Supported versioned patching.

tests/compiler/dart2js/mock_compiler.dart

 // Copyright (c) 2012, 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 mock_compiler;
 
 import "package:expect/expect.dart";
 import 'dart:async';
 import 'dart:collection';
 
@@ skipping 39 matching lines @@
   List<WarningMessage> hints;
   List<WarningMessage> infos;
   List<WarningMessage> crashes;
   /// Expected number of warnings. If `null`, the number of warnings is
   /// not checked.
   final int expectedWarnings;
   /// Expected number of errors. If `null`, the number of errors is not checked.
   final int expectedErrors;
   final Map<String, SourceFile> sourceFiles;
   Node parsedTree;
+  final String testedPatchVersion;
 
   MockCompiler.internal(
       {Map<String, String> coreSource,
        bool enableTypeAssertions: false,
        bool enableMinification: false,
        bool enableConcreteTypeInference: false,
        int maxConcreteTypeSize: 5,
        bool disableTypeInference: false,
        bool analyzeAll: false,
        bool analyzeOnly: false,
        bool emitJavaScript: true,
        bool preserveComments: false,
        // Our unit tests check code generation output that is
        // affected by inlining support.
        bool disableInlining: true,
        bool trustTypeAnnotations: false,
        bool enableEnums: false,
        int this.expectedWarnings,
        int this.expectedErrors,
-       api.CompilerOutputProvider outputProvider})
+       api.CompilerOutputProvider outputProvider,
+       String patchVersion})
       : sourceFiles = new Map<String, SourceFile>(),
+        testedPatchVersion = patchVersion,
         super(enableTypeAssertions: enableTypeAssertions,
               enableMinification: enableMinification,
               enableConcreteTypeInference: enableConcreteTypeInference,
               maxConcreteTypeSize: maxConcreteTypeSize,
               disableTypeInferenceFlag: disableTypeInference,
               analyzeAllFlag: analyzeAll,
               analyzeOnly: analyzeOnly,
               emitJavaScript: emitJavaScript,
               preserveComments: preserveComments,
               trustTypeAnnotations: trustTypeAnnotations,
@@ skipping 17 matching lines @@
     registerSource(JavaScriptBackend.DART_INTERCEPTORS,
                    buildLibrarySource(DEFAULT_INTERCEPTORS_LIBRARY));
     registerSource(JavaScriptBackend.DART_ISOLATE_HELPER,
                    buildLibrarySource(DEFAULT_ISOLATE_HELPER_LIBRARY));
     registerSource(Compiler.DART_MIRRORS,
                    buildLibrarySource(DEFAULT_MIRRORS_LIBRARY));
     registerSource(Compiler.DART_ASYNC,
                    buildLibrarySource(DEFAULT_ASYNC_LIBRARY));
   }
 
+  String get patchVersion {
+    return testedPatchVersion != null ? testedPatchVersion : super.patchVersion;
+  }
+
   /// Initialize the mock compiler with an empty main library.
   Future<Uri> init([String mainSource = ""]) {
     Uri uri = new Uri(scheme: "mock");
     registerSource(uri, mainSource);
     return libraryLoader.loadLibrary(uri)
         .then((LibraryElement library) {
       mainApp = library;
       // We need to make sure the Object class is resolved. When registering a
       // dynamic invocation the ArgumentTypesRegistry eventually iterates over
       // the interfaces of the Object class which would be 'null' if the class
@@ skipping 261 matching lines @@
   MockElement(Element enclosingElement)
       : super('', ElementKind.FUNCTION, Modifiers.EMPTY,
               enclosingElement, false);
 
   get node => null;
 
   parseNode(_) => null;
 
   bool get hasNode => false;
 }