class RedirectDestinationTest

class RedirectDestinationTest extends UnitTestCase {
  
  /**
   * The request stack.
   *
   * @var \Symfony\Component\HttpFoundation\RequestStack
   */
  protected $requestStack;
  
  /**
   * The mocked URL generator.
   *
   * @var \Drupal\Core\Routing\UrlGeneratorInterface|\PHPUnit\Framework\MockObject\MockObject
   */
  protected $urlGenerator;
  
  /**
   * The tested redirect destination.
   *
   * @var \Drupal\Core\Routing\RedirectDestination
   */
  protected $redirectDestination;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->requestStack = new RequestStack();
    $this->urlGenerator = $this->createMock('Drupal\\Core\\Routing\\UrlGeneratorInterface');
    $this->redirectDestination = new RedirectDestination($this->requestStack, $this->urlGenerator);
  }
  protected function setupUrlGenerator() : void {
    $this->urlGenerator
      ->expects($this->any())
      ->method('generateFromRoute')
      ->willReturnCallback(function ($route, $parameters, $options) {
      $query_string = '';
      if (!empty($options['query'])) {
        $query_string = '?' . UrlHelper::buildQuery($options['query']);
      }
      return '/current-path' . $query_string;
    });
  }
  
  /**
   * Tests destination passed via $_GET.
   *
   * @param \Symfony\Component\HttpFoundation\Request $request
   *   The request to test.
   * @param string $expected_destination
   *   The expected destination.
   *
   * @legacy-covers ::get
   */
  public function testGet(Request $request, $expected_destination) : void {
    $this->requestStack
      ->push($request);
    $this->setupUrlGenerator();
    // Call in twice in order to ensure it returns the same the next time.
    $this->assertEquals($expected_destination, $this->redirectDestination
      ->get());
    $this->assertEquals($expected_destination, $this->redirectDestination
      ->get());
  }
  
  /**
   * Tests get as array.
   *
   * @legacy-covers ::getAsArray
   */
  public function testGetAsArray(Request $request, $expected_destination) : void {
    $this->requestStack
      ->push($request);
    $this->setupUrlGenerator();
    // Call in twice in order to ensure it returns the same the next time.
    $this->assertEquals([
      'destination' => $expected_destination,
    ], $this->redirectDestination
      ->getAsArray());
    $this->assertEquals([
      'destination' => $expected_destination,
    ], $this->redirectDestination
      ->getAsArray());
  }
  public static function providerGet() {
    $data = [];
    $request = Request::create('/');
    $request->query
      ->set('destination', '/example');
    // A request with a destination query.
    $data[] = [
      $request,
      '/example',
    ];
    // A request without a destination query.
    $request = Request::create('/');
    $data[] = [
      $request,
      '/current-path',
    ];
    // A request without destination query, but other query attributes.
    $request = Request::create('/');
    $request->query
      ->set('other', 'value');
    $data[] = [
      $request,
      '/current-path?other=value',
    ];
    // A request with a dedicated specified external destination.
    $request = Request::create('/');
    $request->query
      ->set('destination', 'https://www.drupal.org');
    $data[] = [
      $request,
      '/',
    ];
    return $data;
  }
  
  /**
   * Tests set before get call.
   *
   * @legacy-covers ::set
   * @legacy-covers ::get
   */
  public function testSetBeforeGetCall() : void {
    $this->redirectDestination
      ->set('/example');
    $this->assertEquals('/example', $this->redirectDestination
      ->get());
  }
  
  /**
   * Tests set after get call.
   *
   * @legacy-covers ::set
   * @legacy-covers ::get
   */
  public function testSetAfterGetCall() : void {
    $request = Request::create('/');
    $request->query
      ->set('destination', '/other-example');
    $this->requestStack
      ->push($request);
    $this->setupUrlGenerator();
    $this->redirectDestination
      ->set('/example');
    $this->assertEquals('/example', $this->redirectDestination
      ->get());
  }

}