Simple Data Access in C#

using System;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using Yap.Data.Client;


namespace Yap.Data.UnitTest
{
	[TestClass]
	public class TransactionScopeTestFixture
	{
		[TestMethod]
		[ExpectedException(typeof(InvalidOperationException))]
		public void Constructor_ParentScopeIsNotSessionOrTransaction_ThrowInvalidOperationException()
		{
			new TransactionScope();
		}

		[TestMethod]
		public void Constructor__NameShouldBeSetAccordinglyToNestingLevel()
		{
			using (new SessionScope())
			{
				using (var t0 = new TransactionScope())
				{
					Assert.AreEqual("T0", t0.Name);
					using (var t00 = new TransactionScope())
					{
						Assert.AreEqual("T0-0", t00.Name);
						using (var t000 = new TransactionScope())
						{
							Assert.AreEqual("T0-0-0", t000.Name);
							t000.Rollback();
						}
						using (var t001 = new TransactionScope())
						{
							Assert.AreEqual("T0-0-1", t001.Name);
							t001.Rollback();
						}
						t00.Rollback();
					}
					using (var t01 = new TransactionScope())
					{
						Assert.AreEqual("T0-1", t01.Name);
						using (var t010 = new TransactionScope())
						{
							Assert.AreEqual("T0-1-0", t010.Name);
						}
						using (var t011 = new TransactionScope())
						{
							Assert.AreEqual("T0-1-1", t011.Name);
						}
					}
					t0.Rollback();
				}
				using (var t0 = new TransactionScope())
				{
					Assert.AreEqual("T0", t0.Name);
				}
			}
		}

		[TestMethod]
		public void get_Session__ReturnParentSession()
		{
			using (var session = new SessionScope())
			{
				using (var t0 = new TransactionScope())
				{
					Assert.AreSame(session, t0.Session);
					using (var t00 = new TransactionScope())
					{
						Assert.AreSame(session, t00.Session);
					}
					using (var t01 = new TransactionScope())
					{
						Assert.AreSame(session, t01.Session);
					}
				}
				using (var t0 = new TransactionScope())
				{
					Assert.AreSame(session, t0.Session);
				}
			}
		}
	}
}