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));
}
