using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;

BenchmarkSwitcher.FromAssembly(typeof(Tests).Assembly).Run(args);

[MemoryDiagnoser(false)]
[HideColumns("Job", "Error", "StdDev", "Median", "RatioSD")]
public partial class Tests
{
    private IEnumerable<int> _data;

    [Params(0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)]
    public int Source { get; set; }

    [GlobalSetup]
    public void Setup()
    {
        IEnumerable<int> data = Source >= 10 ? Iterations(100) : Enumerable.Range(0, 100).ToArray();
        _data = (Source % 10) switch
        {
            0 => data,
            1 => data.Select(i => i),
            2 => data.Where(i => i % 2 == 0).Select(i => i),
            3 => data.Order(),
            4 => data.OrderBy(i => i).Select(i => i),
            5 => data.Skip(20).Take(10),
            6 => data.Reverse(),
            7 => data.SelectMany(i => new int[] { i }),
            8 => data.Distinct(),
            9 => data.Concat(data),
            _ => throw new NotSupportedException()
        };
    }

    [Benchmark]
    public bool Any() => _data.Any();

    private static IEnumerable<int> Iterations(int count)
    {
        for (int i = 0; i < count; i++) yield return i;
    }
}