock = init.mock;

            var controller = new PostCommentsService(mock.Object, mapper);

            controller.AddComment(new AddPostCommentCommand {
                Content = "Testowy Komentarz", PostId = 1, UserId = 1
            });
            init.mockSetComments.Verify(m => m.Add(It.IsAny <PostComments>()), Times.Once());
            mock.Verify(m => m.SaveChanges(), Times.Once());
        }
        public void AddComment_Counting_Test()
        {
            var init    = new InitializeMockContext();
            var mock    = init.mock;
            var imageId = 1;
            var expectedCommentCountInt = mock.Object.Posts.Where(x => x.Id == imageId).First().CommentsCount;

            var controller = new PostCommentsService(mock.Object, mapper);

            controller.AddComment(new AddPostCommentCommand {
                UserId = 2, PostId = imageId
            });
            mock.Verify(m => m.SaveChanges(), Times.Once());

            Assert.AreEqual(expectedCommentCountInt + 1, mock.Object.Posts.Where(x => x.Id == imageId).First().CommentsCount);
        }