public async Task GivenArticleTagId_ReturnsTheCorrectTagString()
        {
            var tagsByArticleIdQuery = new TagsByArticleIdQuery {
                ArticleId = 1
            };
            var sut = new TagsByArticleIdQueryHandler(Context);

            var result = await sut.Handle(tagsByArticleIdQuery, default(CancellationToken));

            result.Should().Be("TagNameOne,TagNameTwo");
        }
        public async Task GivenArticleTagId_ReturnsTheCorrectType()
        {
            var tagsByArticleIdQuery = new TagsByArticleIdQuery {
                ArticleId = 1
            };
            var sut = new TagsByArticleIdQueryHandler(Context);

            var result = await sut.Handle(tagsByArticleIdQuery, default(CancellationToken));

            result.Should().NotBeNull();
            result.Should().BeOfType <string>();
        }