#region License
/* 
 * Copyright (C) 1999-2024 John Källén.
 *
 * This program is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; either version 2, or (at your option)
 * any later version.
 *
 * This program is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program; see the file COPYING.  If not, write to
 * the Free Software Foundation, 675 Mass Ave, Cambridge, MA 02139, USA.
 */
#endregion

using Moq;
using NUnit.Framework;
using Reko.Core;
using Reko.Core.Hll.C;
using System.Collections.Generic;

namespace Reko.UnitTests.Core.Hll.C
{
    [TestFixture]
    public class CConstantEvaluatorTests
    {
        private CConstantEvaluator eval;
        private Dictionary<string, int> constants;

        [SetUp]
        public void Setup()
        {
            var platform = new Mock<IPlatform>();
            platform.Setup(p => p.GetBitSizeFromCBasicType(CBasicType.Int)).Returns(32);
            this.constants = new Dictionary<string,int>();
            eval = new CConstantEvaluator(platform.Object, constants);
        }

        [Test]
        public void CCEval_Constant()
        {
            var exp = new ConstExp(3);
            var result = exp.Accept(eval);
            Assert.AreEqual(3, result);
        }

        [Test]
        public void CCEval_Add()
        {
            var exp =
                new CBinaryExpression(
                    CTokenType.Plus,
                    new ConstExp(1),
                    new ConstExp(2));
            var result = exp.Accept(eval);
            Assert.AreEqual(3, result);
        }

        [Test]
        public void CCEval_Shr()
        {
            var exp = new CBinaryExpression(
                CTokenType.Shr,
                new ConstExp(4),
                new ConstExp(2));
            var result = exp.Accept(eval);
            Assert.AreEqual(1, result);
        }
    }
}
