Switch 'analyzer' to 'package:test' and test_reflective_loader ^0.1.0.

pkg/analyzer/test/src/task/html_work_manager_test.dart

Index: pkg/analyzer/test/src/task/html_work_manager_test.dart
diff --git a/pkg/analyzer/test/src/task/html_work_manager_test.dart b/pkg/analyzer/test/src/task/html_work_manager_test.dart
index 55698a09422da95d42c579a640620fbac27991f4..e245bae9534952e03002679b7f2f73ecaab7031d 100644
--- a/pkg/analyzer/test/src/task/html_work_manager_test.dart
+++ b/pkg/analyzer/test/src/task/html_work_manager_test.dart
@@ -23,16 +23,18 @@ import 'package:analyzer/task/dart.dart';
 import 'package:analyzer/task/general.dart';
 import 'package:analyzer/task/html.dart';
 import 'package:analyzer/task/model.dart';
+import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
 import 'package:typed_mock/typed_mock.dart';
-import 'package:unittest/unittest.dart';
 
 import '../../generated/test_support.dart';
 import '../../utils.dart';
 
 main() {
   initializeTestEnvironment();
-  defineReflectiveTests(HtmlWorkManagerTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(HtmlWorkManagerTest);
+  });
 }
 
 @reflectiveTest