public async Task AddAllProductsTest(int productsCount, int stocksCount)
{
InitializeMocks(productsCount, stocksCount);
var service = new StockService(_stockRepoMock.Object, _productRepoMock.Object,
_stockHistoryRepoMock.Object);
await service.AddAllProduct(_testWarehouse);
_stockRepoMock.Verify(m =>
m.AddRange(It.Is <IEnumerable <Stock> >(arg => arg.Count() == productsCount - stocksCount)));
}