pkg/shelf: adding copyright to test/test_all.dart

test/test_all.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 'package:unittest/unittest.dart';
 
 import 'cascade_test.dart' as cascade;
 import 'create_middleware_test.dart' as create_middleware;
 import 'hijack_test.dart' as hijack;
 import 'log_middleware_test.dart' as log_middleware;
 import 'message_change_test.dart' as message_change;
 import 'message_test.dart' as message;
 import 'pipeline_test.dart' as pipeline;
 import 'request_test.dart' as request;
 import 'response_test.dart' as response;
 import 'shelf_io_test.dart' as shelf_io;
 
 void main() {
   group('cascade', cascade.main);
   group('create_middleware', create_middleware.main);
   group('hijack', hijack.main);
   group('log_middleware', log_middleware.main);
   group('message_change', message_change.main);
   group('message', message.main);
   group('pipeline', pipeline.main);
   group('request', request.main);
   group('response', response.main);
   group('shelf_io', shelf_io.main);
 }