Add renames in output when using the mirror helper library.

tests/compiler/dart2js/mirror_helper2_test.dart

+// Copyright (c) 2013, 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.
+
+import "package:expect/expect.dart";
+import 'memory_compiler.dart' show compilerFor;
+import '../../../sdk/lib/_internal/compiler/implementation/apiimpl.dart' show
+    Compiler;
+import
+    '../../../sdk/lib/_internal/compiler/implementation/elements/elements.dart'
+show
+    Elements;
+import
+    '../../../sdk/lib/_internal/compiler/implementation/tree/tree.dart'
+show
+    Node;
+import
+    '../../../sdk/lib/_internal/compiler/implementation/dart_backend/dart_backend.dart';
+import
+    '../../../sdk/lib/_internal/compiler/implementation/mirror_renamer/mirror_renamer.dart';
+
+main() {
+  testWithMirrorHeplerLibrary(minify: true);
+  testWithMirrorHeplerLibrary(minify: false);
+  testWithoutMirrorHelperLibrary(minify: true);
+  testWithoutMirrorHelperLibrary(minify: false);
+}
+
+Compiler runCompiler({useMirrorHelperLibrary: false, minify: false}) {
+  List<String> options = ['--output-type=dart'];
+  if (minify) {
+    options.add('--minify');
+  }
+  Compiler compiler = compilerFor(MEMORY_SOURCE_FILES, options: options);
+  DartBackend backend = compiler.backend;
+  backend.useMirrorHelperLibrary = useMirrorHelperLibrary;
+  MirrorRenamer.inverseRenames = null;
+  compiler.runCompiler(Uri.parse('memory:main.dart'));
+  return compiler;
+}
+
+void testWithMirrorHeplerLibrary({bool minify}) {
+  Compiler compiler = runCompiler(useMirrorHelperLibrary: true, minify: minify);
+
+  DartBackend backend = compiler.backend;
+  Map<Node, String> renames = backend.renames;
+  Map<String, String> inverseRenames = MirrorRenamer.inverseRenames;
+
+  Expect.isFalse(inverseRenames.isEmpty);
+
+  for (Node n in renames.keys) {
+    if (inverseRenames.containsKey(renames[n])) {
+      Expect.equals(inverseRenames[renames[n]], n.toString());
+    }
+  }
+
+  String output = compiler.assembledCode;
+  String match =
+      "${MirrorRenamer.MIRROR_HELPER_CLASS_FULLY_QUALIFIED_NAME}."
+      "${MirrorRenamer.MIRROR_HELPER_ADD_RENAME_FUNCTION}";
+  Iterable i = match.allMatches(output);
+
+  Expect.isTrue(output.indexOf('main(){$match') != -1);
+  Expect.equals(inverseRenames.length, i.length);
+}
+
+void testWithoutMirrorHelperLibrary({bool minify}) {
+  Compiler compiler =
+      runCompiler(useMirrorHelperLibrary: false, minify: minify);
+
+  Expect.equals(null, MirrorRenamer.inverseRenames);
+
+  String output = compiler.assembledCode;
+  String match =
+      "${MirrorRenamer.MIRROR_HELPER_CLASS_FULLY_QUALIFIED_NAME}."
+      "${MirrorRenamer.MIRROR_HELPER_ADD_RENAME_FUNCTION}";
+  Expect.equals(-1, output.indexOf(match));
+}
+
+const MEMORY_SOURCE_FILES = const <String, String> {
+  'main.dart': """
+import 'dart:mirrors';
+
+
+class Foo {
+  noSuchMethod(Invocation invocation) {
+    MirrorSystem.getName(invocation.memberName);
+  }
+}
+
+void main() {
+  new Foo().fisk();
+}
+"""};