class DenyNodePreviewTest

class DenyNodePreviewTest extends UnitTestCase {
    
    /**
     * The response policy under test.
     *
     * @var \Drupal\node\PageCache\DenyNodePreview
     */
    protected $policy;
    
    /**
     * A request object.
     *
     * @var \Symfony\Component\HttpFoundation\Request
     */
    protected $request;
    
    /**
     * A response object.
     *
     * @var \Symfony\Component\HttpFoundation\Response
     */
    protected $response;
    
    /**
     * The current route match.
     *
     * @var \Drupal\Core\Routing\RouteMatch|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $routeMatch;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->routeMatch = $this->createMock('Drupal\\Core\\Routing\\RouteMatchInterface');
        $this->policy = new DenyNodePreview($this->routeMatch);
        $this->response = new Response();
        $this->request = new Request();
    }
    
    /**
     * Asserts that caching is denied on the node preview route.
     *
     * @dataProvider providerPrivateImageStyleDownloadPolicy
     * @covers ::check
     */
    public function testPrivateImageStyleDownloadPolicy($expected_result, $route_name) {
        $this->routeMatch
            ->expects($this->once())
            ->method('getRouteName')
            ->willReturn($route_name);
        $actual_result = $this->policy
            ->check($this->response, $this->request);
        $this->assertSame($expected_result, $actual_result);
    }
    
    /**
     * Provides data and expected results for the test method.
     *
     * @return array
     *   Data and expected results.
     */
    public function providerPrivateImageStyleDownloadPolicy() {
        return [
            [
                ResponsePolicyInterface::DENY,
                'entity.node.preview',
            ],
            [
                NULL,
                'some.other.route',
            ],
            [
                NULL,
                NULL,
            ],
            [
                NULL,
                FALSE,
            ],
            [
                NULL,
                TRUE,
            ],
            [
                NULL,
                new \StdClass(),
            ],
            [
                NULL,
                [
                    1,
                    2,
                    3,
                ],
            ],
        ];
    }

}