fix test

Author: buenaflor

flutter/lib/src/navigation/sentry_navigator_observer.dart

@@ -277,7 +277,6 @@ class SentryNavigatorObserver extends RouteObserver<PageRoute<dynamic>> {
   Future<void> _startTimeToDisplayTracking(Route<dynamic>? route) async {
     _completedDisplayTracking = Completer<void>();
     String? routeName = _currentRouteName;
-
     if (routeName == null) return;
 
     DateTime startTimestamp = _hub.options.clock();

flutter/test/sentry_navigator_observer_test.dart

@@ -5,6 +5,7 @@ import 'package:flutter/widgets.dart';
 import 'package:flutter_test/flutter_test.dart';
 import 'package:mockito/mockito.dart';
 import 'package:sentry_flutter/sentry_flutter.dart';
+import 'package:sentry_flutter/src/integrations/integrations.dart';
 import 'package:sentry_flutter/src/native/sentry_native.dart';
 import 'package:sentry/src/sentry_tracer.dart';
 import 'package:sentry_flutter/src/navigation/time_to_display_tracker.dart';
@@ -383,8 +384,15 @@ void main() {
       verify(span.setData('route_settings_arguments', arguments));
     });
 
-    test('flutter root name is replaced', () {
+    test('flutter root name is replaced', () async {
       final rootRoute = route(RouteSettings(name: '/'));
+      NativeAppStartIntegration.setAppStartInfo(
+        AppStartInfo(
+          AppStartType.cold,
+          start: DateTime.now().add(const Duration(seconds: 1)),
+          end: DateTime.now().add(const Duration(seconds: 2)),
+        ),
+      );
 
       final hub = _MockHub();
       final span = getMockSentryTracer(name: '/');
@@ -401,6 +409,8 @@ void main() {
 
       sut.didPush(rootRoute, null);
 
+      await Future<void>.delayed(const Duration(milliseconds: 100));
+
       final context = verify(hub.startTransactionWithContext(
         captureAny,
         waitForChildren: true,