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

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// without limitation the rights to use, copy, modify, merge, publish,
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//
// The above copyright notice and this permission notice shall be
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// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
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// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
//
// Authors:
//		Federico Di Gregorio <[email protected]>

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

namespace MonoTests.System.Linq.Expressions
{
	[TestFixture]
	public class ExpressionTest_Quote
	{
		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void Arg1Null ()
		{
			Expression.Quote (null);
		}

		[Test]
		public void Constant ()
		{
			UnaryExpression expr = Expression.Quote (Expression.Constant (1));
			Assert.AreEqual (ExpressionType.Quote, expr.NodeType, "Quote#01");
			Assert.AreEqual (typeof (ConstantExpression), expr.Type, "Quote#02");
			Assert.AreEqual ("1", expr.ToString(), "Quote#03");
		}

		[Test]
		public void CompiledQuote ()
		{
			var quote42 = Expression.Lambda<Func<Expression<Func<int>>>> (
				Expression.Quote (
					Expression.Lambda<Func<int>> (
						42.ToConstant ()))).Compile ();

			var get42 = quote42 ().Compile ();

			Assert.AreEqual (42, get42 ());
		}
	}
}