pkg/csslib: types, fixes, cleanup

pkg/csslib/test/selector_test.dart

 // Copyright (c) 2012, the Dart project authors.  Please see the AUTHORS file
 // for details. All rights reserved. Use of this source code is governed by a
 // BSD-style license that can be found in the LICENSE file.
 
 library selector_test;
 
 import 'package:unittest/unittest.dart';
 import 'testing.dart';
 import 'package:csslib/parser.dart';
-import 'package:csslib/visitor.dart';
 
 void testSelectorSuccesses() {
   var errors = [];
   var selectorAst = selector('#div .foo', errors: errors);
   expect(errors.isEmpty, true, reason: errors.toString());
   expect('#div .foo', compactOuptut(selectorAst));
 
   // Valid selectors for class names.
   selectorAst = selector('.foo', errors: errors..clear());
   expect(errors.isEmpty, true, reason: errors.toString());
@@ skipping 37 matching lines @@
   expect(errors[0].toString(), r'''
 error :1:9: name must start with a alpha character, but found a number
 .foobar .1a-story .xyzzy
         ^^''');
 }
 
 main() {
   test('Valid Selectors', testSelectorSuccesses);
   test('Invalid Selectors', testSelectorFailures);
 }