public void Is_invalid_when_item_amount_does_not_equal_item_amount_times_product_price()
{
var orderItem = new OrderItem() { Amount = 30, Quantity = 3 };
var product = new Product { Price = 11 };
var rule = new OrderItemAmountValidityRule(orderItem, product);
rule.Validate().IsValid.ShouldBe(false);
rule.ErrorMessage.ShouldNotBe(null);
}
public async Task Is_valid_when_item_amount_equals_item_quantity_times_product_price_async()
{
var orderItem = new OrderItem() { Amount = 30, Quantity = 3 };
var product = new Product { Price = 10 };
var rule = new OrderItemAmountValidityRule(orderItem, product);
await rule.ValidateAsync();
rule.IsValid.ShouldBe(true);
rule.ErrorMessage.ShouldBe(null);
}