Check PackageMapUriResolver constructor arguments.

pkg/analysis_server/test/context_manager_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.
 
 library test.context.directory.manager;
 
 import 'package:analysis_server/src/context_manager.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/package_map_provider.dart';
@@ skipping 175 matching lines @@
     resourceProvider.newFile('$subProjectA/pubspec.yaml', 'pubspec');
     resourceProvider.newFile('$subProjectB/pubspec.yaml', 'pubspec');
     resourceProvider.newFile(rootFile, 'library root;');
     resourceProvider.newFile(subProjectA_file, 'library a;');
     resourceProvider.newFile(subProjectB_file, 'library b;');
     // configure package maps
     packageMapProvider.packageMaps = {
       subProjectA: {
         'foo': [resourceProvider.newFolder('/package/foo')]
       },
-      subProjectA: {
+      subProjectB: {
         'bar': [resourceProvider.newFolder('/package/bar')]
       },
     };
     // set roots
     manager.setRoots(<String>[root], <String>[], <String, String>{});
     manager.assertContextPaths([root, subProjectA, subProjectB]);
     // verify files
     manager.assertContextFiles(root, [rootFile]);
     manager.assertContextFiles(subProjectA, [subProjectA_file]);
     manager.assertContextFiles(subProjectB, [subProjectB_file]);
     // verify package maps
-    _checkPackageMap(root, equals(packageMapProvider.packageMaps[root]));
+    _checkPackageMap(root, isNull);
     _checkPackageMap(
         subProjectA,
         equals(packageMapProvider.packageMaps[subProjectA]));
     _checkPackageMap(
         subProjectB,
         equals(packageMapProvider.packageMaps[subProjectB]));
   }
 
   void test_setRoots_addPackageRoot() {
     String packagePathFoo = '/package1/foo';
@@ skipping 530 matching lines @@
       _checkPackageMap(projPath, isNull);
     });
   }
 
   /**
    * Verify that package URI's for source files in [path] will be resolved
    * using a package map matching [expectation].
    */
   void _checkPackageMap(String path, expectation) {
     UriResolver resolver = manager.currentContextPackageUriResolvers[path];
-    expect(resolver, new isInstanceOf<PackageMapUriResolver>());
-    PackageMapUriResolver packageMapUriResolver = resolver;
-    expect(packageMapUriResolver.packageMap, expectation);
+    Map<String, List<Folder>> packageMap =
+        resolver is PackageMapUriResolver ? resolver.packageMap : null;
+    expect(packageMap, expectation);
   }
 
   /**
    * Verify that package URI's for source files in [path] will be resolved
    * using a package root maching [expectation].
    */
   void _checkPackageRoot(String path, expectation) {
     UriResolver resolver = manager.currentContextPackageUriResolvers[path];
     expect(resolver, new isInstanceOf<PackageUriResolver>());
     PackageUriResolver packageUriResolver = resolver;
@@ skipping 77 matching lines @@
     currentContextFilePaths.remove(path);
     currentContextPackageUriResolvers.remove(path);
   }
 
   @override
   void updateContextPackageUriResolver(Folder contextFolder,
       UriResolver packageUriResolver) {
     currentContextPackageUriResolvers[contextFolder.path] = packageUriResolver;
   }
 }