Laravel Mail Unit Testing

UserRegisterTest.php

<?php

namespace Tests\Feature;

use App\Mail\OrderShipped;
use Illuminate\Foundation\Testing\RefreshDatabase;
use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Support\Facades\Mail;
use Tests\TestCase;

class UserRegisterTest extends TestCase
{
    public function test_user_register()
    {
        Mail::fake();

        // Perform order shipping...

        // Assert that no mailables were sent...
        Mail::assertNothingSent();

        // Assert that a mailable was sent...
        Mail::assertSent(EmailVerification::class);

        // Assert a mailable was sent twice...
        Mail::assertSent(EmailVerification::class, 2);

        // Assert a mailable was not sent...
        Mail::assertNotSent(AnotherMailable::class);
    }
}