public async Task GetBlogPageAsyncEmptyTest()
        {
            var contentService = new BlogContentService(
                new DbBlogRepositoryBuilder()
                .WithBlogElements(new List <BlogElement>())
                .Build());
            var result = await contentService.GetBlogPageAsync("201902", 1);

            result.Should().BeEmpty();
        }
        public async Task GetBlogPageAsyncTest()
        {
            var blogElements = new List <BlogElement>()
            {
                new BlogElementBuilder().Build()
            };
            var contentService = new BlogContentService(
                new DbBlogRepositoryBuilder()
                .WithBlogElements(blogElements)
                .Build());
            var result = await contentService.GetBlogPageAsync("201901", 1);

            result.Should().NotBeNull();
            result.Should().Equals(blogElements);
        }