// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
 
using System;
using System.IO;
using System.Linq;
using Microsoft.Build.Shared;
using Shouldly;
using Xunit;
using Xunit.Abstractions;
 
#nullable disable
 
namespace Microsoft.Build.UnitTests
{
    public class DebugUtils_Tests
    {
        [Fact]
        public void DumpExceptionToFileShouldWriteInDebugDumpPath()
        {
            var exceptionFilesBefore = Directory.GetFiles(ExceptionHandling.DebugDumpPath, "MSBuild_*failure.txt");
 
            string[] exceptionFiles = null;
 
            try
            {
                ExceptionHandling.DumpExceptionToFile(new Exception("hello world"));
                exceptionFiles = Directory.GetFiles(ExceptionHandling.DebugDumpPath, "MSBuild_*failure.txt");
            }
            finally
            {
                exceptionFilesBefore.ShouldNotBeNull();
                exceptionFiles.ShouldNotBeNull();
                (exceptionFiles.Length - exceptionFilesBefore.Length).ShouldBe(1);
 
                var exceptionFile = exceptionFiles.Except(exceptionFilesBefore).Single();
                File.ReadAllText(exceptionFile).ShouldContain("hello world");
                File.Delete(exceptionFile);
            }
        }
    }
}