ILSpy/ICSharpCode.ILSpyCmd.Tests/CliTestRunner.cs

// Copyright (c) 2026 Siegfried Pammer
//
// Permission is hereby granted, free of charge, to any person obtaining a copy of this
// software and associated documentation files (the "Software"), to deal in the Software
// without restriction, including without limitation the rights to use, copy, modify, merge,
// publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons
// to whom the Software is furnished to do so, subject to the following conditions:
//
// The above copyright notice and this permission notice shall be included in all copies or
// substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED,
// INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR
// PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE
// FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR
// OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER
// DEALINGS IN THE SOFTWARE.

using System;
using System.IO;
using System.Threading.Tasks;

namespace ICSharpCode.ILSpyCmd.Tests
{
	/// <summary>
	/// Runs ilspycmd in-process with captured console streams.
	/// </summary>
	internal static class CliTestRunner
	{
		public static async Task<(int ExitCode, string Output, string Error)> RunAsync(params string[] args)
		{
			var originalOut = Console.Out;
			var originalError = Console.Error;
			var stdout = new StringWriter();
			var stderr = new StringWriter();
			try
			{
				Console.SetOut(stdout);
				Console.SetError(stderr);
				int exitCode = await ILSpyCmdProgram.Main(args);
				return (exitCode, stdout.ToString(), stderr.ToString());
			}
			finally
			{
				Console.SetOut(originalOut);
				Console.SetError(originalError);
			}
		}
	}
}