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Advanced Unit Testing, Part III - Testing Processes

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28 Sep 200314 min read 433K   2.6K   206  
Extend Unit Testing So That Entire Processes Can Be Tested
 
using System;

using UnitTest;

namespace CaseStudy
{
	[TestFixture]
	public class PartTest
	{
		[Test]
		public void ConstructorInitialization()
		{
			Part part=new Part();
			Assertion.Assert(part.VendorCost==0, "VendorCost is not zero.");
			Assertion.Assert(part.Taxable==false, "Taxable is not false.");
			Assertion.Assert(part.InternalCost==0, "InternalCost is not zero.");
			Assertion.Assert(part.Markup==0, "Markup is not zero.");
			Assertion.Assert(part.Number=="", "Number is not an empty string.");
		}

		[Test]
		public void SetVendorInfo()
		{
			Part part=new Part();
			part.Number="FIG 4RAC #R11T";
			part.VendorCost=12.50;
			part.Taxable=true;
			part.InternalCost=13.00;
			part.Markup=2.0;
		
			Assertion.Assert(part.Number=="FIG 4RAC #R11T", "Number did not get set.");
			Assertion.Assert(part.VendorCost==12.50, "VendorCost did not get set.");
			Assertion.Assert(part.Taxable==true, "Taxable did not get set.");
			Assertion.Assert(part.InternalCost==13.00, "InternalCost did not get set.");
			Assertion.Assert(part.Markup==2.0, "Markup did not get set.");
		}
	}

	[TestFixture]
	public class VendorTest
	{
		private Vendor vendor;

		[TestSetUp]
		public void VendorSetUp()
		{
			vendor=new Vendor();
		}

		[Test]
		public void ConstructorInitialization()
		{
			Assertion.Assert(vendor.Name=="", "Name is not an empty string.");
			Assertion.Assert(vendor.PartCount==0, "PartCount is not zero.");
		}

		[Test]
		public void VendorName()
		{
			vendor.Name="Jamestown Distributors";
			Assertion.Assert(vendor.Name=="Jamestown Distributors", "Name did not get set.");
			}

		[Test]
		public void AddUniqueParts()
		{
			CreateTestParts();
			Assertion.Assert(vendor.PartCount==2, "PartCount is not 2.");
		}

		[Test]
		public void RetrieveParts()
		{
			CreateTestParts();
			Part part;
			part=vendor.Parts[0];
			Assertion.Assert(part.Number=="BOD-13-25P", "PartNumber is wrong.");
			part=vendor.Parts[1];
			Assertion.Assert(part.Number=="BOD-13-33P", "PartNumber is wrong.");
		}

		[Test, ExpectedException(typeof(DuplicatePartException))]
		public void DuplicateParts()
		{
			Part part=new Part();
			part.Number="Same Part Number";
			vendor.Add(part);
			vendor.Add(part);
		}

		[Test, ExpectedException(typeof(UnassignedPartException))]
		public void UnassignedPartNumber()
		{
			Part part=new Part();
			vendor.Add(part);
		}

		void CreateTestParts()
		{
			Part part1=new Part();
			part1.Number="BOD-13-25P";
			vendor.Add(part1);
		
			Part part2=new Part();
			part2.Number="BOD-13-33P";
			vendor.Add(part2);
		}	
	}

	[TestFixture]
	public class ChargeTest
	{
		[Test]
		public void ConstructorInitialization()
		{
			Charge charge=new Charge();
			Assertion.Assert(charge.Description=="", "Description is not an empty string.");
			Assertion.Assert(charge.Amount==0, "Amount is not zero.");
		}
	
		[Test]
		public void SetChargeInfo()
		{
			Charge charge=new Charge();
			charge.Description="Freight";
			charge.Amount=8.50;
		
			Assertion.Assert(charge.Description=="Freight", "Description is not set.");
			Assertion.Assert(charge.Amount==8.50, "Amount is not set correctly.");
		}
	}

	[TestFixture]
	public class ChargeSlipTest
	{
		private ChargeSlip chargeSlip;

		[TestSetUp]
		public void SetUp()
		{
			chargeSlip=new ChargeSlip();
		}

		[Test]
		public void ConstructorInitialization()
		{
			Assertion.Assert(chargeSlip.Number=="", "Number is not initialized correctly.");
			Assertion.Assert(chargeSlip.PartCount==0, "PartCount is not zero.");
			Assertion.Assert(chargeSlip.ChargeCount==0, "ChargeCount is not zero.");
		}

		[Test]
		public void ChargeSlipNumberAssignment()
		{
			chargeSlip.Number="123456";
			Assertion.Assert(chargeSlip.Number=="123456", "Number is not set correctly.");
			}

		[Test, ExpectedException(typeof(BadChargeSlipNumberException))]
		public void BadChargeSlipNumber()
		{
			chargeSlip.Number="12345";			// must be six digits or letters
		}

		[Test]
		public void AddPart()
		{
			Part part=new Part();
			part.Number="VOD-13-33P";
			chargeSlip.Add(part);
			Assertion.Assert(chargeSlip.PartCount==1, "PartCount is wrong.");
		}

		[Test]
		public void AddCharge()
		{
			Charge charge=new Charge();
			charge.Description="Freight";
			charge.Amount=10.50;		
			chargeSlip.Add(charge);
			Assertion.Assert(chargeSlip.ChargeCount==1, "ChargeCount is wrong.");
		}

		[Test]
		public void RetrievePart()
		{
			Part part=new Part();
			part.Number="VOD-13-33P";
			chargeSlip.Add(part);
			Part p2=chargeSlip.Parts[0];
			Assertion.Assert(p2.Number==part.Number, "Part numbers do not match.");
		}

		[Test]
		public void RetrieveCharge()
		{
			Charge charge=new Charge();
			charge.Description="Freight";
			charge.Amount=10.50;		
			chargeSlip.Add(charge);
			Charge c2=chargeSlip.Charges[0];
			Assertion.Assert(c2.Description==charge.Description, "Descriptions do not match.");
		}

		[Test, ExpectedException(typeof(UnassignedPartException))]
		public void AddUnassignedPart()
		{
			Part part=new Part();
			chargeSlip.Add(part);
		}

		[Test, ExpectedException(typeof(UnassignedChargeException))]
		public void UnassignedCharge()
		{
			Charge charge=new Charge();
			chargeSlip.Add(charge);
		}
	}

	[TestFixture]
	public class WorkOrderTest
	{
		private WorkOrder workOrder;

		[TestSetUp]
		public void WorkOrderSetUp()
		{
			workOrder=new WorkOrder();
		}

		[Test]
		public void ConstructorInitialization()
		{
			Assertion.Assert(workOrder.Number=="", "Number not initialized.");
			Assertion.Assert(workOrder.ChargeSlipCount==0, "ChargeSlipCount not initialized.");
		}

		[Test]
		public void WorkOrderNumber()
		{
			workOrder.Number="112233";
			Assertion.Assert(workOrder.Number=="112233", "Number not set.");
			}

		[Test, ExpectedException(typeof(BadWorkOrderNumberException))]
		public void BadWorkOrderNumber()
		{
			workOrder.Number="12345";
		}

		[Test]
		public void AddChargeSlip()
		{
			ChargeSlip chargeSlip=new ChargeSlip();
			chargeSlip.Number="123456";
			workOrder.Add(chargeSlip);
			Assertion.Assert(workOrder.ChargeSlipCount==1, "ChargeSlip not added.");
		}

		[Test]
		public void RetrieveChargeSlip()
		{
			ChargeSlip chargeSlip=new ChargeSlip();
			chargeSlip.Number="123456";
			workOrder.Add(chargeSlip);
			ChargeSlip cs2=workOrder.ChargeSlips[0];
			Assertion.Assert(chargeSlip.Number==cs2.Number, "ChargeSlip numbers do not match.");
		}

		[Test, ExpectedException(typeof(DuplicateChargeSlipException))]
		public void DuplicateChargeSlip()
		{
			ChargeSlip chargeSlip=new ChargeSlip();
			chargeSlip.Number="123456";
			workOrder.Add(chargeSlip);
			workOrder.Add(chargeSlip);
		}

		[Test, ExpectedException(typeof(UnassignedChargeSlipException))]
		public void UnassignedChargeSlipNumber()
		{
			ChargeSlip chargeSlip=new ChargeSlip();
			workOrder.Add(chargeSlip);
		}
	}

	[TestFixture]
	public class InvoiceTest
	{
		private Invoice invoice;

		[TestSetUp]
		public void InvoiceSetUp()
		{
			invoice=new Invoice();
		}

		[Test]
		public void ConstructorInitialization()
		{
			Assertion.Assert(invoice.Number=="", "Number not initialized.");
			Assertion.Assert(invoice.ChargeCount==0, "ChargeCount not initialized.");
			Assertion.Assert(invoice.Vendor==null, "Vendor not initialized.");
		}

		[Test]
		public void InvoiceNumber()
		{
			invoice.Number="112233";
			Assertion.Assert(invoice.Number=="112233", "Number not set.");
		}

		[Test]
		public void InvoiceVendor()
		{
			Vendor vendor=new Vendor();
			vendor.Name="Nantucket Parts";
			invoice.Vendor=vendor;
			Assertion.Assert(invoice.Vendor.Name==vendor.Name, "Vendor name not set.");
		}

		[Test]
		public void AddCharge()
		{
			Charge charge=new Charge();
			charge.Description="Freight";
			invoice.Add(charge);
			Assertion.Assert(invoice.ChargeCount==1, "Charge count wrong.");
		}

		[Test]
		public void RetrieveCharge()
		{
			Charge charge=new Charge();
			charge.Description="123456";
			invoice.Add(charge);
			Charge c2=invoice.Charges[0];
			Assertion.Assert(charge.Description==c2.Description, "Charge description does not match.");
		}

		[Test, ExpectedException(typeof(UnassignedChargeException))]
		public void UnassignedChargeNumber()
		{
			Charge charge=new Charge();
			invoice.Add(charge);
		}
	}

	[TestFixture]
	public class CustomerTest
	{
		private Customer customer;

		[TestSetUp]
		public void CustomerSetUp()
		{
			customer=new Customer();
		}

		[Test]
		public void ConstructorInitialization()
		{
			Assertion.Assert(customer.Name=="", "Name not initialized.");
			Assertion.Assert(customer.WorkOrderCount==0, "WorkOrderCount not initialized.");
		}

		[Test]
		public void CustomerName()
		{
			customer.Name="Marc Clifton";
			Assertion.Assert(customer.Name=="Marc Clifton", "Name not set.");
		}

		[Test]
		public void AddWorkOrder()
		{
			WorkOrder workOrder=new WorkOrder();
			workOrder.Number="123456";
			customer.Add(workOrder);
			Assertion.Assert(customer.WorkOrderCount==1, "Work order not added.");
		}

		[Test]
		public void RetrieveWorkOrder()
		{
			WorkOrder workOrder=new WorkOrder();
			workOrder.Number="123456";
			customer.Add(workOrder);
			WorkOrder wo2=customer.WorkOrders[0];
			Assertion.Assert(workOrder.Number==wo2.Number, "WorkOrder numbers do not match.");
		}

		[Test, ExpectedException(typeof(UnassignedWorkOrderException))]
		public void UnassignedWorkOrderNumber()
		{
			WorkOrder workOrder=new WorkOrder();
			customer.Add(workOrder);
		}
	}

	[TestFixture]
	public class PurchaseOrderTest
	{
		private PurchaseOrder po;
		private Vendor vendor;

		[TestSetUp]
		public void PurchaseOrderSetUp()
		{
			po=new PurchaseOrder();
			vendor=new Vendor();
			vendor.Name="West Marine";
			po.Vendor=vendor;
		}

		[Test]
		public void ConstructorInitialization()
		{
			PurchaseOrder po=new PurchaseOrder();
			Assertion.Assert(po.Number=="", "Number not initialized.");
			Assertion.Assert(po.PartCount==0, "PartCount not initialized.");
			Assertion.Assert(po.ChargeCount==0, "ChargeCount not initialized.");
			Assertion.Assert(po.Invoice==null, "Invoice not initialized.");
			Assertion.Assert(po.Vendor==null, "Vendor not initialized.");
		}

		[Test]
		public void PONumber()
		{
			po.Number="123456";
			Assertion.Assert(po.Number=="123456", "Number not set.");
		}

		[Test]
		public void AddPart()
		{
			WorkOrder workOrder=new WorkOrder();
			workOrder.Number="123456";
			Part part=new Part();
			part.Number="112233";
			vendor.Add(part);
			po.Add(part, workOrder);
			WorkOrder wo2;
			Part p2;
			po.GetPart(0, out p2, out wo2);
			Assertion.Assert(p2.Number==part.Number, "Part number does not match.");
			Assertion.Assert(wo2.Number==workOrder.Number, "Work order number does not match.");
		}

		[Test, ExpectedException(typeof(PartNotFromVendorException))]
		public void AddPartNotFromVendor()
		{
			WorkOrder workOrder=new WorkOrder();
			workOrder.Number="123456";
			Part part=new Part();
			part.Number="131133";
			po.Add(part, workOrder);
		}

		[Test, ExpectedException(typeof(DifferentVendorException))]
		public void AddInvoiceFromDifferentVendor()
		{
			Vendor vendor1=new Vendor();
			vendor1.Name="ABC Co.";
			po.Vendor=vendor1;
			Invoice invoice=new Invoice();
			invoice.Number="123456";
			Vendor vendor2=new Vendor();
			vendor2.Name="XYZ Inc.";
			invoice.Vendor=vendor2;
			po.Invoice=invoice;
		}

		[Test, ExpectedException(typeof(UnassignedWorkOrderException))]
		public void UnassignedWorkOrderNumber()
		{
			WorkOrder workOrder=new WorkOrder();
			Part part=new Part();
			part.Number="112233";
			po.Add(part, workOrder);
		}

		[Test, ExpectedException(typeof(UnassignedPartException))]
		public void UnassignedPartNumber()
		{
			WorkOrder workOrder=new WorkOrder();
			workOrder.Number="123456";
			Part part=new Part();
			po.Add(part, workOrder);
		}

		[Test, ExpectedException(typeof(UnassignedInvoiceException))]
		public void UnassignedInvoiceNumber()
		{
			Invoice invoice=new Invoice();
			po.Invoice=invoice;
		}

		[Test]
		public void ClosePO()
		{
			WorkOrder wo1=new WorkOrder();
			WorkOrder wo2=new WorkOrder();

			wo1.Number="000001";
			wo2.Number="000002";

			Part p1=new Part();
			Part p2=new Part();
			Part p3=new Part();

			p1.Number="A";
			p1.VendorCost=15;

			p2.Number="B";
			p2.VendorCost=20;

			p3.Number="C";
			p3.VendorCost=25;

			vendor.Add(p1);
			vendor.Add(p2);
			vendor.Add(p3);

			po.Add(p1, wo1);
			po.Add(p2, wo1);
			po.Add(p3, wo2);

			Charge charge=new Charge();
			charge.Description="Freight";
			charge.Amount=10.50;

			Invoice invoice=new Invoice();
			invoice.Number="1234";
			invoice.Vendor=vendor;
			invoice.Add(charge);

			po.Invoice=invoice;

			po.Close();

			// one charge slip should be added to both work orders
			Assertion.Assert(wo1.ChargeSlipCount==1, "First work order: ChargeSlipCount not 1.");
			Assertion.Assert(wo2.ChargeSlipCount==1, "Second work order: ChargeSlipCount not 1.");

			ChargeSlip cs1=wo1.ChargeSlips[0];
			ChargeSlip cs2=wo2.ChargeSlips[0];

			// three charges should exist for charge slip #1: two parts and one freight charge
			Assertion.Assert(cs1.PartCount + cs1.ChargeCount==3, "Charge slip 1: doesn't have three charges.");

			// the freight for CS1 should be 10.50 * (15+20)/(15+20+25) = 6.125
			Assertion.Assert(cs1.Charges[0].Amount==6.125, "Charge slip 1: charge not the correct amount.");

			// two charges should exist for charge slip #2: one part and one freight charge
			Assertion.Assert(cs2.PartCount + cs2.ChargeCount==2, "Charge slip 2: doesn't have two charges.");

			// the freight for CS2 should be 10.50 * 25/(15+20+25) = 4.375  (also = 10.50-6.125)
			Assertion.Assert(cs2.Charges[0].Amount==4.375, "Charge slip 2: charge not the correct amount.");

			// while we have a unit test that verifies that parts are added to charge slips correctly,
			// we don't have a unit test to verify that the purchase order Close process does this
			// correctly.

			Part cs1p1=cs1.Parts[0];
			Part cs1p2=cs1.Parts[1];
			if (cs1p1.Number=="A")
			{
				Assertion.Assert(cs1p1.VendorCost==15, "Charge slip 1, vendor cost not correct for part A.");
			}
			else if (cs1p1.Number=="B")
			{
				Assertion.Assert(cs1p1.VendorCost==20, "Charge slip 1, vendor cost not correct for part B.");
			}
			else
			{
				throw(new IncorrectChargeSlipException());
			}

			Assertion.Assert(cs1p1.Number != cs1p2.Number, "Charge slip part numbers are not unique.");

			if (cs1p2.Number=="A")
			{
				Assertion.Assert(cs1p2.VendorCost==15, "Charge slip 1, vendor cost is not correct for part A.");
			}
			else if (cs1p2.Number=="B")
			{
				Assertion.Assert(cs1p2.VendorCost==20, "Charge slip 1, vendor cost is not correct for part B.");
			}
			else
			{
				throw(new IncorrectChargeSlipException());
			}

			Assertion.Assert(cs2.Parts[0].Number=="C", "Charge slip 2, part number is not correct.");
			Assertion.Assert(cs2.Parts[0].VendorCost==25, "Charge slip 2, vendor cost is not correct for part C.");		
		}
	}
}

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Written By
Marc Clifton
Architect Interacx
United States United States
Blog: https://marcclifton.wordpress.com/
Home Page: http://www.marcclifton.com
Research: http://www.higherorderprogramming.com/
GitHub: https://github.com/cliftonm

All my life I have been passionate about architecture / software design, as this is the cornerstone to a maintainable and extensible application. As such, I have enjoyed exploring some crazy ideas and discovering that they are not so crazy after all. I also love writing about my ideas and seeing the community response. As a consultant, I've enjoyed working in a wide range of industries such as aerospace, boatyard management, remote sensing, emergency services / data management, and casino operations. I've done a variety of pro-bono work non-profit organizations related to nature conservancy, drug recovery and women's health.

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Posted 28 Sep 2003

Article Copyright 2003 by Marc Clifton
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