Laravel 5.8 unit testing with laravel/passport

PassportTestCase

<?php

// origin: https://gist.github.com/archy-bold/bd696e8ec84a7657b724523e07fd7a6c

namespace Tests;

use DB;
use DateTime;
use App\User;
use Laravel\Passport\ClientRepository;
use Illuminate\Foundation\Testing\WithoutMiddleware;
use Illuminate\Foundation\Testing\DatabaseMigrations;
use Illuminate\Foundation\Testing\DatabaseTransactions;

abstract class PassportTestCase extends TestCase
{
  use DatabaseTransactions, DatabaseMigrations;

  protected $headers = [];
  protected $scopes = [];
  protected $user;

  protected function setUp(): void
  {
    parent::setUp();

    $clientRepository = new ClientRepository();
    $client = $clientRepository->createPersonalAccessClient(
      null,
      'Test Personal Access Client',
      '/'
    );

    DB::table('oauth_personal_access_clients')->insert([
      'client_id' => $client->id,
      'created_at' => new DateTime,
      'updated_at' => new DateTime,
    ]);

    $this->user = factory(User::class)->create();
    $token = $this->user->createToken('TestToken', $this->scopes)->accessToken;
    $this->headers['Accept'] = 'application/json';
    $this->headers['Authorization'] = 'Bearer ' . $token;
  }

  public function get($uri, array $headers = [])
  {
    return parent::get($uri, array_merge($this->headers, $headers));
  }

  public function getJson($uri, array $headers = [])
  {
    return parent::getJson($uri, array_merge($this->headers, $headers));
  }

  public function post($uri, array $data = [], array $headers = [])
  {
    return parent::post($uri, $data, array_merge($this->headers, $headers));
  }

  public function postJson($uri, array $data = [], array $headers = [])
  {
    return parent::postJson($uri, $data, array_merge($this->headers, $headers));
  }

  public function put($uri, array $data = [], array $headers = [])
  {
    return parent::put($uri, $data, array_merge($this->headers, $headers));
  }

  public function putJson($uri, array $data = [], array $headers = [])
  {
    return parent::putJson($uri, $data, array_merge($this->headers, $headers));
  }

  public function patch($uri, array $data = [], array $headers = [])
  {
    return parent::patch($uri, $data, array_merge($this->headers, $headers));
  }

  public function patchJson($uri, array $data = [], array $headers = [])
  {
    return parent::patchJson($uri, $data, array_merge($this->headers, $headers));
  }

  public function delete($uri, array $data = [], array $headers = [])
  {
    return parent::delete($uri, $data, array_merge($this->headers, $headers));
  }

  public function deleteJson($uri, array $data = [], array $headers = [])
  {
    return parent::deleteJson($uri, $data, array_merge($this->headers, $headers));
  }
}