mono/mcs/class/System.Core/Test/System.Threading.Tasks/TaskExtensionsTests.cs

// 
// TaskExtensionsTests.cs
//  
// Author:
//       Jérémie "Garuma" Laval <[email protected]>
// 
// Copyright (c) 2010 Jérémie "Garuma" Laval
// 
// Permission is hereby granted, free of charge, to any person obtaining a copy
// of this software and associated documentation files (the "Software"), to deal
// in the Software without restriction, including without limitation the rights
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
// copies of the Software, and to permit persons to whom the Software is
// furnished to do so, subject to the following conditions:
// 
// The above copyright notice and this permission notice shall be included in
// all copies or substantial portions of the Software.
// 
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
// THE SOFTWARE.

#if NET_4_0

using System;
using System.Threading;
using System.Threading.Tasks;

using NUnit.Framework;

namespace MonoTests.System.Threading.Tasks
{
	[TestFixture]
	public class TaskExtensionsTests
	{	
		[Test]
		public void TaskUnwrapingBehavioralTest ()
		{
			Task<int> t2 = Increment(4)
				.ContinueWith((t) => Increment(t.Result))
				.Unwrap().ContinueWith((t) => Increment(t.Result))
				.Unwrap().ContinueWith((t) => Increment(t.Result))
                .Unwrap();

			t2.Wait ();
			Assert.AreEqual (8, t2.Result);
		}

		static Task<int> Increment (int num)
		{
			return Task<int>.Factory.StartNew (() => num + 1);
		}
	}
}
#endif