anchor.diff:    }
   
     test_const_reference_unresolved_prefix1() async {
  -    shouldCompareLibraryElements = false;
       var library = await checkLibrary(r'''
   class C {}
   const V = C.foo;
  
positive.code:   }
  
    test_const_invokeConstructor_unnamed_unresolved() async {
      shouldCompareLibraryElements = false;
      var library = await checkLibrary(r'''
  const V = const C();
  ''', allowErrors: true);
  
negative.code:   }
  
    test_inferredType_implicitCreation_prefixed() async {
      addLibrarySource('/foo.dart', '''
  class A {
    A();
  