Laravel File Upload test

AddAvatarTest.php

<?php

namespace Tests\Feature;

use Tests\TestCase;
use Illuminate\Http\UploadedFile;
use Illuminate\Support\Facades\Storage;
use Illuminate\Foundation\Testing\RefreshDatabase;

class AddAvatarTest extends TestCase
{
    use RefreshDatabase;

    /** @test */
    public function a_user_may_add_an_avatar_to_their_profile()
    {
        $this->signIn();

        Storage::fake('public');

        $this->json('POST', route('avatar', auth()->id()), [
            'avatar' => $file = UploadedFile::fake()->image('avatar.jpg')
        ]);

        $this->assertEquals(asset('avatars/'.$file->hashName()), auth()->user()->avatar_path);

        Storage::disk('public')->assertExists('avatars/' . $file->hashName());
    }
}

config.php

<?php

return [

    /*
    |--------------------------------------------------------------------------
    | Default Filesystem Disk
    |--------------------------------------------------------------------------
    |
    | Here you may specify the default filesystem disk that should be used
    | by the framework. The "local" disk, as well as a variety of cloud
    | based disks are available to your application. Just store away!
    |
    */

    'default' => 'local',
  ]

UserAvatarController.php

<?php

namespace App\Http\Controllers;

use Illuminate\Support\Facades\Storage;

class UserAvatarController extends Controller
{
    /**
     * Store a new avatar.
     *
     * @return \Illuminate\Http\Response
     */
    public function store()
    {
        request()->validate([
            'avatar' => ['required', 'image']
        ]);
        
        auth()->user()->update([
            'avatar_path' => request()->file('avatar')->store('avatars', 'public')
        ]);
      
        return response([], 204);
    }
}