using System;
using System.Linq;
using System.Threading.Tasks;
using Cosmos.Debug.Common;
using Cosmos.IL2CPU;
using Microsoft.VisualStudio.TestTools.UnitTesting;

namespace Cosmos.Core.VSTests
{
    [TestClass]
    public class FieldOrderTests
    {
        // the memory stuff requires DataLookupEntry.DataBlock to be the first field
        [TestMethod]
        public unsafe void TestFieldOrderingOfDataLookupEntry()
        {
            ILOp.mPlugManager = new PlugManager(delegate(Exception exception)
                                                {
                                                    throw new Exception("Error: " + exception.Message, exception);
                                                });
            using (var xDbg = new DebugInfo(":memory:", true))
            {
                try
                {
                    var xInfo = ILOp.GetFieldsInfo(typeof(DataLookupEntry), false).OrderBy(i => i.Offset).ToArray();
                    Assert.IsNotNull(xInfo);
                    Assert.AreEqual(3, xInfo.Length);
                    Assert.AreEqual(nameof(DataLookupEntry.DataBlock), xInfo[0].Field.Name);
                }
                finally
                {
                    ILOp.mPlugManager = null;
                }
            }
        }
    }
}