Add appengine/gcloud/mustache dependencies.

pkg/gcloud/test/common_e2e.dart

+// Copyright (c) 2014, 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 gcloud.test.common_e2e;
+
+import 'dart:async';
+import 'dart:io';
+
+import 'package:unittest/unittest.dart';
+import 'package:googleapis_auth/auth_io.dart' as auth;
+import 'package:http/http.dart' as http;
+
+import 'common.dart';
+
+const PROJECT = 'test-project';
+
+// Enviroment variables for specifying the cloud project to use and the
+// location of the service account key for that project.
+const String PROJECT_ENV = 'GCLOUD_E2E_TEST_PROJECT';
+const String SERVICE_KEY_LOCATION_ENV = 'GCLOUD_E2E_TEST_KEY';
+
+// Default project and service key location used when running on the package
+// bot.
+const String DEFAULT_PROJECT = 'dart-gcloud-e2e';
+const String DEFAULT_KEY_LOCATION =
+    'gs://dart-archive-internal/keys/dart-gcloud-e2e.json';
+
+// Used for storage e2e tests:
+//
+// List operations on buckets are eventually consistent. Bucket deletion is
+// also dependent on list operations to ensure the bucket is empty before
+// deletion.
+//
+// So this can make tests flaky. The following delay is introduced as an
+// attempt to account for that.
+const STORAGE_LIST_DELAY = const Duration(seconds: 5);
+
+
+bool onBot() {
+  // When running on the package-bot the current user is chrome-bot.
+  var envName;
+  if (Platform.isWindows) {
+    envName = 'USERNAME';
+  } else {
+    envName = 'USER';
+  }
+  return Platform.environment[envName] == 'chrome-bot';
+}
+
+// Get the service key from the specified location.
+Future<String> serviceKeyJson(String serviceKeyLocation) {
+  if (!serviceKeyLocation.startsWith('gs://')) {
+    throw new Exception('Service key location must start with gs://');
+  }
+  var future;
+  if (onBot()) {
+    future = Process.run(
+        'python', ['third_party/gsutil/gsutil', 'cat', serviceKeyLocation],
+        runInShell: true);
+  } else {
+    var gsutil = Platform.isWindows ? 'gsutil.cmd' : 'gsutil';
+    future = Process.run(gsutil, ['cat', serviceKeyLocation]);
+  }
+  return future.then((result) {
+    if (result.exitCode != 0) {
+      throw new Exception('Failed to run gsutil, ${result.stderr}');
+    }
+    return result.stdout;
+  });
+}
+
+typedef Future AuthCallback(String project, http.Client client);
+
+Future withAuthClient(List<String> scopes,
+                      AuthCallback callback,
+                      {bool trace: false}) {
+  String project = Platform.environment[PROJECT_ENV];
+  String serviceKeyLocation = Platform.environment[SERVICE_KEY_LOCATION_ENV];
+
+  if (!onBot() && (project == null || serviceKeyLocation == null)) {
+    throw new StateError(
+        'Envoronment variables $PROJECT_ENV and $SERVICE_KEY_LOCATION_ENV '
+        'required when not running on the package bot');
+  }
+
+  project = project != null ? project : DEFAULT_PROJECT;
+  serviceKeyLocation =
+      serviceKeyLocation != null ? serviceKeyLocation : DEFAULT_KEY_LOCATION;
+
+  return serviceKeyJson(serviceKeyLocation).then((keyJson) {
+    var creds = new auth.ServiceAccountCredentials.fromJson(keyJson);
+    return auth.clientViaServiceAccount(creds, scopes).then((client) {
+      if (trace) client = new TraceClient(client);
+      return callback(project, client).whenComplete(() => client.close());
+    });
+  });
+}
+
+Future runE2EUnittest(Function callback) {
+  var config = new E2EConfiguration();
+
+  unittestConfiguration = config;
+  callback();
+
+  return config.done;
+}
+
+class E2EConfiguration extends SimpleConfiguration {
+  final Completer _completer = new Completer();
+
+  Future get done => _completer.future;
+
+  onDone(success) {
+    new Future.sync(() {
+      super.onDone(success);
+    }).then((_) => _completer.complete(_))
+    .catchError((error, stack) => _completer.completeError(error, stack));
+  }
+}