public void DeleteProductAsyncShouldDeleteProductCorrectly()
{
var options = new DbContextOptionsBuilder <IntillegioContext>()
.UseInMemoryDatabase(databaseName: "Delete_Product_Db")
.Options;
var dbContext = new IntillegioContext(options);
var service = new ShopService(dbContext, null);
var product = new Product();
dbContext.Products.Add(product);
dbContext.SaveChanges();
var productId = dbContext.Products.LastOrDefault().Id;
service.DeleteProductAsync(productId);
Assert.True(dbContext
.Products
.Any(a => a.Id == productId) == false);
}