Error Suppression FTW.

pkg/analyzer/test/src/context/context_test.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.context.context_test;
 
 import 'dart:async';
 
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/src/cancelable_future.dart';
@@ skipping 647 matching lines @@
     });
     return pumpEventQueue().then((_) {
       expect(completed, isFalse);
       _performPendingAnalysisTasks();
     }).then((_) => pumpEventQueue()).then((_) {
       expect(completed, isTrue);
     });
   }
 
   void test_configurationData() {
-    var key = new ResultDescriptor('test_key', '');
+    var key = new ResultDescriptor('test_key', 'TEST_DEFAULT');
     var testData = ['test', 'data'];
     context.setConfigurationData(key, testData);
     expect(context.getConfigurationData(key), testData);
-    var unusedKey = new ResultDescriptor('unused_key', '');
-    expect(context.getConfigurationData(unusedKey), null);
+    var unusedKey = new ResultDescriptor('unused_key', 'UNUSED_DEFAULT');
+    expect(context.getConfigurationData(unusedKey), 'UNUSED_DEFAULT');
   }
 
   void test_dispose() {
     expect(context.isDisposed, isFalse);
     context.dispose();
     expect(context.isDisposed, isTrue);
   }
 
   void test_ensureResolvedDartUnits_definingUnit_hasResolved() {
     Source source = addSource('/test.dart', '');
@@ skipping 1902 matching lines @@
   }
 }
 
 class _AnalysisContextImplTest_test_applyChanges_removeContainer
     implements SourceContainer {
   Source libB;
   _AnalysisContextImplTest_test_applyChanges_removeContainer(this.libB);
   @override
   bool contains(Source source) => source == libB;
 }