Fix a bug with skipped groups.

test/runner/expanded_reporter_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.
 
 @TestOn("vm")
 
 import 'package:scheduled_test/descriptor.dart' as d;
 import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 
@@ skipping 233 matching lines @@
           test('skip 1', () {}, skip: true);
           test('skip 2', () {}, skip: true);
           test('skip 3', () {}, skip: true);""",
           """
           +0: skip 1
           +0 ~1: skip 2
           +0 ~2: skip 3
           +0 ~3: All tests skipped.""");
     });
 
+    test("displays a skipped group", () {
+      _expectReport("""
+          group('skip', () {
+            test('test 1', () {});
+            test('test 2', () {});
+            test('test 3', () {});
+          }, skip: true);""",
+          """
+          +0: skip
+          +0 ~1: All tests skipped.""");
+    });
+
     test("runs skipped tests along with successful tests", () {
       _expectReport("""
           test('skip 1', () {}, skip: true);
           test('success 1', () {});
           test('skip 2', () {}, skip: true);
           test('success 2', () {});""",
           """
           +0: skip 1
           +0 ~1: success 1
           +1 ~1: skip 2
@@ skipping 69 matching lines @@
     // Un-indent the expected string.
     var indentation = expected.indexOf(new RegExp("[^ ]"));
     expected = expected.split("\n").map((line) {
       if (line.isEmpty) return line;
       return line.substring(indentation);
     }).join("\n");
 
     expect(actual, equals(expected));
   });
 }