Sharing metatest logic between unittest and scheduled_test

pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart

Index: pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
diff --git a/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart b/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
index d7127443d0e50b94277bd7c31205ea5660f56779..b34e0759ad31b227d1b58c9f8cc27eab4294298d 100644
--- a/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
+++ b/pkg/scheduled_test/test/scheduled_stream/stream_matcher_test.dart
@@ -10,7 +10,7 @@ import 'package:scheduled_test/scheduled_stream.dart';
 import 'package:scheduled_test/scheduled_test.dart';
 import 'package:scheduled_test/src/utils.dart';
 
-import '../metatest.dart';
+import 'package:metatest/metatest.dart';
 import '../utils.dart';
 
 /// Returns a [ScheduledStream] that asynchronously emits the numbers 1 through
@@ -31,7 +31,9 @@ ScheduledStream createStream() {
   return stream;
 }
 
-void main(_, message) {
+void main() => initTests(_test);
+
+void _test(message) {
   initMetatest(message);
 
   setUpTimeout();