Replace @ReflectiveTestCase() with @reflectiveTest.

pkg/analysis_server/test/services/index/store/collection_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.src.index.store.collection;
 
 import 'package:analysis_server/src/services/index/store/collection.dart';
 import 'package:unittest/unittest.dart';
 
 import '../../../reflective_tests.dart';
 
 
 main() {
   groupSep = ' | ';
   runReflectiveTests(_IntArrayToIntMapTest);
   runReflectiveTests(_IntToIntSetMapTest);
 }
 
 
-@ReflectiveTestCase()
+@reflectiveTest
 class _IntArrayToIntMapTest {
   IntArrayToIntMap map = new IntArrayToIntMap();
 
   void test_put_get() {
     map[<int>[1, 2, 3]] = 1;
     map[<int>[2, 3, 4, 5]] = 2;
     expect(map[<int>[0]], isNull);
     expect(map[<int>[1, 2, 3]], 1);
     expect(map[<int>[2, 3, 4, 5]], 2);
   }
 }
 
 
-@ReflectiveTestCase()
+@reflectiveTest
 class _IntToIntSetMapTest {
   IntToIntSetMap map = new IntToIntSetMap();
 
   void test_add_duplicate() {
     map.add(1, 0);
     map.add(1, 0);
     List<int> set = map.get(1);
     expect(set, hasLength(1));
   }
 
@@ skipping 25 matching lines @@
     expect(map.length, 1);
     map.add(1, 11);
     map.add(1, 12);
     expect(map.length, 1);
     map.add(2, 20);
     expect(map.length, 2);
     map.add(2, 21);
     expect(map.length, 2);
   }
 }