Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/services/refactoring/naming_conventions_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.refactoring.naming_conventions;
 
 import 'package:analysis_server/plugin/protocol/protocol.dart'
     show RefactoringProblemSeverity;
 import 'package:analysis_server/src/services/refactoring/naming_conventions.dart';
 import 'package:analysis_server/src/services/refactoring/refactoring.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../utils.dart';
 import 'abstract_refactoring.dart';
 
 main() {
   initializeTestEnvironment();
-  defineReflectiveTests(NamingConventionsTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(NamingConventionsTest);
+  });
 }
 
 @reflectiveTest
 class NamingConventionsTest extends RefactoringTest {
   @override
   Refactoring get refactoring => null;
 
   void test_validateClassName_doesNotStartWithLowerCase() {
     assertRefactoringStatus(
         validateClassName("newName"), RefactoringProblemSeverity.WARNING,
@@ skipping 628 matching lines @@
   void test_validateVariableName_OK_middleUnderscore() {
     assertRefactoringStatusOK(validateVariableName("new_name"));
   }
 
   void test_validateVariableName_trailingBlanks() {
     assertRefactoringStatus(
         validateVariableName("newName "), RefactoringProblemSeverity.FATAL,
         expectedMessage: "Variable name must not start or end with a blank.");
   }
 }