Update charted to 0.4.8 and roll

packages/cli_util/test/cli_util_test.dart

 // Copyright (c) 2015, 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.
 
+import 'dart:io';
+
 import 'package:cli_util/cli_util.dart';
-import 'package:unittest/unittest.dart';
+import 'package:cli_util/src/utils.dart';
+import 'package:test/test.dart';
+
+main() => defineTests();
 
 void defineTests() {
   group('getSdkDir', () {
     test('arg parsing', () {
+      // ignore: deprecated_member_use
       expect(getSdkDir(['--dart-sdk', '/dart/sdk']).path, equals('/dart/sdk'));
+      // ignore: deprecated_member_use
       expect(getSdkDir(['--dart-sdk=/dart/sdk']).path, equals('/dart/sdk'));
     });
+
+    test('finds the SDK without cli args', () {
+      // ignore: deprecated_member_use
+      expect(getSdkDir(), isNotNull);
+    });
+  });
+
+  group('getSdkPath', () {
+    test('sdkPath', () {
+      expect(getSdkPath(), isNotNull);
+    });
+  });
+
+  group('utils', () {
+    test('isSdkDir', () {
+      expect(isSdkDir(new Directory(getSdkPath())), true);
+    });
   });
 }
-
-main() {
-  groupSep = ' | ';
-
-  defineTests();
-}