anchor.diff:    }
   
     test_const_topLevel_typedList_imported() {
  -    shouldCompareConstValues = true;
       addLibrarySource('/a.dart', 'class C {}');
       checkLibrary(r'''
   import 'a.dart';
  
positive.code:       VariableElementImpl original, String desc) {
      compareElements(resynthesized, original, desc);
      compareTypes(resynthesized.type, original.type, desc);
      // TODO(scheglov) enable for any ConstVariableElement
      if (shouldCompareConstValues) {
        if (original is ConstVariableElement) {
          compareConstantExpressions(resynthesized.constantInitializer,
              original.constantInitializer, desc);
        }
      }
    }
  
  
negative.code:   }
  
    test_const_parameterDefaultValue_initializingFormal_functionTyped() {
      checkLibrary(r'''
  class C {
    final x;
  