Mount not wroking in test

I call professions in a method:

public $professions;

public function mount()
        $this->professions = Profession::get();

public function submit() 

I display professions in a view.

<div class="form-group">

<select wire:model="profession_id" class="form-control">

    @foreach ($professions as $profession)

    <option value="{{$profession->id}}">{{$profession->title}}</option>




It works. But I write through tests. And the tests don’t work.

$data = [
    'name' => 'Test',
    'email' => '[email protected]',
    'profession_id' => Profession::ID__ACTOR,

        ->set($data) // has no $professions data

I get error:
ErrorException: Invalid argument supplied for foreach()

How to solve this problem? It turns out that the mount method does not set the variable of professions in the test. I don’t want to set the variable $professions in the test. And I don’t want to check is_null($professions) in the template. It won’t be right. I want to test the work of the mount method too.

Are you using the latest version of Livewire: