Report errors and warnings for hiding elements, issue 572.

client/testing/unittest/shared.dart

 // Copyright (c) 2011, 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.
 
 /**
  * Description text of the current test group. If multiple groups are nested,
  * this will contain all of their text concatenated.
  */
 String _currentGroup = '';
 
@@ skipping 318 matching lines @@
   String stackTrace;
 
   TestCase(this.id, this.description, this.test, this.callbacks);
 
   bool get isComplete() => result != null;
 
   void pass() {
     result = _PASS;
   }
 
-  void fail(String message, String stackTrace) {
+  void fail(String message_, String stackTrace_) {
     result = _FAIL;
-    this.message = message;
-    this.stackTrace = stackTrace;
+    this.message = message_;
+    this.stackTrace = stackTrace_;
   }
 
-  void error(String message, String stackTrace) {
+  void error(String message_, String stackTrace_) {
     result = _ERROR;
-    this.message = message;
-    this.stackTrace = stackTrace;
+    this.message = message_;
+    this.stackTrace = stackTrace_;
   }
 }
 
 typedef void TestFunction();