So all my other tests are working except this one when I test the view if it has this string or not. Problem is I'm getting an error message that the method being called is on null but is working when I access the page.
Error message:
Symfony\Component\Debug\Exception\FatalThrowableError: Call to a member function getCode() on null
/home/vagrant/Code/team-stores/app/Http/Controllers/StoreManager/OrderTrackingController.php:20
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Controller.php:55
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/ControllerDispatcher.php:44
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Route.php:203
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Route.php:160
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Router.php:574
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php:30
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:102
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Router.php:576
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Router.php:535
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Router.php:513
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:174
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Routing/Pipeline.php:30
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Pipeline/Pipeline.php:102
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:149
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Foundation/Http/Kernel.php:116
/home/vagrant/Code/team-stores/vendor/laravel/framework/src/Illuminate/Foundation/Testing/Concerns/MakesHttpRequests.php:234
/home/vagrant/Code/team-stores/tests/Feature/OrderTrackingTest.php:152
Test:
public function an_admin_can_view_all_orders_with_their_status()
{
    $this->withoutMiddleWare();
    StoreSession::setMyStore($this->store->code);
    $orders = factory(CompletedOrder::class, 30)->create(['store_id' => $this->store->id]);
    foreach ($orders as $order) {
        factory(CompletedOrderItem::class, 5)->create(['completed_order_id' => $order->id]);
    }
    $response = $this->call("GET", route('list_completed_orders'));
    foreach ($orders as $order) {
        $response->assertSee($order->invoice()->getCode());
    }
}
Controller:
public function index()
{
    $store = StoreSession::getMyStore();
    $completedOrders = CompletedOrder::where('store_id', $store->getId() )->get();
    foreach ($completedOrders as $order) {
        Log::info($order->invoice()->getCode());
    }
    return view('store-manager.order-tracking.index', compact('store', 'completedOrders'));
}
Thanks in advance.
