Split up some slow pub tests and mark some scheduled_test tests as slow.

utils/tests/pub/lish/package_creation_provides_invalid_json_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.
+
+import 'dart:json' as json;
+
+import 'package:scheduled_test/scheduled_test.dart';
+import 'package:scheduled_test/scheduled_server.dart';
+
+import '../descriptor.dart' as d;
+import '../test_pub.dart';
+import 'utils.dart';
+
+main() {
+  initConfig();
+  setUp(d.validPackage.create);
+
+  integration('package creation provides invalid JSON', () {
+    var server = new ScheduledServer();
+    d.credentialsFile(server, 'access token').create();
+    var pub = startPublish(server);
+
+    confirmPublish(pub);
+    handleUploadForm(server);
+    handleUpload(server);
+
+    server.handle('GET', '/create', (request) {
+      request.response.write('{not json');
+      request.response.close();
+    });
+
+    expect(pub.nextErrLine(), completion(equals('Invalid server response:')));
+    expect(pub.nextErrLine(), completion(equals('{not json')));
+    pub.shouldExit(1);
+  });
+}