Update charted to 0.4.8 and roll

packages/petitparser/test/test_test.dart

-library petitparser.test.test_test;
-
-import 'package:test/test.dart';
-
-import 'package:petitparser/petitparser.dart';
-import 'package:petitparser/test.dart';
-
-void main() {
-  group('accept', () {
-    test('success', () {
-      var matcher = accept(char('a'));
-      var state = new Map();
-      expect(matcher.matches('a', state), isTrue);
-      expect(state, isEmpty);
-      var description = new StringDescription();
-      matcher.describe(description);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" accepts input');
-    });
-    test('failure', () {
-      var matcher = accept(char('a'));
-      var state = new Map();
-      expect(matcher.matches('b', state), isFalse);
-      expect(state, isNot(isEmpty));
-      var description = new StringDescription();
-      matcher.describeMismatch('b', description, state, false);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" produces "Failure[1:1]: "a" expected" which is not accepted');
-    });
-  });
-  group('parse', () {
-    test('success', () {
-      var matcher = parse(char('a'), 'a');
-      var state = new Map();
-      expect(matcher.matches('a', state), isTrue);
-      expect(state, isEmpty);
-      var description = new StringDescription();
-      matcher.describe(description);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" '
-          'accepts \'a\'');
-    });
-    test('failure', () {
-      var matcher = parse(char('a'), 'a');
-      var state = new Map();
-      expect(matcher.matches('b', state), isFalse);
-      expect(state, isNot(isEmpty));
-      var description = new StringDescription();
-      matcher.describeMismatch('b', description, state, false);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" '
-          'produces "Failure[1:1]: "a" expected" which is not accepted');
-    });
-    test('matcher', () {
-      var matcher = parse(char('a'), 'b');
-      var state = new Map();
-      expect(matcher.matches('a', state), isFalse);
-      expect(state, isNot(isEmpty));
-      var description = new StringDescription();
-      matcher.describeMismatch('a', description, state, false);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" '
-          'produces "Success[1:2]: a" which parse result is different.\n'
-          'Expected: b\n  Actual: a\n          ^\n Differ at offset 0');
-    });
-    test('position', () {
-      var matcher = parse(char('a'), 'a', 0);
-      var state = new Map();
-      expect(matcher.matches('a', state), isFalse);
-      expect(state, isNot(isEmpty));
-      var description = new StringDescription();
-      matcher.describeMismatch('a', description, state, false);
-      expect(description.toString(), '"Instance of \'CharacterParser\'["a" expected]" '
-      'produces "Success[1:2]: a" that consumes input to 1 instead of 0');
-    });
-  });
-}