using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Buffers;

BenchmarkRunner.Run<SingleString>(args: args);

public class SingleString
{
    private static readonly SearchValues<string> s_values = SearchValues.Create([Needle], StringComparison.Ordinal);
    private static readonly SearchValues<string> s_valuesIC = SearchValues.Create([Needle], StringComparison.OrdinalIgnoreCase);
    private static readonly string s_text_noMatches = new('a', Length);
    private static readonly string s_text_falsePositives = string.Concat(Enumerable.Repeat("Sherlock Holm_s", Length / Needle.Length));

    public const int Length = 100_000;
    public const string Needle = "Sherlock Holmes";

    [Benchmark] public void Throughput() => s_text_noMatches.AsSpan().Contains(Needle, StringComparison.Ordinal);
    [Benchmark] public void SV_Throughput() => s_text_noMatches.AsSpan().ContainsAny(s_values);
    [Benchmark] public void SV_ThroughputIC() => s_text_noMatches.AsSpan().ContainsAny(s_valuesIC);

    [Benchmark] public void FalsePositives() => s_text_falsePositives.AsSpan().Contains(Needle, StringComparison.Ordinal);
    [Benchmark] public void SV_FalsePositives() => s_text_falsePositives.AsSpan().ContainsAny(s_values);
    [Benchmark] public void SV_FalsePositivesIC() => s_text_falsePositives.AsSpan().ContainsAny(s_valuesIC);
}