Support for pubspec based contexts in subfolders.

pkg/analysis_server/test/mocks.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 mocks;
 
 import 'dart:async';
 import 'dart:io';
 
 @MirrorsUsed(targets: 'mocks', override: '*')
@@ skipping 324 matching lines @@
 /**
  * A mock [PackageMapProvider].
  */
 class MockPackageMapProvider implements PackageMapProvider {
   /**
    * Package map that will be returned by the next call to [computePackageMap].
    */
   Map<String, List<resource.Folder>> packageMap = <String, List<resource.Folder>>{};
 
   /**
+   * Package maps that will be returned by the next call to [computePackageMap].
+   */
+  Map<String, Map<String, List<resource.Folder>>> packageMaps = null;
+
+  /**
    * Dependency list that will be returned by the next call to [computePackageMap].
    */
   Set<String> dependencies = new Set<String>();
 
   @override
   PackageMapInfo computePackageMap(resource.Folder folder) {
+    if (packageMaps != null) {
+      return new PackageMapInfo(packageMaps[folder.path], dependencies);
+    }
     return new PackageMapInfo(packageMap, dependencies);
   }
 }