Default arg support continued (flutter-intellij#553).

pkg/analysis_server/test/services/completion/dart/local_reference_contributor_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.services.completion.contributor.dart.local_ref;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart' as protocol
     show Element, ElementKind;
 import 'package:analysis_server/plugin/protocol/protocol.dart'
     hide Element, ElementKind;
@@ skipping 4602 matching lines @@
     addTestSource('''
 bool hasLength() => false;
 void main() {h^}''');
     await computeSuggestions();
 
     assertSuggestFunction('hasLength', 'bool',
         relevance: DART_RELEVANCE_LOCAL_FUNCTION, defaultArgListString: null);
   }
 
   test_ArgDefaults_function_with_optional_positional() async {
-    _addMetaPackageSource();
+    addMetaPackageSource();
     addTestSource('''
 import 'package:meta/meta.dart';
 
 bool foo(int bar, [bool boo, int baz]) => false;
 void main() {h^}''');
     await computeSuggestions();
 
     assertSuggestFunction('foo', 'bool',
         relevance: DART_RELEVANCE_LOCAL_FUNCTION, defaultArgListString: 'bar');
   }
 
   test_ArgDefaults_function_with_required_named() async {
-    _addMetaPackageSource();
+    addMetaPackageSource();
     addTestSource('''
 import 'package:meta/meta.dart';
 
 bool foo(int bar, {bool boo, @required int baz}) => false;
 void main() {h^}''');
     await computeSuggestions();
 
     assertSuggestFunction('foo', 'bool',
         relevance: DART_RELEVANCE_LOCAL_FUNCTION,
         defaultArgListString: 'bar, baz: null');
   }
 
-  void _addMetaPackageSource() {
-    addPackageSource(
-        'meta',
-        'meta.dart',
-        r'''
-library meta;
+  test_ArgDefaults_method_with_required_named() async {
+    addMetaPackageSource();
+    addTestSource('''
+import 'package:meta/meta.dart';
 
-const Required required = const Required();
+class A {
+  bool foo(int bar, {bool boo, @required int baz}) => false;
+  baz() {
+    f^
+  }
+}''');
+    await computeSuggestions();
 
-class Required {
-  final String reason;
-  const Required([this.reason]);
-}
-''');
+    assertSuggestMethod('foo', 'A', 'bool',
+        relevance: DART_RELEVANCE_LOCAL_METHOD,
+        defaultArgListString: 'bar, baz: null');
   }
 }