Switch analysis_server to use 'package:test'.

pkg/analysis_server/test/integration/analysis/test_all.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.integration.analysis.all;
 
-import 'package:unittest/unittest.dart';
+import 'package:test_reflective_loader/test_reflective_loader.dart';
 
 import '../../utils.dart';
 import 'analysis_options_test.dart' as analysis_options_test;
 import 'error_test.dart' as error_test;
 import 'get_errors_after_analysis_test.dart' as get_errors_after_analysis_test;
 import 'get_errors_before_analysis_test.dart'
     as get_errors_before_analysis_test;
 import 'get_errors_nonStandard_sdk.dart' as get_errors_nonStandard_sdk;
 import 'get_hover_test.dart' as get_hover_test;
 import 'highlights_test.dart' as highlights_test;
 import 'highlights_test2.dart' as highlights_test2;
 import 'lint_test.dart' as lint_test;
 import 'navigation_test.dart' as navigation_test;
 import 'occurrences_test.dart' as occurrences_test;
 import 'outline_test.dart' as outline_test;
 import 'overrides_test.dart' as overrides_test;
 import 'package_root_test.dart' as package_root_test;
 import 'reanalyze_concurrent_test.dart' as reanalyze_concurrent_test;
 import 'reanalyze_test.dart' as reanalyze_test;
 import 'update_content_list_test.dart' as update_content_list_test;
 import 'update_content_test.dart' as update_content_test;
 
 /**
  * Utility for manually running all integration tests.
  */
 main() {
   initializeTestEnvironment();
-  group('analysis', () {
+  defineReflectiveSuite(() {
     analysis_options_test.main();
     error_test.main();
     get_errors_after_analysis_test.main();
     get_errors_before_analysis_test.main();
     get_errors_nonStandard_sdk.main();
     get_hover_test.main();
     highlights_test.main();
     highlights_test2.main();
     lint_test.main();
     navigation_test.main();
     occurrences_test.main();
     outline_test.main();
     overrides_test.main();
     package_root_test.main();
     reanalyze_concurrent_test.main();
     reanalyze_test.main();
     update_content_test.main();
     update_content_list_test.main();
-  });
+  }, name: 'analysis');
 }