public class SearchValuesContainsAny
{
    private static readonly SearchValues<char> s_values = SearchValues.Create("ABCDabcd1234");

    private string _text = null!;
    private string _textExcept = null!;

    [Params(false, true)]
    public bool Match;

    [Params(16)]
    public int Length;

    [GlobalSetup]
    public void Setup()
    {
        var text = new string('\n', Length).ToCharArray();
        var textExcept = new string('a', Length).ToCharArray();

        if (Match)
        {
            text[0] = 'a';
            textExcept[0] = '\n';
        }

        _text = new string(text);
        _textExcept = new string(textExcept);
    }

    [Benchmark]
    public bool ContainsAny() => _text.AsSpan().ContainsAny(s_values);

    [Benchmark]
    public bool ContainsAnyExcept() => _textExcept.AsSpan().ContainsAnyExcept(s_values);
}