// 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.
// Ad
// 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
//
// Authors:
//		Federico Di Gregorio <fog@initd.org>
//		Miguel de Icaza <miguel@novell.com>

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

namespace MonoTests.System.Linq.Expressions
{
	[TestFixture]
	public class ExpressionTest_Power
	{
		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void Arg1Null ()
		{
			Expression.Power (null, Expression.Constant (1.0));
		}

		[Test]
		[ExpectedException (typeof (ArgumentNullException))]
		public void Arg2Null ()
		{
			Expression.Power (Expression.Constant (1.0), null);
		}

		[Test]
		[ExpectedException (typeof (InvalidOperationException))]
		public void ArgTypesDifferent ()
		{
			Expression.Power (Expression.Constant (1), Expression.Constant (2.0));
		}

		[Test]
		[ExpectedException (typeof (InvalidOperationException))]
		public void ArgTypesInt ()
		{
			Expression.Power (Expression.Constant (1), Expression.Constant (2));
		}

		[Test]
		[ExpectedException (typeof (InvalidOperationException))]
		public void ArgTypesFloat ()
		{
			Expression.Power (Expression.Constant ((float)1), Expression.Constant ((float)2));
		}

		[Test]
		public void ArgTypesFloat_OK ()
		{
			BinaryExpression p = Expression.Power (Expression.Constant (1.0), Expression.Constant (2.0));

			Assert.AreEqual (ExpressionType.Power, p.NodeType, "Power#01");
			Assert.AreEqual (typeof (double), p.Type, "Add#02");
		}

		[Test]
		public void TestCompile ()
		{
			ParameterExpression a = Expression.Parameter(typeof(double), "a");
			ParameterExpression b = Expression.Parameter(typeof(double), "b");
			BinaryExpression p = Expression.Power (a, b);

			Expression<Func<double,double,double>> pexpr = Expression.Lambda<Func<double,double,double>> (p, new ParameterExpression [] { a, b });
			Func<double,double,double> compiled = pexpr.Compile ();
			Assert.AreEqual (1, compiled (1, 10));
			Assert.AreEqual (16, compiled (2, 4));
		}

	}
}