Possible fix for 28038

pkg/analyzer/test/src/context/builder_test.dart

 // Copyright (c) 2016, 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 analyzer.test.src.context.context_builder_test;
 
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
+import 'package:analyzer/source/package_map_resolver.dart';
 import 'package:analyzer/src/command_line/arguments.dart';
 import 'package:analyzer/src/context/builder.dart';
 import 'package:analyzer/src/context/source.dart';
 import 'package:analyzer/src/generated/bazel.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/lint/linter.dart';
 import 'package:analyzer/src/lint/registry.dart';
 import 'package:analyzer/src/services/lint.dart';
@@ skipping 305 matching lines @@
 
     AnalysisOptionsImpl options = new AnalysisOptionsImpl();
     SourceFactoryImpl factory =
         builder.createSourceFactory(projectPath, options);
     expect(factory.resolvers,
         contains(predicate((r) => r is BazelFileUriResolver)));
     expect(factory.resolvers,
         contains(predicate((r) => r is BazelPackageUriResolver)));
   }
 
+  void test_createSourceFactory_bazelWorkspace_withPackagesFile() {
+    String _p(String path) => resourceProvider.convertPath(path);
+
+    String projectPath = _p('/workspace/my/module');
+    resourceProvider.newFile(_p('/workspace/WORKSPACE'), '');
+    resourceProvider.newFolder(_p('/workspace/bazel-bin'));
+    resourceProvider.newFolder(_p('/workspace/bazel-genfiles'));
+    resourceProvider.newFolder(projectPath);
+    resourceProvider.newFile(_p(path.join(projectPath, '.packages')), '');
+
+    AnalysisOptionsImpl options = new AnalysisOptionsImpl();
+    SourceFactoryImpl factory =
+        builder.createSourceFactory(projectPath, options);
+    expect(factory.resolvers,
+        contains(predicate((r) => r is ResourceUriResolver)));
+    expect(factory.resolvers,
+        contains(predicate((r) => r is PackageMapUriResolver)));
+  }
+
   void test_createSourceFactory_noProvider_packages_embedder_extensions() {
     String rootPath = resourceProvider.convertPath('/root');
     Folder rootFolder = resourceProvider.getFolder(rootPath);
     createDefaultSdk(rootFolder);
     String projectPath = pathContext.join(rootPath, 'project');
     String packageFilePath = pathContext.join(projectPath, '.packages');
     String packageA = pathContext.join(rootPath, 'pkgs', 'a');
     String embedderPath = pathContext.join(packageA, '_embedder.yaml');
     String packageB = pathContext.join(rootPath, 'pkgs', 'b');
     String extensionPath = pathContext.join(packageB, '_sdkext');
@@ skipping 510 matching lines @@
 class MockLintRule implements LintRule {
   final String _name;
 
   MockLintRule(this._name);
 
   @override
   String get name => _name;
 
   noSuchMethod(Invocation invocation) => super.noSuchMethod(invocation);
 }