public void ShouldNotConvertNull()
        {
            var    converter  = new BlogConverter();
            Action conversion = () => converter.ConvertToPost(null);

            conversion.Should().Throw <ArgumentNullException>();
        }
        public void ShouldConvertPost()
        {
            var expectedPost = new Post
            {
                AuthorId = 69,
                Text     = "aaaaa",
                Title    = "bbbbb"
            };

            var converter  = new BlogConverter();
            var actualPost = converter.ConvertToPost(new Models.AddPostDto
            {
                AuthorId = 69,
                Text     = "aaaaa",
                Title    = "bbbbb"
            });

            expectedPost.Should().BeEquivalentTo(actualPost);
        }