[Fact]
public void AssemblyIsRetargetable()
{
    string syntax = @"
using System.Reflection;

[assembly: AssemblyFlags(AssemblyNameFlags.Retargetable)]
";

    CSharpCompilationOptions options = new(OutputKind.DynamicallyLinkedLibrary);
    IEnumerable<MetadataReference> defaultReferences = new[]
    {
        MetadataReference.CreateFromFile(typeof(object).Assembly.Location),
    };

    CSharpCompilation compilation = CSharpCompilation.Create(
                                        "foo",
                                        new[] { CSharpSyntaxTree.ParseText(syntax) },
                                        defaultReferences,
                                        options);

    Assert.Empty(compilation.GetDiagnostics());

    IAssemblySymbol assembly = compilation.Assembly;

    Assert.True(assembly.Identity.IsRetargetable);
}