anchor.diff:  import 'package:unittest/unittest.dart';
   
   main() {
  -  group('Filter ->', () {
  -    group('Parsing ->', () {
  +  group('Filter', () {
  +    group('Parsing', () {
         test('min date', () {
           var dateString = '2014-03-17T05:19:03.000Z';
           var filters = Filter.parseAll("mindate:$dateString");
  
positive.code:       });
      });
  
      group('Inverted ->', () {
        test('logger name match', () {
          var logRecord = makeLogRecord(logger: 'denton');
          var filter = Filter.parseAll('-logger:denton')[0];
  
negative.code:       });
      });
  
      group('Exact matching', () {
        test('no match', () {
          // This would match if it were a regex.
          var logRecord = makeLogRecord(message: 'Kagamine Rin');
  