public async Task AddShowLinkTest() { await Repositories.LibraryManager.Create(TestSample.GetNew <Library>()); await _repository.AddShowLink(1, 2, null); await using DatabaseContext context = Repositories.Context.New(); Show show = context.Shows .Include(x => x.Libraries) .First(x => x.ID == 1); Assert.Contains(2, show.Libraries.Select(x => x.ID)); }