// Licensed to the .NET Foundation under one or more agreements.
// The .NET Foundation licenses this file to you under the MIT license.
// See the LICENSE file in the project root for more information.
 
#nullable disable
 
using System.IO;
using Microsoft.CodeAnalysis;
using Microsoft.CodeAnalysis.Host;
using Microsoft.CodeAnalysis.Test.Utilities;
using Microsoft.VisualStudio;
using Microsoft.VisualStudio.LanguageServices.CSharp.ProjectSystemShim;
using Xunit;
 
namespace Roslyn.VisualStudio.CSharp.UnitTests.ProjectSystemShim;
 
public sealed class TempPECompilerServiceTests
{
    [Fact]
    public void TempPECompilationWithInvalidReferenceDoesNotCrash()
    {
        var tempPEService = new TempPECompilerService(new TrivialMetadataService());
 
        using var tempRoot = new TempRoot();
        var directory = tempRoot.CreateDirectory();
 
        // This should not crash. Visual inspection of the Dev12 codebase implied we might return
        // S_FALSE in this case, but it wasn't very clear. In any case, it's not expected to throw,m
        // so S_FALSE seems fine.
        var hr = tempPEService.CompileTempPE(
            pszOutputFileName: Path.Combine(directory.Path, "Output.dll"),
            sourceCount: 0,
            fileNames: [],
            fileContents: [],
            optionCount: 1,
            optionNames: ["r"],
            optionValues: [Path.Combine(directory.Path, "MissingReference.dll")]);
 
        Assert.Equal(VSConstants.S_FALSE, hr);
    }
 
    private sealed class TrivialMetadataService : IMetadataService
    {
        public PortableExecutableReference GetReference(string resolvedPath, MetadataReferenceProperties properties)
        {
            return MetadataReference.CreateFromFile(resolvedPath, properties);
        }
    }
}