Advanced Unit Testing, Part II - Core Implementation

using System;
using System.Collections;

namespace CaseStudy
{
	public class Part
	{
		private double vendorCost;
		private bool taxable;
		private double internalCost;
		private double markup;
		private string number;

		public double VendorCost
		{
			get {return vendorCost;}
			set {vendorCost=value;}
		}

		public bool Taxable
		{
			get {return taxable;}
			set {taxable=value;}
		}

		public double InternalCost
		{
			get {return internalCost;}
			set {internalCost=value;}
		}

		public double Markup
		{
			get {return markup;}
			set {markup=value;}
		}

		public string Number
		{
			get {return number;}
			set {number=value;}
		}
	}

	public class PartsArray
	{
		private ArrayList parts;

		public Part this[int index]
		{
			get {return parts[index] as Part;}
		}

		public int Count
		{
			get {return parts.Count;}
		}

		public PartsArray()
		{
			parts=new ArrayList();
		}
	}

	public class PartsHashtable
	{
		private Hashtable parts;

		public Part this[int index]
		{
			get {return parts[index] as Part;}
		}

		public int Count
		{
			get {return parts.Count;}
		}

		public PartsHashtable()
		{
			parts=new Hashtable();
		}
	}
}