Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/analysis/get_hover_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.domain.analysis.hover;
 
 import 'dart:async';
 
 import 'package:analysis_server/src/protocol.dart';
 import 'package:unittest/unittest.dart';
 
 import '../analysis_abstract.dart';
 import '../reflective_tests.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(AnalysisHoverTest);
 }
 
 
-@ReflectiveTestCase()
+@reflectiveTest
 class AnalysisHoverTest extends AbstractAnalysisTest {
   Future<HoverInformation> prepareHover(String search) {
     int offset = findOffset(search);
     return prepareHoverAt(offset);
   }
 
   Future<HoverInformation> prepareHoverAt(int offset) {
     return waitForTasksFinished().then((_) {
       Request request =
           new AnalysisGetHoverParams(testFile, offset).toRequest('0');
@@ skipping 270 matching lines @@
 library my.library;
 main() {
   // nothing
 }
 ''');
     return prepareHover('nothing').then((HoverInformation hover) {
       expect(hover, isNull);
     });
   }
 }