public void GivenOpenOrder_WhenAddingItemsThatExceedMaxOrderValue_ShouldFail()
{
// Arrange
var order = new SalesOrder();
order.Open(new SalesOrderId(1), new CustomerId(2), new Address("1 Arnold Lane", "Elsewhere", new PostalCode("EL12", "1YY")), (decimal)7.5);
// Act
order.AddItems(3, new ProductId(3), (decimal)2.5);
// Assert
Assert.Throws <InvalidOperationException>(() => order.AddItems(1, new ProductId(3), (decimal)2.5));
}
public void GivenOpenOrder_WhenAddingItems_ShouldSucceed()
{
// Arrange
var order = new SalesOrder();
order.Open(new SalesOrderId(1), new CustomerId(2), new Address("1 Arnold Lane", "Elsewhere", new PostalCode("EL12", "1YY")), (decimal)7.5);
// Act
order.AddItems(3, new ProductId(3), (decimal)2.5);
// Assert
Assert.AreEqual((decimal)7.5, order.TotalValue);
}