anchor.diff:      addSource('/home/test/lib/a.dart', 'class A { }');
       addTestSource('''
           import 'a.dart';
  -        /// some dartdoc
  -        class C {^ foo;} ''');
  +        class C {
  +          /// some dartdoc
  +          ^ foo;
  +        } ''');
   
       await computeSuggestions();
       assertSuggestClass('A');
  
positive.code:     addSource('/home/test/lib/a.dart', 'class A { }');
      addTestSource('''
          import 'a.dart';
          /* comment */
          class C {^ foo;} ''');
  
      await computeSuggestions();
      assertSuggestClass('A');
  
negative.code:     addSource('/home/test/lib/a.dart', 'class A { }');
      addTestSource('''
          import 'a.dart';
          class C {
            // comment
            ^ foo;
          } ''');
  
      await computeSuggestions();
      assertSuggestClass('A');
  