public async void Delete() { Mock <ILogger <PostLinkRepository> > loggerMoc = PostLinkRepositoryMoc.GetLoggerMoc(); ApplicationDbContext context = PostLinkRepositoryMoc.GetContext(); var repository = new PostLinkRepository(loggerMoc.Object, context); PostLink entity = new PostLink(); context.Set <PostLink>().Add(entity); await context.SaveChangesAsync(); await repository.Delete(entity.Id); PostLink modifiedRecord = await context.Set <PostLink>().FirstOrDefaultAsync(); modifiedRecord.Should().BeNull(); }