Record dependencies and invalidate results.

pkg/analyzer/test/src/context/mock_sdk.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.src.mock_sdk;
 
 import 'package:analyzer/file_system/file_system.dart' as resource;
 import 'package:analyzer/file_system/memory_file_system.dart' as resource;
-import 'package:analyzer/src/generated/engine.dart';
+import 'package:analyzer/src/context/cache.dart';
+import 'package:analyzer/src/context/context.dart';
+import 'package:analyzer/src/generated/engine.dart'
+    show AnalysisEngine, ChangeSet;
 import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 
 class MockSdk implements DartSdk {
   static const _MockSdkLibrary LIB_CORE = const _MockSdkLibrary('dart:core',
       '/lib/core/core.dart', '''
 library dart.core;
 
 import 'dart:async';
 
@@ skipping 148 matching lines @@
     LIB_COLLECTION,
     LIB_CONVERT,
     LIB_MATH,
     LIB_HTML,
   ];
 
   final resource.MemoryResourceProvider provider =
       new resource.MemoryResourceProvider();
 
   /**
-   * The [AnalysisContext] which is used for all of the sources.
+   * The [AnalysisContextImpl] which is used for all of the sources.
    */
-  InternalAnalysisContext _analysisContext;
+  AnalysisContextImpl _analysisContext;
 
   MockSdk() {
     LIBRARIES.forEach((_MockSdkLibrary library) {
       provider.newFile(library.path, library.content);
     });
   }
 
   @override
-  AnalysisContext get context {
+  AnalysisContextImpl get context {
     if (_analysisContext == null) {
-      _analysisContext = new SdkAnalysisContext();
+      _analysisContext = new _SdkAnalysisContext(this);
       SourceFactory factory = new SourceFactory([new DartUriResolver(this)]);
       _analysisContext.sourceFactory = factory;
       ChangeSet changeSet = new ChangeSet();
       for (String uri in uris) {
         Source source = factory.forUri(uri);
         changeSet.addedSource(source);
       }
       _analysisContext.applyChanges(changeSet);
     }
     return _analysisContext;
@@ skipping 104 matching lines @@
   bool get isInternal => throw unimplemented;
 
   @override
   bool get isShared => throw unimplemented;
 
   @override
   bool get isVmLibrary => throw unimplemented;
 
   UnimplementedError get unimplemented => new UnimplementedError();
 }
+
+/**
+ * An [AnalysisContextImpl] that only contains sources for a Dart SDK.
+ */
+class _SdkAnalysisContext extends AnalysisContextImpl {
+  final DartSdk sdk;
+
+  _SdkAnalysisContext(this.sdk);
+
+  @override
+  AnalysisCache createCacheFromSourceFactory(SourceFactory factory) {
+    if (factory == null) {
+      return super.createCacheFromSourceFactory(factory);
+    }
+    return new AnalysisCache(<CachePartition>[
+      AnalysisEngine.instance.partitionManager_new.forSdk(sdk)
+    ]);
+  }
+}