using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Running;
using System.Runtime.CompilerServices;
using System.Text;

public class Program
{
    static void Main(string[] args) => BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);

    private StringBuilder _sb = new StringBuilder();
    private object _int = 12345;

    [Benchmark]
    public void AppendFormat_Small_Strings()
    {
        _sb.Clear();
        _sb.AppendFormat("{0}: {1}", "key", "value");
    }

    [Benchmark]
    public void AppendFormat_Medium_Strings()
    {
        _sb.Clear();
        _sb.AppendFormat("Key: {0}, Value: {1}", "key", "value");
    }

    [Benchmark]
    public void AppendFormat_Large_Strings()
    {
        _sb.Clear();
        _sb.AppendFormat("This is a test to see what happens when there's more text {0} the individual {1} that need to be {2} in.", "between", "arguments", "filled");
    }

    [Benchmark]
    public void AppendFormat_Varying()
    {
        _sb.Clear();
        _sb.AppendFormat("{0:X}.{1,10:X4}.{2,-4}.{3:d10}", _int, _int, _int, _int);
    }

    [Benchmark]
    public string Format_Small_Strings()
    {
        return string.Format("{0}: {1}", "key", "value");
    }

    [Benchmark]
    public string Format_Medium_Strings()
    {
        return string.Format("Key: {0}, Value: {1}", "key", "value");
    }

    [Benchmark]
    public string Format_Large_Strings()
    {
        return string.Format("This is a test to see what happens when there's more text {0} the individual {1} that need to be {2} in.", "between", "arguments", "filled");
    }

    [Benchmark]
    public string Format_Varying()
    {
        return string.Format("{0:X}.{1,10:X4}.{2,-4}.{3:d10}", _int, _int, _int, _int);
    }
}