Repository: dotnet/roslyn
File: src/Compilers/Core/SdkTaskTests/CscTests.cs (C#)

Code before:
﻿// 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.

using System.IO;
using System.Runtime.InteropServices;
using Microsoft.CodeAnalysis.BuildTasks.UnitTests;
using Roslyn.Test.Utilities;
using Xunit;

namespace Microsoft.CodeAnalysis.BuildTasks.Sdk.UnitTests;

public sealed class CscTests
{
    private static string RspFilePath => Path.Combine(Path.GetDirectoryName(typeof(ManagedCompiler).Assembly.Location)!, "csc.rsp");

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/79907")]
    public void StdLib()
    {
        var csc = new Csc
        {
            Sources = MSBuildUtil.CreateTaskItems("test.cs"),
        };

        AssertEx.Equal($"/sdkpath:{RuntimeEnvironment.GetRuntimeDirectory()} @{RspFilePath} /out:test.exe test.cs", csc.GenerateResponseFileContents());
    }

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/79907")]
    public void StdLib_DisableSdkPath()
    {
        var csc = new Csc
        {
            Sources = MSBuildUtil.CreateTaskItems("test.cs"),
            DisableSdkPath = true,
        };

        AssertEx.Equal($"/sdkpath:{RuntimeEnvironment.GetRuntimeDirectory()} @{RspFilePath} /nosdkpath /out:test.exe test.cs", csc.GenerateResponseFileContents());
    }
}


Review comment (suggestion):
>csc.GenerateResponseFileContents() [](http://example.com/codeflow?start=116&length=34)

Consider covering "noconfig" behavior as well

Code after:
﻿// 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.

using System.IO;
using System.Runtime.InteropServices;
using Microsoft.CodeAnalysis.BuildTasks.UnitTests;
using Roslyn.Test.Utilities;
using Xunit;

namespace Microsoft.CodeAnalysis.BuildTasks.Sdk.UnitTests;

public sealed class CscTests
{
    private static string RspFilePath => Path.Combine(Path.GetDirectoryName(typeof(ManagedCompiler).Assembly.Location)!, "csc.rsp");

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/79907")]
    public void StdLib()
    {
        var csc = new Csc
        {
            Sources = MSBuildUtil.CreateTaskItems("test.cs"),
        };

        AssertEx.Equal($"/sdkpath:{RuntimeEnvironment.GetRuntimeDirectory()} @{RspFilePath} /out:test.exe test.cs", csc.GenerateResponseFileContents());
    }

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/79907")]
    public void StdLib_DisableSdkPath()
    {
        var csc = new Csc
        {
            Sources = MSBuildUtil.CreateTaskItems("test.cs"),
            DisableSdkPath = true,
        };

        AssertEx.Equal($"/sdkpath:{RuntimeEnvironment.GetRuntimeDirectory()} @{RspFilePath} /nosdkpath /out:test.exe test.cs", csc.GenerateResponseFileContents());
    }

    [Fact, WorkItem("https://github.com/dotnet/roslyn/issues/79907")]
    public void StdLib_NoConfig()
    {
        var csc = new Csc
        {
            Sources = MSBuildUtil.CreateTaskItems("test.cs"),
            NoConfig = true,
        };

        AssertEx.Equal($"/sdkpath:{RuntimeEnvironment.GetRuntimeDirectory()} /out:test.exe test.cs", csc.GenerateResponseFileContents());
    }