Make barback more package-aware.

pkg/barback/test/asset_graph/source_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.
 
 library barback.test.asset_graph.source_test;
 
 import 'dart:async';
 
 import 'package:barback/barback.dart';
 import 'package:barback/src/asset_graph.dart';
@@ skipping 26 matching lines @@
     // Sources must be explicitly made visible to barback by calling
     // updateSources() on them. It isn't enough for the provider to be able
     // to provide it.
     //
     // This lets you distinguish between sources that you want to be primaries
     // and the larger set of inputs that those primaries are allowed to pull in.
     expectNoAsset("app|foo.txt");
   });
 
   test("gets a source asset if not transformed", () {
-    initGraph(["app|foo.txt"], [
+    initGraph(["app|foo.txt"], {"app": [
       [new RewriteTransformer("nottxt", "whatever")]
-    ]);
+    ]});
 
     updateSources(["app|foo.txt"]);
     expectAsset("app|foo.txt");
   });
 
   test("doesn't get a removed source", () {
     initGraph(["app|foo.txt"]);
 
     updateSources(["app|foo.txt"]);
     expectAsset("app|foo.txt");
 
     schedule(() {
       removeSources(["app|foo.txt"]);
     });
 
     expectNoAsset("app|foo.txt");
   });
 
   test("collapses redundant updates", () {
     var transformer = new RewriteTransformer("blub", "blab");
-    initGraph(["app|foo.blub"], [[transformer]]);
+    initGraph(["app|foo.blub"], {"app": [[transformer]]});
 
     schedule(() {
       // Make a bunch of synchronous update calls.
       updateSources(["app|foo.blub"]);
       updateSources(["app|foo.blub"]);
       updateSources(["app|foo.blub"]);
       updateSources(["app|foo.blub"]);
     });
 
     expectAsset("app|foo.blab", "foo.blab");
@@ skipping 20 matching lines @@
     schedule(() {
       removeSources(["app|foo.txt"]);
       updateSources(["app|foo.txt"]);
     });
 
     expectAsset("app|foo.txt");
   });
 
   test("restarts a build if a source is updated while sources are loading", () {
     var transformer = new RewriteTransformer("txt", "out");
-    initGraph(["app|foo.txt", "app|other.bar"], [[transformer]]);
+    initGraph(["app|foo.txt", "app|other.bar"], {"app": [[transformer]]});
 
     // Run the whole graph so all nodes are clean.
     updateSources(["app|foo.txt", "app|other.bar"]);
     expectAsset("app|foo.out", "foo.out");
     expectAsset("app|other.bar");
 
     buildShouldSucceed();
 
     // Make the provider slow to load a source.
     pauseProvider();
@@ skipping 11 matching lines @@
     resumeProvider();
 
     buildShouldSucceed();
     waitForBuild();
 
     schedule(() {
       expect(transformer.numRuns, equals(2));
     });
   });
 }