pkg/intl: cleanup after message extraction test

pkg/intl/test/message_extraction/message_extraction_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.
 
 library message_extraction_test;
 
 import 'package:unittest/unittest.dart';
 import 'dart:io';
 import 'dart:async';
 import 'package:pathos/path.dart' as path;
@@ skipping 43 matching lines @@
 main() {
   test("Test round trip message extraction, translation, code generation, "
       "and printing", () {
     deleteGeneratedFiles();
     return extractMessages(null).then((result) {
       return generateTranslationFiles(result);
     }).then((result) {
       return generateCodeFromTranslation(result);
     }).then((result) {
       return runGeneratedCode(result);
-    }).then(verifyResult);
+    }).then(verifyResult)
+    .whenComplete(deleteGeneratedFiles);
   });
 }
 
 void deleteGeneratedFiles() {
   var files = [dir('intl_messages.json'), dir('translation_fr.json'),
-      dir('messages_fr.dart'), dir('message_de_DE.dart'),
-      dir('messages_all.dart')];
+      dir('messages_fr.dart'), dir('messages_de_DE.dart'),
+      dir('translation_de_DE.json'), dir('messages_all.dart')];
   files.map((name) => new File(name)).forEach((x) {
     if (x.existsSync()) x.deleteSync();});
 }
 
 /**
  * Run the process with the given list of filenames, which we assume
  * are in dir() and need to be qualified in case that's not our working
  * directory.
  */
 Future<ProcessResult> run(ProcessResult previousResult, List<String> filenames)
@@ skipping 131 matching lines @@
   verify("Diese Methode ist nicht eine Lambda");
   verify("Dies ergibt sich aus einer statischen Methode");
   verify("This is missing some translations");
   verify("Antike griechische Galgenmännchen Zeichen: 𐅆𐅇");
 //  verify("Die Sache ist, well");
 //  expect("Einer der knifflige Dinge ist der Plural");
 //  expect("Zu den kniffligen Dinge Pluralformen");
   verify("Escapes: ");
   verify("\r\f\b\t\v.");
 }