using System;
using System.Diagnostics;
using System.IO;

namespace TestingApplication
{
    class Program
    {
		static StreamWriter _streamWriter = new StreamWriter("bench.txt");
    	private const int _numberOfIterationPerTest = 1000000000;
    	private const int _numberOfTestExecutions = 10;

        static void Main(string[] args)
        {

            // With Strings
            //ObjCreationAndAccessInLoopWithStrings();
            //AccessOnlyInLoopWithStrings();
            //ObjCreationOnlyInLoopWithStrings();

            // With POCO
            ObjCreationAndAccessInLoop();
            AccessOnlyInLoop();
            ObjCreationOnlyInLoop();

        	_streamWriter.Close();

        }

        private static void ObjCreationOnlyInLoop()
        {
			_streamWriter.WriteLine();
			_streamWriter.WriteLine("obj creation in loop, no access at all:");
            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Poco objPoco = new Poco();


                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadOnlyField objReadOnlyField = new ReadOnlyField(objPoco);
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadWriteField objReadWriteField = new ReadWriteField(objPoco);
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }

        private static void ObjCreationOnlyInLoopWithStrings()
        {
            _streamWriter.WriteLine();
            _streamWriter.WriteLine("Strings -- obj creation in loop, no access at all:");

            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadOnlyField objReadOnlyField = new ReadOnlyField("I'm in class ReadOnlyField");
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadWriteField objReadWriteField = new ReadWriteField("I'm in class ReadWriteField");
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }

        private static void AccessOnlyInLoop()
        {
            _streamWriter.WriteLine();
            _streamWriter.WriteLine("access in loop, obj creation at beginning");
            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Poco objPoco = new Poco();
                ReadOnlyField objReadOnlyField = new ReadOnlyField(objPoco);
                ReadWriteField objReadWriteField = new ReadWriteField(objPoco);


                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    Poco myCopyOfObjPoco = objReadOnlyField.ObjPoco;
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    Poco myCopyOfObjPoco = objReadWriteField.ObjPoco;
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }

        private static void AccessOnlyInLoopWithStrings()
        {
            _streamWriter.WriteLine();
            _streamWriter.WriteLine("Strings -- access in loop, obj creation at beginning");
            ReadOnlyField objReadOnlyField = new ReadOnlyField("I'm in class ReadOnlyField");
            ReadWriteField objReadWriteField = new ReadWriteField("I'm in class ReadWriteField");

            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    string test = objReadOnlyField.Message;
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    string test = objReadWriteField.Message;
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }

        private static void ObjCreationAndAccessInLoop()
        {
            _streamWriter.WriteLine();
            _streamWriter.WriteLine("Obj creation & access in loop");
            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Poco objPoco = new Poco();


                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadOnlyField objReadOnlyField = new ReadOnlyField(objPoco);
                    Poco myCopyOfObjPoco = objReadOnlyField.ObjPoco;
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadWriteField objReadWriteField = new ReadWriteField(objPoco);
                    Poco myCopyOfObjPoco = objReadWriteField.ObjPoco;
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }

        private static void ObjCreationAndAccessInLoopWithStrings()
        {
            _streamWriter.WriteLine();
            _streamWriter.WriteLine("Strings -- Obj creation & access in loop");
            for (int j = 0; j < _numberOfTestExecutions; j++)
            {
                Stopwatch watch = new Stopwatch();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadOnlyField objReadOnlyField = new ReadOnlyField("I'm in class ReadOnlyField");
                    string test = objReadOnlyField.Message;
                }
                watch.Stop();
                _streamWriter.Write(watch.ElapsedMilliseconds + ";");

                watch.Reset();
                watch.Start();
                for (int i = 0; i < _numberOfIterationPerTest; i++)
                {
                    ReadWriteField objReadWriteField = new ReadWriteField("I'm in class ReadWriteField");
                    string test = objReadWriteField.Message;
                }
                watch.Stop();
                _streamWriter.WriteLine(watch.ElapsedMilliseconds);
            }
        }
    }


    class ReadOnlyField
    {
        private readonly Poco _ObjPoco;
        private readonly string _message;


        public ReadOnlyField(Poco objPoco)
        {
            _ObjPoco = objPoco;
        }

        public ReadOnlyField(string message)
        {
            _message = message;
        }

        public Poco ObjPoco
        {
            get { return _ObjPoco; }
        }


        public string Message
        {
            get { return _message; }
        }
    }


    class ReadWriteField
    {
        private Poco _ObjPoco;
        private string _message;


        public ReadWriteField(Poco objPoco)
        {
            _ObjPoco = objPoco;
        }

        public ReadWriteField(string message)
        {
            _message = message;
        }

        public Poco ObjPoco
        {
            get { return _ObjPoco; }
        }


        public string Message
        {
            get { return _message; }
        }
    }

    class Poco
    {
        public string Message
        {
            get { return "I'm in obj Poco"; }
        }
    }
}