Install barback from a hosted source in all tests.

test/run/mode_test.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.
 
 import '../descriptor.dart' as d;
 import '../test_pub.dart';
 
 const TRANSFORMER = """
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 
 class DartTransformer extends Transformer {
   final BarbackSettings _settings;
 
   DartTransformer.asPlugin(this._settings);
 
   String get allowedExtensions => '.in';
 
   void apply(Transform transform) {
     transform.addOutput(new Asset.fromString(
         new AssetId(transform.primaryInput.id.package, "bin/script.dart"),
         "void main() => print('\${_settings.mode.name}');"));
   }
 }
 """;
 
 main() {
    integration('runs a local script with customizable modes', () {
+     serveBarback();
+
      d.dir(appPath, [
        d.pubspec({
          "name": "myapp",
-         "transformers": ["myapp/src/transformer"]
+         "transformers": ["myapp/src/transformer"],
+         "dependencies": {"barback": "any"}
        }),
        d.dir("lib", [d.dir("src", [
          d.file("transformer.dart", TRANSFORMER),
          d.file("primary.in", "")
        ])])
      ]).create();
 
-     createLockFile('myapp', pkg: ['barback']);
+     pubGet();
 
      // By default it should run in debug mode.
      var pub = pubRun(args: ["bin/script"]);
      pub.stdout.expect("debug");
      pub.shouldExit();
 
      // A custom mode should be specifiable.
      pub = pubRun(args: ["--mode", "custom-mode", "bin/script"]);
      pub.stdout.expect("custom-mode");
      pub.shouldExit();
    });
 
    integration('runs a dependency script with customizable modes', () {
+     serveBarback();
+
      d.dir("foo", [
        d.pubspec({
          "name": "foo",
          "version": "1.2.3",
-         "transformers": ["foo/src/transformer"]
+         "transformers": ["foo/src/transformer"],
+         "dependencies": {"barback": "any"}
        }),
        d.dir("lib", [d.dir("src", [
          d.file("transformer.dart", TRANSFORMER),
          d.file("primary.in", "")
        ])])
      ]).create();
 
      d.appDir({"foo": {"path": "../foo"}}).create();
 
-     createLockFile('myapp', sandbox: ['foo'], pkg: ['barback']);
+     pubGet();
 
      // By default it should run in release mode.
      var pub = pubRun(args: ["foo:script"]);
      pub.stdout.expect("release");
      pub.shouldExit();
 
      // A custom mode should be specifiable.
      pub = pubRun(args: ["--mode", "custom-mode", "foo:script"]);
      pub.stdout.expect("custom-mode");
      pub.shouldExit();
    });
 }