Sharing metatest logic between unittest and scheduled_test

pkg/scheduled_test/test/descriptor/directory_test.dart

Index: pkg/scheduled_test/test/descriptor/directory_test.dart
diff --git a/pkg/scheduled_test/test/descriptor/directory_test.dart b/pkg/scheduled_test/test/descriptor/directory_test.dart
index 60fa44c7a9916328e2332a38cd0ca06ae360dd2e..d6e029bb5eebc97ddd785da4707097c589779194 100644
--- a/pkg/scheduled_test/test/descriptor/directory_test.dart
+++ b/pkg/scheduled_test/test/descriptor/directory_test.dart
@@ -9,10 +9,12 @@ import 'package:path/path.dart' as path;
 import 'package:scheduled_test/descriptor.dart' as d;
 import 'package:scheduled_test/scheduled_test.dart';
 
-import '../metatest.dart';
+import 'package:metatest/metatest.dart';
 import 'utils.dart';
 
-void main(_, message) {
+void main() => initTests(_test);
+
+void _test(message) {
   initMetatest(message);
 
   setUpTimeout();