food-market/tests/food-market.UnitTests/NoopNegativeStockAlertService.cs

using System;
using System.Threading;
using System.Threading.Tasks;
using foodmarket.Application.Inventory;

namespace foodmarket.UnitTests;

/// <summary>No-op реализация <see cref="INegativeStockAlertService"/> для юнит-тестов
/// StockService, которым неважны предупреждения об отрицательных остатках (они
/// проверяют только арифметику остатков). Поведение алертов покрыто отдельными
/// интеграционными тестами (NegativeStockTests).</summary>
public sealed class NoopNegativeStockAlertService : INegativeStockAlertService
{
    public static readonly NoopNegativeStockAlertService Instance = new();

    public Task OnStockLevelAsync(
        Guid storeId, Guid productId, decimal newQty,
        string? causeDocType, Guid? causeDocId, string? causeDocNumber,
        Guid? causeUserId, DateTime? causeAt,
        CancellationToken ct = default) => Task.CompletedTask;
}