mono/mcs/class/System.Core/Test/System.Linq.Expressions/ExpressionTest_ElementInit.cs

//
// ExpressionTest_ElementInit.cs
//
// Author:
//   olivier Dufour ([email protected])
//
// (C) 2008 Novell, Inc. (http://www.novell.com)
//
// 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.
//

using System;
using System.Reflection;
using System.Collections.Generic;
using System.Linq;
using System.Linq.Expressions;
using NUnit.Framework;

namespace MonoTests.System.Linq.Expressions {

	[TestFixture]
	public class ExpressionTest_ElementInit {

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void MethodNull ()
		{
			Expression.ElementInit (null, new Expression [] {});
		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void ArgNull ()
		{
			Expression.ElementInit (typeof (Foo).GetMethod ("Add"), null);
		}

		[Test]
		[ExpectedException (typeof (ArgumentException))]
		public void MethodNameDoesntMatchAdd ()
		{
			Expression.ElementInit (typeof (Foo).GetMethod ("Bar"), new Expression [] {});
		}

		[Test]
		[ExpectedException (typeof (ArgumentException))]
		public void AddMethodIsNotAnInstanceMethod ()
		{
			Expression.ElementInit (typeof (Bar).GetMethod ("Add"), new Expression [] {});
		}

		[Test]
		[ExpectedException (typeof (ArgumentException))]
		public void MethodArgumentCountDoesnMatchParameterLength ()
		{
			Expression.ElementInit (typeof (Foo).GetMethod ("Add"), new Expression [] {});

		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void MethodHasNullArgument ()
		{
			Expression.ElementInit (typeof (Foo).GetMethod ("Add"), new Expression [] {null});
		}

		[Test]
		[ExpectedException (typeof (ArgumentException))]
		public void MethodArgumentDoesntMatchParameterType ()
		{
			Expression.ElementInit (typeof (Foo).GetMethod ("Add"), new Expression [] {Expression.Constant (1)});
		}

		[Test]
		public void ElementInitToString ()
		{
			var ElementInit = Expression.ElementInit (typeof (Foo).GetMethod ("Add"), new Expression [] {Expression.Constant ("")});

			Assert.AreEqual ("Void Add(System.String)(\"\")", ElementInit.ToString ());
		}

		public class Foo {
			public void Add (string s)
			{
			}

			public void Bar ()
			{
			}
		}

		public static class Bar {
			public static void Add ()
			{
			}
		}
	}
}