Get more tests passing on windows

pkg/analyzer/test/generated/analysis_context_factory.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.generated.analysis_context_factory;
 
 import 'dart:collection';
 
 import 'package:analyzer/dart/ast/ast.dart';
 import 'package:analyzer/dart/ast/token.dart';
 import 'package:analyzer/dart/element/element.dart';
 import 'package:analyzer/dart/element/type.dart';
 import 'package:analyzer/file_system/file_system.dart';
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/file_system/physical_file_system.dart';
 import 'package:analyzer/src/context/context.dart';
 import 'package:analyzer/src/dart/element/element.dart';
 import 'package:analyzer/src/dart/element/type.dart';
 import 'package:analyzer/src/dart/sdk/sdk.dart';
 import 'package:analyzer/src/generated/engine.dart';
 import 'package:analyzer/src/generated/resolver.dart';
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source_io.dart';
 import 'package:analyzer/src/generated/testing/ast_factory.dart';
 import 'package:analyzer/src/generated/testing/element_factory.dart';
 import 'package:analyzer/src/generated/testing/test_type_provider.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
-import 'package:analyzer/src/source/source_resource.dart';
 import 'package:analyzer/src/string_source.dart';
 import 'package:test/test.dart';
 
 /**
  * The class `AnalysisContextFactory` defines utility methods used to create analysis contexts
  * for testing purposes.
  */
 class AnalysisContextFactory {
   static String _DART_MATH = "dart:math";
 
@@ skipping 443 matching lines @@
    */
   void _internalSetAnalysisOptions(AnalysisOptions options) {
     super.analysisOptions = options;
   }
 }
 
 /**
  * Helper for creating and managing single [AnalysisContext].
  */
 class AnalysisContextHelper {
-  ResourceProvider resourceProvider;
+  MemoryResourceProvider resourceProvider;
   AnalysisContext context;
 
   /**
    * Creates new [AnalysisContext] using [AnalysisContextFactory].
    */
   AnalysisContextHelper(
-      [AnalysisOptionsImpl options, ResourceProvider provider]) {
+      [AnalysisOptionsImpl options, MemoryResourceProvider provider]) {
     resourceProvider = provider ?? new MemoryResourceProvider();
-    if (options == null) {
-      options = new AnalysisOptionsImpl();
-    }
-    context = AnalysisContextFactory.contextWithCoreAndOptions(options,
+    context = AnalysisContextFactory.contextWithCoreAndOptions(
+        options ?? new AnalysisOptionsImpl(),
         resourceProvider: resourceProvider);
   }
 
   Source addSource(String path, String code) {
-    Source source = new FileSource(resourceProvider.getFile(path));
+    Source source = resourceProvider
+        .getFile(resourceProvider.convertPath(path))
+        .createSource();
     if (path.endsWith(".dart") || path.endsWith(".html")) {
       ChangeSet changeSet = new ChangeSet();
       changeSet.addedSource(source);
       context.applyChanges(changeSet);
     }
     context.setContents(source, code);
     return source;
   }
 
   CompilationUnitElement getDefiningUnitElement(Source source) =>
@@ skipping 52 matching lines @@
 
   void _addLibrary(LibraryMap map, String uri, bool isInternal, String path) {
     SdkLibraryImpl library = new SdkLibraryImpl(uri);
     if (isInternal) {
       library.category = "Internal";
     }
     library.path = path;
     map.setLibrary(uri, library);
   }
 }