public void Is_invalid_when_item_price_does_not_equal_product_price()
{
var orderItem = new OrderItem() { Price = 10 };
var product = new Product { Price = 11 };
var rule = new OrderItemPriceValidityRule(orderItem, product);
rule.Validate().IsValid.ShouldBe(false);
rule.ErrorMessage.ShouldNotBe(null);
}
public void Is_valid_when_item_price_equals_product_price()
{
var orderItem = new OrderItem() { Price = 10 };
var product = new Product { Price = 10 };
var rule = new OrderItemPriceValidityRule(orderItem, product);
rule.Validate().IsValid.ShouldBe(true);
rule.ErrorMessage.ShouldBe(null);
}