Split apart several asynchronous tests to reduce timeouts.

utils/tests/pub/oauth2/with_an_expired_credentials_without_a_refresh_token_authenticates_again_test.dart

+// Copyright (c) 2012, 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 'dart:json' as json;
+
+import 'package:scheduled_test/scheduled_test.dart';
+import 'package:scheduled_test/scheduled_server.dart';
+
+import '../../../pub/io.dart';
+import '../../../pub/utils.dart';
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import 'utils.dart';
+
+main() {
+  integration('with an expired credentials.json without a refresh token, '
+       'authenticates again and saves credentials.json', () {
+    d.validPackage.create();
+
+    var server = new ScheduledServer();
+    d.credentialsFile(server, 'access token',
+        expiration: new DateTime.now().subtract(new Duration(hours: 1)))
+        .create();
+
+    var pub = startPublish(server);
+    confirmPublish(pub);
+
+    expect(pub.nextErrLine(), completion(equals("Pub's authorization to upload "
+          "packages has expired and can't be automatically refreshed.")));
+    authorizePub(pub, server, "new access token");
+
+    server.handle('GET', '/packages/versions/new.json', (request) {
+      expect(request.headers.value('authorization'),
+          equals('Bearer new access token'));
+
+      request.response.close();
+    });
+
+    // After we give pub an invalid response, it should crash. We wait for it to
+    // do so rather than killing it so it'll write out the credentials file.
+    pub.shouldExit(1);
+
+    d.credentialsFile(server, 'new access token').validate();
+  });
+}