Sharing metatest logic between unittest and scheduled_test

pkg/scheduled_test/test/scheduled_server_test.dart

 // Copyright (c) 2013, 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 scheduled_server_test;
 
 import 'dart:async';
 import 'dart:io';
 
 import 'package:http/http.dart' as http;
 import 'package:scheduled_test/scheduled_server.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:scheduled_test/src/mock_clock.dart' as mock_clock;
 import 'package:shelf/shelf.dart' as shelf;
 
-import 'metatest.dart';
+import 'package:metatest/metatest.dart';
 import 'utils.dart';
 
-void main(_, message) {
+void main() => initTests(_test);
+
+void _test(message) {
   initMetatest(message);
 
   setUpTimeout();
 
   expectTestPasses("a server with no handlers does nothing",
       () => new ScheduledServer());
 
   expectServerError("a server with no handlers that receives a request throws "
       "an error", () {
     var server = new ScheduledServer();
@@ skipping 171 matching lines @@
     // when it's wrapped twice it registers as a different exception each time
     // (because it's given an ad-hoc stack trace).
     expect(errors.length, inInclusiveRange(1, 3));
     expect(errors[0].error.toString(), equals(errorMessage));
 
     for (var i = 1; i < errors.length; i++) {
       expect(errors[i].error, new isInstanceOf<HttpException>());
     }
   });
 }