using System;
using System.Linq;

using CodeJam.Collections;
using CodeJam.PerfTests;
using CodeJam.PerfTests.Configs;

using JetBrains.Annotations;

using NUnit.Framework;

namespace CodeJam
{
    [TestFixture(Category = CompetitionHelpers.PerfTestCategory)]
    [Explicit(CompetitionHelpers.TemporarilyExcludedReason)]
    [PublicAPI]
    public class SequencePerfTests
    {
        public readonly int Count = 100 * 1000;

        [Test]
        public void RunSequencePerfTests() => Competition.Run(this, AssemblyCompetitionConfig.RunConfig);

        [CompetitionBenchmark(17.03, 23.40)]
        public long TestSequence()
        {
            long result = 0;
            foreach (var i in Sequence.Create(0, i => i < Count, i => i + 1))
            {
                result += i;
            }

            return result;
        }

        [CompetitionBenchmark(11.15, 14.13)]
        public long TestRange()
        {
            long result = 0;
            foreach (var i in Enumerable.Range(0, Count))
            {
                result += i;
            }

            return result;
        }

        [CompetitionBaseline]
        public long TestRaw()
        {
            long result = 0;
            for (int i = 0; i < Count; i++)
            {
                result += i;
            }

            return result;
        }
    }
}