SkipOnOS.cs

// Copyright (c) Toni Solarin-Sodara
// Licensed under the MIT license. See LICENSE file in the project root for full license information.

using System;
using System.Runtime.InteropServices;

namespace Coverlet.Tests.Xunit.Extensions
{
  public enum OS
  {
    Linux,
    MacOS,
    Windows
  }

  [AttributeUsage(AttributeTargets.Method | AttributeTargets.Class | AttributeTargets.Assembly, AllowMultiple = true)]
  public class SkipOnOSAttribute : Attribute, ITestCondition
  {
    private readonly OS _os;
    private readonly string _reason;

    public SkipOnOSAttribute(OS os, string reason = "") => (_os, _reason) = (os, reason);

    public bool IsMet => _os switch
    {
      OS.Linux => !RuntimeInformation.IsOSPlatform(OSPlatform.Linux),
      OS.MacOS => !RuntimeInformation.IsOSPlatform(OSPlatform.OSX),
      OS.Windows => !RuntimeInformation.IsOSPlatform(OSPlatform.Windows),
      _ => throw new NotSupportedException($"Not supported OS {_os}")
    };

    public string SkipReason => $"OS not supported{(string.IsNullOrEmpty(_reason) ? "" : $", {_reason}")}";
  }
}