Tons of errors if building for AOT (IL3050)

[rodrigovaras]

I'm porting many xUnit test into TUnit for the whole purpose of enabling AOT testing.
When I build my unit test for AOT i get many msbuild errors (that can be supressed) like this:

Binding.Model net9.0 succeeded (0.4s) → artifacts\bin\Binding.Model\debug_net9.0\Teksoft.Binding.Model.dll
Binding.Core net9.0 succeeded (0.5s) → artifacts\bin\Binding.Core\debug_net9.0\Teksoft.Binding.Core.dll
Binding.Mock.Test succeeded (0.2s) → artifacts\bin\Binding.Mock.Test\debug\Teksoft.Binding.Mock.Test.dll
Binding.Core.Test failed with 153 error(s) (33.6s) → test\artifacts\bin\Binding.Core.Test\debug_win-x64\Teksoft.Binding.Core.Test.dll
ILC : AOT analysis error IL3050: TUnit.SourceGenerated.<BindingTest_06054ffcd3014f66b2e6a48ef6c3dd64_Generated>F56AB95644891240B5A9CDB79558D9E1D87B85B2920919123C46334919BE9EEA4__BindingTest.<>c__DisplayClass2_1.b__0(): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.
ILC : AOT analysis error IL3050: TUnit.SourceGenerated.<BindingTest_a35d90e75525436994564935f5a0d5a8_Generated>F570D2CCCFB64BDB85DD9E28A7353E4C7CED39F399E1BB4761E7F1A3AA04086B1__BindingTest.<>c__DisplayClass2_1.b__0(): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead

I suspect it could be caused by TUnit generated code ?
Would be great to fix this for AOT generation.

Using .NET 9

[rodrigovaras]

Suppressing IL3050 shows me another one:

ILC : error IL3000: TUnit.Core.TestContext.OutputDirectory.get: 'System.Reflection.Assembly.Location.get' always returns an empty string for assemblies embedded in a single-file app. If the path to the app directory is needed, consider calling 'System.AppContext.BaseDirectory'.

[thomhurst]

Can you try v0.12.11 ?

[rodrigovaras]

Thanks a lot for your quick response.
I tried the new package and it seems that it fixed some of the errors but not all, now i'm getting IL3050 on other lines ?
error IL3050: TUnit.SourceGenerated.<BindingTest_160b1b9aaed44bd98fbe0a0a1940d296_Generated>FDE7E2FA00B970CD12565B1FB31E234D4BB416C85205B10F81D4AC2CA1B60156C__BindingTest.<>c__DisplayClass2_1.b__0(): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.

[thomhurst]

Are you able to create a small repro? I'm not seeing it on my machine

[rodrigovaras]

Any tip on how can i see the generated code ? It seems that after the error I can't see it on disk the offending path on the error.
I moved to v0.12.11 and I clean the project by deleting the obj*
My unit test project has several project references so i can't easily upload a zip file.
BTW, I don't use [Matrix] attribute

[thomhurst]

You can see generated code by placing this in your csproj and rebuilding:

    <PropertyGroup>
        <EmitCompilerGeneratedFiles>true</EmitCompilerGeneratedFiles>
        <CompilerGeneratedFilesOutputPath>SourceGeneratedViewer</CompilerGeneratedFilesOutputPath>
    </PropertyGroup>

[rodrigovaras]

I scope down the problem to this:
public class BindingTest
{
[Test]
public async Task SimpleValueTest()
{
var model = new
{
prop1 = 200
};

    var bar = new
    {
        model
    };

    var foo = new
    {
        bar
    };

    using var propertyBinding = new PropertyBinding(foo, "bar.model.prop1");
    await Assert.That(propertyBinding.Value).IsEqualTo(200);
}

internal enum CustomKey
{
    Key1,
    Key2,
    Key3,
}

}

Removing or adding the enum CustomKey make the problem appear/disappear. It seems that the type even if not being used cause the code generation

[rodrigovaras]

I can see the code generated file but no reference into Enum.GetValues()

[thomhurst]

I still can't reprocate it

[rodrigovaras]

Attached a trivial project with TUnit that generate warning IL3050

C:\Users\rodrigov\source\repos\TUnitTest>dotnet publish -c Debug -r win-x64
Restore complete (1.2s)
TUnitTest succeeded with 5 warning(s) (23.2s) → TUnitTest\bin\Debug\net9.0\win-x64\publish
C:\Users\rodrigov\source\repos\TUnitTest\TUnitTest\obj\Debug\net9.0\win-x64\TUnit.Core.SourceGenerator\TUnit.Core.SourceGenerator.CodeGenerators.TestsGenerator\MyTestClass-129113562c9f4231ac214a5a5a75fc3b.Generated.cs(30): AOT analysis warning IL3050: TUnit.SourceGenerated.<MyTestClass_129113562c9f4231ac214a5a5a75fc3b_Generated>F8A7604BAA1E57C258A95C07CA5AD199C30E7388A712E54D03793FFD0FACEC1DB__MyTestClass.Tests0(String): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.
C:\Users\rodrigov\source\repos\TUnitTest\TUnitTest\obj\Debug\net9.0\win-x64\TUnit.Core.SourceGenerator\TUnit.Core.SourceGenerator.CodeGenerators.TestsGenerator\MyTestClass-129113562c9f4231ac214a5a5a75fc3b.Generated.cs(41): AOT analysis warning IL3050: TUnit.SourceGenerated.<MyTestClass_129113562c9f4231ac214a5a5a75fc3b_Generated>F8A7604BAA1E57C258A95C07CA5AD199C30E7388A712E54D03793FFD0FACEC1DB__MyTestClass.<>c.b__2_1(): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.
C:\Users\rodrigov\source\repos\TUnitTest\TUnitTest\obj\Debug\net9.0\win-x64\TUnit.Core.SourceGenerator\TUnit.Core.SourceGenerator.CodeGenerators.TestsGenerator\MyTestClass-129113562c9f4231ac214a5a5a75fc3b.Generated.cs(74): AOT analysis warning IL3050: TUnit.SourceGenerated.<MyTestClass_129113562c9f4231ac214a5a5a75fc3b_Generated>F8A7604BAA1E57C258A95C07CA5AD199C30E7388A712E54D03793FFD0FACEC1DB__MyTestClass.Tests0(String): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.
C:\Users\rodrigov\source\repos\TUnitTest\TUnitTest\obj\Debug\net9.0\win-x64\TUnit.Core.SourceGenerator\TUnit.Core.SourceGenerator.CodeGenerators.TestsGenerator\MyTestClass-129113562c9f4231ac214a5a5a75fc3b.Generated.cs(80): AOT analysis warning IL3050: TUnit.SourceGenerated.<MyTestClass_129113562c9f4231ac214a5a5a75fc3b_Generated>F8A7604BAA1E57C258A95C07CA5AD199C30E7388A712E54D03793FFD0FACEC1DB__MyTestClass.Tests0(String): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.
C:\Users\rodrigov\source\repos\TUnitTest\TUnitTest\obj\Debug\net9.0\win-x64\TUnit.Core.SourceGenerator\TUnit.Core.SourceGenerator.CodeGenerators.TestsGenerator\MyTestClass-129113562c9f4231ac214a5a5a75fc3b.Generated.cs(74): AOT analysis warning IL3050: TUnit.SourceGenerated.<MyTestClass_129113562c9f4231ac214a5a5a75fc3b_Generated>F8A7604BAA1E57C258A95C07CA5AD199C30E7388A712E54D03793FFD0FACEC1DB__MyTestClass.<>c__DisplayClass2_1.b__0(): Using member 'System.Enum.GetValues(Type)' which has 'RequiresDynamicCodeAttribute' can break functionality when AOT compiling. It might not be possible to create an array of the enum type at runtime. Use the GetValues overload or the GetValuesAsUnderlyingType method instead.

Build succeeded with 5 warning(s) in 25.3s

C

TUnitTest.zip

[thomhurst]

@rodrigovaras can you try v0.13.15

[rodrigovaras]

@thomhurst i'm impressed on your excellent support. I move into 0.13.5 and all the other warnings disappear, but now the ILC build setps is giving me 2 new errors:
Binding.Mock.Test succeeded (0.5s) → artifacts\bin\Binding.Mock.Test\debug\Teksoft.Binding.Mock.Test.dll
Binding.Expression.Test failed with 3 error(s) (42.0s) → test\artifacts\bin\Binding.Expression.Test\debug_win-x64\Teksoft.Binding.Expression.Test.dll
ILC : Trim analysis error IL2026: TUnit.Core.SourceGeneratedMethodInformation.PrintMembers(StringBuilder): Using member 'TUnit.Core.SourceGeneratedMethodInformation.ReflectionInformation.get' which has 'RequiresUnreferencedCodeAttribute' can break functionality when trimming application code. Reflection API.
C:\Users\rodrigov.nuget\packages\runtime.win-x64.microsoft.dotnet.ilcompiler\9.0.2\framework\System.Linq.Parallel.dll : error IL3053: Assembly 'System.Linq.Parallel' produced AOT analysis warnings.
C:\Users\rodrigov.nuget\packages\microsoft.dotnet.ilcompiler\9.0.2\build\Microsoft.NETCore.Native.targets(317,5): er

I assume this can't be reproduced by the simple .zip project I send it before it seems that my more elaborated project reveal the problem.

Another similar project on my solution that has AOT enabled also complain on the same issue.