public async Task TestDeleteArticleAsync_WithCorrectData_ShouldSetIsDeletedToTrue()
{
var context = ApplicationDbContextInMemoryFactory.InitializeContext();
var repository = new EfDeletableEntityRepository <Article>(context);
var articleId = "asdf";
await repository.AddAsync(new Article { Id = articleId });
await repository.SaveChangesAsync();
var service = new ArticlesService(repository, new ImageService());
await service.DeleteArticleAsync(articleId);
var articlesCount = repository.All().ToList().Count;
Assert.Equal(0, articlesCount);
}