public void AddLineItemAlternateCreatedByMaintenanceTeamAccidentallySixMonthsLater(LineItem lineItem)
{
lineItem.Parent = this;
LineItem nullChecker = null;
_lineItems.TryGetValue(lineItem.InvoiceNumber, out nullChecker);
if(nullChecker == null)
_lineItems.Add(lineItem.InvoiceNumber, lineItem);
}
public void AddLineItem(LineItem lineItem)
{
lineItem.Parent = this;
LineItem nullChecker = null;
_lineItems.TryGetValue(lineItem.Id, out nullChecker);
if(nullChecker == null)
_lineItems.Add(lineItem.Id, lineItem);
}
public void Junior_Dev_Accidentally_Changes_Identity_And_Equality_In_Second_Method()
{
var lineItem1 = new LineItem { Id = 35, Description = "Shirt", InvoiceNumber=10001 };
var lineItem2 = new LineItem { Id = 35, Description = "Shirt", InvoiceNumber=10002 };
var sut = new Invoice { Id = 1 };
Assert.AreEqual(0, sut.LineItems().Count());
sut.AddLineItemAlternateCreatedByMaintenanceTeamAccidentallySixMonthsLater(lineItem1);
sut.AddLineItemAlternateCreatedByMaintenanceTeamAccidentallySixMonthsLater(lineItem2);
Assert.AreEqual(1, sut.LineItems().Count(), "LineItems should only increment for unique Id");
}
public void AddLineItem_Checks_Identity_and_Equality_Based_On_Id_Property()
{
var lineItem1 = new LineItem { Id = 35, Description = "Shirt" };
var lineItem2 = new LineItem { Id = 35, Description = "Shirt" };
var sut = new Invoice { Id = 1 };
Assert.AreEqual(0, sut.LineItems().Count());
sut.AddLineItem(lineItem1);
sut.AddLineItem(lineItem2);
Assert.AreEqual(1, sut.LineItems().Count(), "LineItems should only increment for unique Id");
}