public async Task DeleteManyByParamsId(Pizza a, Pizza b, Pizza c)
{
await Pizzas.AddMany(a, b, c);
await Pizzas.DeleteMany(a.Id, c.Id);
var ps = (await Pizzas.GetAll()).ToList();
var ts = (await Toppings.GetAll()).ToList();
var expectedToppings = a.Toppings.Concat(b.Toppings).Concat(c.Toppings).ToList();
Assert.Equal(1, ps.Count);
Assert.Contains(b, ps);
Assert.Equal(expectedToppings.Count, ts.Count);
Assert.All(ts, t => Assert.Contains(t, expectedToppings));
}
public async Task DeleteManyByEnumerableId(List <Pizza> pizzas, Pizza exclude)
{
await Pizzas.Add(exclude);
await Pizzas.AddMany(pizzas);
await Pizzas.DeleteMany(pizzas.Select(p => p.Id));
var ps = (await Pizzas.GetAll()).ToList();
var ts = (await Toppings.GetAll()).ToList();
var expectedToppings = pizzas.SelectMany(p => p.Toppings).Concat(exclude.Toppings).ToList();
Assert.Equal(1, ps.Count);
Assert.Contains(exclude, ps);
Assert.Equal(expectedToppings.Count, ts.Count);
Assert.All(ts, t => Assert.Contains(t, expectedToppings));
}