class CustomPageExceptionHtmlSubscriberTest

class CustomPageExceptionHtmlSubscriberTest extends UnitTestCase {

  /**
   * The mocked HTTP kernel.
   *
   * @var \Symfony\Component\HttpKernel\HttpKernelInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $kernel;

  /**
   * The mocked config factory.
   *
   * @var \Drupal\Core\Config\ConfigFactoryInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $configFactory;

  /**
   * The mocked logger.
   *
   * @var \Psr\Log\LoggerInterface
   */
  protected $logger;

  /**
   * The PHP error log settings before the test.
   *
   * @var string
   */
  protected $errorLog;

  /**
   * The tested custom page exception subscriber.
   *
   * @var \Drupal\Core\EventSubscriber\CustomPageExceptionHtmlSubscriber|\Drupal\Tests\Core\EventSubscriber\CustomPageExceptionHtmlSubscriberTest
   */
  protected $customPageSubscriber;

  /**
   * The mocked redirect.destination service.
   *
   * @var \Drupal\Core\Routing\RedirectDestinationInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $redirectDestination;

  /**
   * The mocked access unaware router.
   * @var \Symfony\Component\Routing\Matcher\UrlMatcherInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $accessUnawareRouter;

  /**
   * The access manager.
   *
   * @var \Drupal\Core\Access\AccessManagerInterface
   */
  protected $accessManager;

  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->configFactory = $this
      ->getConfigFactoryStub([
      'system.site' => [
        'page.403' => '/access-denied-page',
        'page.404' => '/not-found-page',
      ],
    ]);
    $this->kernel = $this
      ->createMock('Symfony\\Component\\HttpKernel\\HttpKernelInterface');
    $this->logger = $this
      ->createMock('Psr\\Log\\LoggerInterface');
    $this->redirectDestination = $this
      ->createMock('\\Drupal\\Core\\Routing\\RedirectDestinationInterface');
    $this->redirectDestination
      ->expects($this
      ->any())
      ->method('getAsArray')
      ->willReturn([
      'destination' => 'test',
    ]);
    $this->accessUnawareRouter = $this
      ->createMock('Symfony\\Component\\Routing\\Matcher\\UrlMatcherInterface');
    $this->accessUnawareRouter
      ->expects($this
      ->any())
      ->method('match')
      ->willReturn([
      '_controller' => 'mocked',
    ]);
    $this->accessManager = $this
      ->createMock('Drupal\\Core\\Access\\AccessManagerInterface');
    $this->accessManager
      ->expects($this
      ->any())
      ->method('checkNamedRoute')
      ->willReturn(AccessResult::allowed()
      ->addCacheTags([
      'foo',
      'bar',
    ]));
    $this->customPageSubscriber = new CustomPageExceptionHtmlSubscriber($this->configFactory, $this->kernel, $this->logger, $this->redirectDestination, $this->accessUnawareRouter, $this->accessManager);
    $path_validator = $this
      ->createMock('Drupal\\Core\\Path\\PathValidatorInterface');
    $path_validator
      ->expects($this
      ->any())
      ->method('getUrlIfValidWithoutAccessCheck')
      ->willReturn(Url::fromRoute('foo', [
      'foo' => 'bar',
    ]));
    $container = new ContainerBuilder();
    $container
      ->set('path.validator', $path_validator);
    \Drupal::setContainer($container);

    // You can't create an exception in PHP without throwing it. Store the
    // current error_log, and disable it temporarily.
    $this->errorLog = ini_set('error_log', file_exists('/dev/null') ? '/dev/null' : 'nul');
  }

  /**
   * {@inheritdoc}
   */
  protected function tearDown() : void {
    ini_set('error_log', $this->errorLog);
  }

  /**
   * Tests onHandleException with a POST request.
   */
  public function testHandleWithPostRequest() {
    $request = Request::create('/test', 'POST', [
      'name' => 'druplicon',
      'pass' => '12345',
    ]);
    $request_context = new RequestContext();
    $request_context
      ->fromRequest($request);
    $this->accessUnawareRouter
      ->expects($this
      ->any())
      ->method('getContext')
      ->willReturn($request_context);
    $this->kernel
      ->expects($this
      ->once())
      ->method('handle')
      ->willReturnCallback(function (Request $request) {
      return new HtmlResponse($request
        ->getMethod());
    });
    $event = new ExceptionEvent($this->kernel, $request, HttpKernelInterface::MAIN_REQUEST, new NotFoundHttpException('foo'));
    $this->customPageSubscriber
      ->onException($event);
    $response = $event
      ->getResponse();
    $result = $response
      ->getContent() . " " . UrlHelper::buildQuery($request->request
      ->all());
    $this
      ->assertEquals('POST name=druplicon&pass=12345', $result);
    $this
      ->assertEquals(AccessResult::allowed()
      ->addCacheTags([
      'foo',
      'bar',
    ]), $request->attributes
      ->get(AccessAwareRouterInterface::ACCESS_RESULT));
  }

  /**
   * Tests onHandleException with a GET request.
   */
  public function testHandleWithGetRequest() {
    $request = Request::create('/test', 'GET', [
      'name' => 'druplicon',
      'pass' => '12345',
    ]);
    $request->attributes
      ->set(AccessAwareRouterInterface::ACCESS_RESULT, AccessResult::forbidden()
      ->addCacheTags([
      'druplicon',
    ]));
    $request_context = new RequestContext();
    $request_context
      ->fromRequest($request);
    $this->accessUnawareRouter
      ->expects($this
      ->any())
      ->method('getContext')
      ->willReturn($request_context);
    $this->kernel
      ->expects($this
      ->once())
      ->method('handle')
      ->willReturnCallback(function (Request $request) {
      return new Response($request
        ->getMethod() . ' ' . UrlHelper::buildQuery($request->query
        ->all()));
    });
    $event = new ExceptionEvent($this->kernel, $request, HttpKernelInterface::MAIN_REQUEST, new NotFoundHttpException('foo'));
    $this->customPageSubscriber
      ->onException($event);
    $response = $event
      ->getResponse();
    $result = $response
      ->getContent() . " " . UrlHelper::buildQuery($request->request
      ->all());
    $this
      ->assertEquals('GET name=druplicon&pass=12345&destination=test&_exception_statuscode=404 ', $result);
    $this
      ->assertEquals(AccessResult::forbidden()
      ->addCacheTags([
      'druplicon',
      'foo',
      'bar',
    ]), $request->attributes
      ->get(AccessAwareRouterInterface::ACCESS_RESULT));
  }

}