// ****************************************************************

// Copyright 2007, Charlie Poole

// This is free software licensed under the NUnit license. You may

// obtain a copy of the license at http://nunit.org

// ****************************************************************

using System;

using System.Collections;



namespace NUnit.Core

{

	/// <summary>

	/// TestNode represents a single test or suite in the test hierarchy.

	/// TestNode holds common info needed about a test and represents a

	/// single node - either a test or a suite - in the hierarchy of tests.

	/// 

	/// TestNode extends TestInfo, which holds all the information with

	/// the exception of the list of child classes. When constructed from

	/// a Test, TestNodes are always fully populated with child TestNodes.

	/// 

	/// Like TestInfo, TestNode is purely a data class, and is not able

	/// to execute tests.

	/// 

	/// </summary>

	[Serializable]

	public class TestNode : TestInfo

	{

		#region Instance Variables

		private ITest parent;



		/// <summary>

		/// For a test suite, the child tests or suites

		/// Null if this is not a test suite

		/// </summary>

		private ArrayList tests;

		#endregion



		#region Constructors

		/// <summary>

		/// Construct from an ITest

		/// </summary>

		/// <param name="test">Test from which a TestNode is to be constructed</param>

		public TestNode ( ITest test ) : base( test )

		{

			if ( test.IsSuite )

			{

				this.tests = new ArrayList();

				

				foreach( ITest child in test.Tests )

				{

					TestNode node = new TestNode( child );

					this.Tests.Add( node );

					node.parent = this;

				}

			}

		}



        /// <summary>

        /// Construct a TestNode given a TestName and an

        /// array of child tests.

        /// </summary>

        /// <param name="testName">The TestName of the new test</param>

        /// <param name="tests">An array of tests to be added as children of the new test</param>

	    public TestNode ( TestName testName, ITest[] tests ) : base( testName, tests )

		{

			this.tests = new ArrayList();

			this.tests.AddRange( tests );

		}

		#endregion



		#region Properties

        /// <summary>

        /// Gets the parent test of the current test

        /// </summary>

		public override ITest Parent

		{

			get { return parent; }

		}



		/// <summary>

		/// Array of child tests, null if this is a test case.

		/// </summary>

		public override IList Tests 

		{

			get { return tests; }

		}

		#endregion

	}

}