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

pkg/analyzer/test/src/source/source_resource_test.dart

Index: pkg/analyzer/test/src/source/source_resource_test.dart
diff --git a/pkg/analyzer/test/src/source/source_resource_test.dart b/pkg/analyzer/test/src/source/source_resource_test.dart
index 8079c17660652a89cc076deab93d5b462f9412f3..5e436f109803f000af7c10e22e62ac414275db63 100644
--- a/pkg/analyzer/test/src/source/source_resource_test.dart
+++ b/pkg/analyzer/test/src/source/source_resource_test.dart
@@ -12,15 +12,17 @@ import 'package:analyzer/src/generated/sdk.dart';
 import 'package:analyzer/src/generated/source.dart';
 import 'package:analyzer/src/generated/utilities_dart.dart';
 import 'package:analyzer/src/source/source_resource.dart';
+import 'package:test/test.dart';
 import 'package:test_reflective_loader/test_reflective_loader.dart';
-import 'package:unittest/unittest.dart';
 
 import '../../utils.dart';
 import '../context/mock_sdk.dart';
 
 main() {
   initializeTestEnvironment();
-  defineReflectiveTests(FileSourceTest);
+  defineReflectiveSuite(() {
+    defineReflectiveTests(FileSourceTest);
+  });
 }
 
 @reflectiveTest