I am working on a project using Laravel. I want to use Events and Notifications.
For context: A organization can post a Task ( Can be compared to a Job ). A User can apply for that job. As soon as a User applies for a Task an Email should be sent to the contact email stored with the Task.´

My Event: ApplicationCreated My Notification: ApplicationCreatedNotification My Listener: SendApplicationCreatedNotification

My controller function:

public function store(StoreApplicationRequest $request, Task $task)
{
    Gate::authorize('store', [Application::class, $task]);

    $application = null;

     DB::transaction(function () use ($request, $task, &$application) {
        $application = $task->applications()->create([
            ...$request->validated(),
            'user_id' => auth()->id(),
        ]);
    
        $application->load('user');
        $application->setRelation('task', $task);
     });

        

    ApplicationCreated::dispatch($application);

    return response()->json($application, 201);
}

My handle function in the Listener:

public function handle(ApplicationCreated $event): void
{
    $recipient = $event->application->task->contact_email;
    $name = $event->application->task->contact_firstname . ' ' . $event->application->task->contact_lastname;
    Notification::route('mail', [
        $recipient => $name,
    ])
        ->notify(new ApplicationCreatedNotification($event->application));

            
    // @TODO: Send notification to the applicant as well 
    //        something like this:
    //        "You successfully applied to the task: $task->title"
}

And My Test:

public function test_user_can_apply_to_task(): void
{
    $user = User::factory()->organization()->create();
    $orga = Organization::factory()->forUser($user)->create();
    $task = Task::factory()->forOrganization($orga)->create();

    $basicUser = User::factory()->create();
    Event::fake();
    Notification::fake();

    $response = $this->actingAs($basicUser)->post(route('applications.store', $task->id));

    Event::assertDispatched(ApplicationCreated::class);


    Notification::assertSentOnDemand(ApplicationCreatedNotification::class, function (ApplicationCreatedNotification $notification, array $channels, object $notifiable) use ($task) {
        $recipient = $task->contact_email;
        $name = $task->contact_firstname . ' ' . $task->contact_lastname;
        return $notifiable->routes['mail'] === [$recipient => $name];
    });

    $response->assertStatus(201);

    $this->assertDatabaseHas('applications', [
        'task_id' => $task->id,
        'user_id' => $basicUser->id,
    ]);

}

I get this output:

FAILED  TestsFeatureCreateApplicationTest > user can apply to task
The expected [AppNotificationsApplicationCreatedNotification] notification was not sent.
Failed asserting that false is true.

  at vendorlaravelframeworksrcIlluminateSupportTestingFakesNotificationFake.php:89
     85▕         if (is_numeric($callback)) {
     86▕             return $this->assertSentToTimes($notifiable, $notification, $callback);
     87▕         }
     88▕
  ➜  89▕         PHPUnit::assertTrue(
     90▕             $this->sent($notifiable, $notification, $callback)->count() > 0,
     91▕             "The expected [{$notification}] notification was not sent."
     92▕         );
     93▕     }

  1   vendorlaravelframeworksrcIlluminateSupportTestingFakesNotificationFake.php:89
  2   vendorlaravelframeworksrcIlluminateSupportTestingFakesNotificationFake.php:54

I know that the handle function gets called because when I add dd($recipient, $name); exit(0); the test process stops and I get this output

"[email protected]" // appListenersSendApplicationCreatedNotification.php:33
"Katrin Thomas" // appListenersSendApplicationCreatedNotification.php:33

Does anyone has an Idea why this doesn’t work?