ModelFactoryBase.cs

using System.Collections.Generic;
using NUnit.Framework;

namespace ServiceStack.Common.Tests.Models
{
	public abstract class ModelFactoryBase<T>
		: IModelFactory<T>
	{
		#region Implementation of IModelFactory<T>

		public void AssertListsAreEqual(List<T> actualList, IList<T> expectedList)
		{
			Assert.That(actualList, Has.Count.EqualTo(expectedList.Count));
			var i = 0;

			actualList.ForEach(x =>
				AssertIsEqual(x, expectedList[i++]));
		}

		public abstract T CreateInstance(int i);

		public abstract void AssertIsEqual(T actual, T expected);

		public T ExistingValue
		{
			get
			{
				return CreateInstance(4);
			}
		}

		public T NonExistingValue
		{
			get
			{
				return CreateInstance(5);
			}
		}

		public List<T> CreateList()
		{
			return new List<T> 
			{
				CreateInstance(1),
				CreateInstance(2),
				CreateInstance(3),
				CreateInstance(4),
			};
		}
		public List<T> CreateList2()
		{
			return new List<T> 
			{
				CreateInstance(5),
			    CreateInstance(6),
			    CreateInstance(7),
			};
		}

		#endregion
	}
}