Start pulling pub from its own repo.

sdk/lib/_internal/pub/test/transformer/fails_to_load_an_unconfigurable_transformer_when_config_is_passed_test.dart

-// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS d.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 pub_tests;
-
-import 'package:scheduled_test/scheduled_test.dart';
-
-import '../descriptor.dart' as d;
-import '../test_pub.dart';
-import '../serve/utils.dart';
-
-main() {
-  initConfig();
-
-  withBarbackVersions("any", () {
-     integration("fails to load an unconfigurable transformer when config is "
-         "passed", () {
-       d.dir(appPath, [
-         d.pubspec({
-           "name": "myapp",
-           "transformers": [{"myapp/src/transformer": {'foo': 'bar'}}]
-         }),
-         d.dir("lib", [d.dir("src", [
-           d.file("transformer.dart", REWRITE_TRANSFORMER)
-         ])])
-       ]).create();
-
-       createLockFile('myapp', pkg: ['barback']);
-
-       var pub = startPubServe();
-       pub.stderr.expect(startsWith('No transformers that accept configuration '
-           'were defined in '));
-       pub.shouldExit(1);
-     });
-  });
-}