public async Task Pending_items_should_be_sent()
{
// arrange
var items = new Fixture().CreateMany <FeedItem>(3).ToList();
items.ForEach(x => x.Status = FeedItemStatus.Pending);
db.FeedItems.AddRange(items);
db.SaveChanges();
// act
var service = new SenderService(settings, serviceContext, telegram);
await service.SendPendingsAsync(ct);
// assert
db.FeedItems.All(x => x.Status == FeedItemStatus.Sent).Should().BeTrue();
items.ForEach(item =>
telegram.Received().SendMessageAsync(ChatId(item), item.Link).Wait());
}