using System;
using System.Collections.Generic;
using System.Linq;
using System.Runtime.CompilerServices;
using NUnit.Framework;

namespace ln.collections.test
{
    public class BenchmarkBTree
    {

        int[] inputs = new int[100000];

        [SetUp]
        public void Setup()
        {
            Random random = new Random();
            HashSet<int> inputs = new HashSet<int>();

            while (inputs.Count < this.inputs.Length)
                inputs.Add(random.Next());
            this.inputs = inputs.ToArray();
        }


        [Test]
        public void Benchmark()
        {
            int iters = 10;
            
            BTree<int> btree = new BTree<int>();
            Meassure(String.Format("BTree({0})", inputs.Length), iters, ()=>{
                foreach (int n in inputs)
                    btree.Add(n);
                
                btree.Clear();
            });

            HashSet<int> hashSet = new HashSet<int>(1000000);
            Meassure(String.Format("HashSet({0})", inputs.Length), iters, ()=>{
                foreach (int n in inputs)
                    hashSet.Add(n);

                hashSet.Clear();
            });

            Dictionary<int, int> dict = new Dictionary<int, int>();
            Meassure(String.Format("Dictionary({0})", inputs.Length), iters, ()=>{
                foreach (int n in inputs)
                    dict.Add(n, n);

                dict.Clear();
            });
        }

        public void Meassure(string name, int iterations, Action action)
        {
            TestContext.Error.WriteLine("------ NEASSURE -------------------");

            while (iterations-->0)
            {
                DateTime start = DateTime.Now;
                action();
                DateTime stop = DateTime.Now;
                TestContext.Error.WriteLine("Meassure: {0}: {1}ms", name, (stop - start).TotalMilliseconds);
            }
        }
        


    }
}