/src/NUnit/mocks/MockInterfaceHandler.cs

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

// 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;

using System.Runtime.Remoting.Proxies;

using System.Runtime.Remoting.Messaging;

using System.Reflection;



namespace NUnit.Mocks

{

	/// <summary>

	/// Summary description for MockInterfaceHandler.

	/// </summary>

	public class MockInterfaceHandler : RealProxy

	{

		private ICallHandler callHandler;



		public MockInterfaceHandler( Type type, ICallHandler callHandler ) : base( type ) 

		{ 

			this.callHandler = callHandler;

		}



		public override IMessage Invoke( IMessage msg )

		{

			IMethodCallMessage call = (IMethodCallMessage)msg;

			IMethodReturnMessage result = null; 



			if ( call != null )

			{

				try

				{

					object ret = callHandler.Call( call.MethodName, call.Args );



					if ( ret == null )

					{

						MethodInfo info = call.MethodBase as MethodInfo;

						Type returnType = info.ReturnType;



						if( returnType == typeof( System.Boolean ) ) ret = false; 



						if( returnType == typeof( System.Byte    ) ) ret = (System.Byte)0;

						if( returnType == typeof( System.SByte   ) ) ret = (System.SByte)0;

						if( returnType == typeof( System.Decimal ) ) ret = (System.Decimal)0;

						if( returnType == typeof( System.Double  ) ) ret = (System.Double)0;

						if( returnType == typeof( System.Single  ) ) ret = (System.Single)0;

						if( returnType == typeof( System.Int32   ) ) ret = (System.Int32)0;

						if( returnType == typeof( System.UInt32  ) ) ret = (System.UInt32)0;

						if( returnType == typeof( System.Int64   ) ) ret = (System.Int64)0;

						if( returnType == typeof( System.UInt64  ) ) ret = (System.UInt64)0;

						if( returnType == typeof( System.Int16   ) ) ret = (System.Int16)0;

						if( returnType == typeof( System.UInt16  ) ) ret = (System.UInt16)0;



						if( returnType == typeof( System.Char	 ) ) ret = '?';

					}



					result = new ReturnMessage( ret, null, 0, null, call );

				} 

				catch( Exception e )

				{

					result = new ReturnMessage( e, call );

				}

			}



			return result;

		}

	}

}