test: fix test for multiple destinations navigation

Author: jokerttu

example/integration_test/t03_navigation_test.dart

@@ -179,7 +179,7 @@ void main() {
     'Test navigating to multiple destinations',
     (PatrolIntegrationTester $) async {
       final Completer<void> navigationFinished = Completer<void>();
-      final Completer<void> newSessionFired = Completer<void>();
+      Completer<void> newSessionFired = Completer<void>();
       int arrivalEventCount = 0;
       List<NavigationWaypoint> waypoints = <NavigationWaypoint>[];
 
@@ -210,6 +210,9 @@ void main() {
                   SimulationOptions(speedMultiplier: 5),
                 );
           } else {
+            // Reset the completer to test that new session event fires again
+            newSessionFired = Completer<void>();
+
             // Find and remove the waypoint that matches the arrived waypoint
             int waypointIndex = -1;
             for (int i = 0; i < waypoints.length; i++) {
@@ -233,6 +236,17 @@ void main() {
                 ),
               );
               await GoogleMapsNavigator.setDestinations(updatedDestinations);
+
+              // Wait for new session event after updating destinations
+              await newSessionFired.future.timeout(
+                const Duration(seconds: 10),
+                onTimeout:
+                    () =>
+                        throw TimeoutException(
+                          'New navigation session event was not fired after updating destinations',
+                        ),
+              );
+
               await GoogleMapsNavigator.simulator
                   .simulateLocationsAlongExistingRouteWithOptions(
                     SimulationOptions(speedMultiplier: 5),