class NegotiationMiddlewareTest

class NegotiationMiddlewareTest extends UnitTestCase {
  
  /**
   * @var \Symfony\Component\HttpKernel\HttpKernelInterface
   */
  protected $app;
  
  /**
   * @var \Drupal\Tests\Core\StackMiddleware\StubNegotiationMiddleware
   */
  protected $contentNegotiation;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->app = $this->prophesize(HttpKernelInterface::class);
    $this->contentNegotiation = new StubNegotiationMiddleware($this->app
      ->reveal());
  }
  
  /**
   * Tests the getContentType() method with AJAX iframe upload.
   *
   * @covers ::getContentType
   */
  public function testAjaxIframeUpload() : void {
    $request = new Request();
    $request->request
      ->set('ajax_iframe_upload', '1');
    $this->assertSame('iframeupload', $this->contentNegotiation
      ->getContentType($request));
  }
  
  /**
   * Tests the specifying a format via query parameters gets used.
   *
   * @covers ::getContentType
   */
  public function testFormatViaQueryParameter() : void {
    $request = new Request();
    $request->query
      ->set('_format', 'bob');
    $this->assertSame('bob', $this->contentNegotiation
      ->getContentType($request));
  }
  
  /**
   * Tests the getContentType() method when no priority format is found.
   *
   * @covers ::getContentType
   */
  public function testUnknownContentTypeReturnsNull() : void {
    $request = new Request();
    $this->assertNull($this->contentNegotiation
      ->getContentType($request));
  }
  
  /**
   * Tests the getContentType() method when no priority format is found but it's an AJAX request.
   *
   * @covers ::getContentType
   */
  public function testUnknownContentTypeButAjaxRequest() : void {
    $request = new Request();
    $request->headers
      ->set('X-Requested-With', 'XMLHttpRequest');
    $this->assertNull($this->contentNegotiation
      ->getContentType($request));
  }
  
  /**
   * Tests that handle() correctly hands off to sub application.
   *
   * @covers ::handle
   */
  public function testHandle() : void {
    $request = $this->prophesize(Request::class);
    // Default empty format list should not set any formats.
    $request->setFormat()
      ->shouldNotBeCalled();
    // Request format will be set with default format.
    $request->setRequestFormat()
      ->shouldNotBeCalled();
    // Some getContentType calls we don't really care about but have to mock.
    $request_mock = $request->reveal();
    $request_mock->query = new InputBag();
    $request_mock->request = new InputBag();
    // Calling kernel app with default arguments.
    $this->app
      ->handle($request_mock, HttpKernelInterface::MAIN_REQUEST, TRUE)
      ->shouldBeCalled()
      ->willReturn($this->createMock(Response::class));
    $this->contentNegotiation
      ->handle($request_mock);
    // Calling kernel app with specified arguments.
    $this->app
      ->handle($request_mock, HttpKernelInterface::SUB_REQUEST, FALSE)
      ->shouldBeCalled()
      ->willReturn($this->createMock(Response::class));
    $this->contentNegotiation
      ->handle($request_mock, HttpKernelInterface::SUB_REQUEST, FALSE);
  }
  
  /**
   * @covers ::registerFormat
   */
  public function testSetFormat() : void {
    $app = $this->createMock(HttpKernelInterface::class);
    $app->expects($this->once())
      ->method('handle')
      ->willReturn($this->createMock(Response::class));
    $content_negotiation = new StubNegotiationMiddleware($app);
    $request = $this->prophesize(Request::class);
    // Default empty format list should not set any formats.
    $request->setFormat('david', 'geeky/david')
      ->shouldBeCalled();
    // Some calls we don't care about.
    $request->setRequestFormat()
      ->shouldNotBeCalled();
    $request_mock = $request->reveal();
    $request_mock->query = new InputBag();
    $request_mock->request = new InputBag();
    // Trigger handle.
    $content_negotiation->registerFormat('david', 'geeky/david');
    $content_negotiation->handle($request_mock);
  }

}