Use package:test_reflective_loader instead of reflective_tests.

pkg/analysis_server/test/services/correction/strings_test.dart

Index: pkg/analysis_server/test/services/correction/strings_test.dart
diff --git a/pkg/analysis_server/test/services/correction/strings_test.dart b/pkg/analysis_server/test/services/correction/strings_test.dart
index a2b263e3bebe2b0a5e63c67aa9f064c8b865ba67..5f78332470a432aebe9443f1cfa1e1a4ac9cd2be 100644
--- a/pkg/analysis_server/test/services/correction/strings_test.dart
+++ b/pkg/analysis_server/test/services/correction/strings_test.dart
@@ -5,13 +5,12 @@
 library test.services.correction.strings;
 
 import 'package:analysis_server/src/services/correction/strings.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:unittest/unittest.dart' hide isEmpty;
 
-import '../../reflective_tests.dart';
-
 main() {
   groupSep = ' | ';
-  runReflectiveTests(StringsTest);
+  defineReflectiveTests(StringsTest);
 }
 
 @reflectiveTest