Analysis Options error notifications.

pkg/analyzer/test/source/analysis_options_provider_test.dart

 // Copyright (c) 2015, 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.source.analysis_options_provider;
 
 import 'package:analyzer/file_system/memory_file_system.dart';
 import 'package:analyzer/source/analysis_options_provider.dart';
 import 'package:unittest/unittest.dart';
 import 'package:yaml/yaml.dart';
@@ skipping 25 matching lines @@
     });
     test('test_doesnotexist', () {
       var optionsProvider = new AnalysisOptionsProvider();
       Map<String, YamlNode> options =
           optionsProvider.getOptions(resourceProvider.getFolder('/empty'));
       expect(options.length, equals(0));
     });
   });
   group('AnalysisOptionsProvider', () {
     setUp(() {
-      buildResourceProvider(true);
+      buildResourceProvider(emptyAnalysisOptions: true);
     });
     tearDown(() {
       clearResourceProvider();
     });
     test('test_empty', () {
       var optionsProvider = new AnalysisOptionsProvider();
       Map<String, YamlNode> options =
           optionsProvider.getOptions(resourceProvider.getFolder('/'));
       expect(options, isNotNull);
     });
   });
   group('AnalysisOptionsProvider', () {
     setUp(() {
-      buildResourceProvider(false, true);
+      buildResourceProvider(badAnalysisOptions: true);
     });
     tearDown(() {
       clearResourceProvider();
     });
     test('test_invalid', () {
       var optionsProvider = new AnalysisOptionsProvider();
       bool exceptionCaught = false;
       try {
         Map<String, YamlNode> options =
             optionsProvider.getOptions(resourceProvider.getFolder('/'));
         expect(options, isNotNull);
       } catch (e) {
         exceptionCaught = true;
       }
       expect(exceptionCaught, isTrue);
     });
   });
 }
 
 MemoryResourceProvider resourceProvider;
 
-buildResourceProvider([bool emptyAnalysisOptions = false,
-                       bool badAnalysisOptions = false]) {
+buildResourceProvider({bool emptyAnalysisOptions : false,
+                       bool badAnalysisOptions : false}) {
   resourceProvider = new MemoryResourceProvider();
   resourceProvider.newFolder('/empty');
   resourceProvider.newFolder('/tmp');
   if (badAnalysisOptions) {
     resourceProvider.newFile('/.analysis_options', r''':''');
   } else if (emptyAnalysisOptions) {
-    resourceProvider.newFile('/.analysis_options', r'''''');
+    resourceProvider.newFile('/.analysis_options', r'''#empty''');
   } else {
     resourceProvider.newFile(
       '/.analysis_options',
       r'''
 analyzer:
   ignore:
     - ignoreme.dart
     - 'sdk_ext/**'
 ''');
   }
 }
 
 clearResourceProvider() {
   resourceProvider = null;
 }
 
 emptyResourceProvider() {
   resourceProvider = new MemoryResourceProvider();
 }