FileSystemAbstractionBenchmarks.cs

using System;
using System.IO;
using System.IO.Abstractions.Benchmarks.Support;
using BenchmarkDotNet.Attributes;
using BenchmarkDotNet.Order;

namespace System.IO.Abstractions.Benchmarks;

//[SimpleJob(launchCount: 3, warmupCount: 10, targetCount: 30)]
[RPlotExporter]
[MemoryDiagnoser]
[Orderer(summaryOrderPolicy: SummaryOrderPolicy.FastestToSlowest)]
[RankColumn]
public class FileSystemAbstractionBenchmarks
{
    #region Members
    /// <summary>
    /// FileSupport type to avoid counting object initialisation on the benchmark
    /// </summary>
    private FileSupport _fileSupport;
    private DirectorySupport _directorySupport;
    #endregion

    #region CTOR's
    public FileSystemAbstractionBenchmarks()
    {
        // Initialize file support
        _fileSupport = new FileSupport();
        _directorySupport = new DirectorySupport();
    }
    #endregion

    #region File IsFile
    [Benchmark]
    public void FileExists_DotNet() => FileSupportStatic.IsFile(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile));

    [Benchmark]
    public void FileExists_Abstraction() => _fileSupport.IsFile(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile));
    #endregion

    #region Directory Exists
    [Benchmark]
    public void DirectoryExists_DotNet() => DirectorySupportStatic.Exists(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile));

    [Benchmark]
    public void DirectoryExists_Abstraction() => _directorySupport.Exists(Environment.GetFolderPath(Environment.SpecialFolder.UserProfile));
    #endregion
}