class RouteSubscriberTest

class RouteSubscriberTest extends UnitTestCase {
    
    /**
     * The mocked entity type manager.
     *
     * @var \Drupal\Core\Entity\EntityTypeManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $entityTypeManager;
    
    /**
     * The mocked view storage.
     *
     * @var \Drupal\Tests\views\Kernel\ViewStorageTest|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $viewStorage;
    
    /**
     * The tested views route subscriber.
     *
     * @var \Drupal\views\EventSubscriber\RouteSubscriber|\Drupal\Tests\views\Unit\EventSubscriber\TestRouteSubscriber
     */
    protected $routeSubscriber;
    
    /**
     * The mocked key value storage.
     *
     * @var \Drupal\Core\State\StateInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $state;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        $this->entityTypeManager = $this->createMock(EntityTypeManagerInterface::class);
        $this->viewStorage = $this->getMockBuilder('Drupal\\Core\\Config\\Entity\\ConfigEntityStorage')
            ->disableOriginalConstructor()
            ->getMock();
        $this->entityTypeManager
            ->expects($this->any())
            ->method('getStorage')
            ->with('view')
            ->willReturn($this->viewStorage);
        $this->state = $this->createMock('\\Drupal\\Core\\State\\StateInterface');
        $this->routeSubscriber = new TestRouteSubscriber($this->entityTypeManager, $this->state);
    }
    
    /**
     * @covers ::routeRebuildFinished
     */
    public function testRouteRebuildFinished() {
        [
            $display_1,
            $display_2,
        ] = $this->setupMocks();
        $display_1->expects($this->once())
            ->method('collectRoutes')
            ->willReturn([
            'test_id.page_1' => 'views.test_id.page_1',
        ]);
        $display_2->expects($this->once())
            ->method('collectRoutes')
            ->willReturn([
            'test_id.page_2' => 'views.test_id.page_2',
        ]);
        $this->routeSubscriber
            ->routes();
        $this->state
            ->expects($this->once())
            ->method('set')
            ->with('views.view_route_names', [
            'test_id.page_1' => 'views.test_id.page_1',
            'test_id.page_2' => 'views.test_id.page_2',
        ]);
        $this->routeSubscriber
            ->routeRebuildFinished();
    }
    
    /**
     * Tests the onAlterRoutes method.
     *
     * @see \Drupal\views\EventSubscriber\RouteSubscriber::onAlterRoutes()
     */
    public function testOnAlterRoutes() {
        $collection = new RouteCollection();
        // The first route will be overridden later.
        $collection->add('test_route', new Route('test_route', [
            '_controller' => 'Drupal\\Tests\\Core\\Controller\\TestController',
        ]));
        $route_2 = new Route('test_route/example', [
            '_controller' => 'Drupal\\Tests\\Core\\Controller\\TestController',
        ]);
        $collection->add('test_route_2', $route_2);
        $route_event = new RouteBuildEvent($collection, 'views');
        [
            $display_1,
            $display_2,
        ] = $this->setupMocks();
        // The page_1 display overrides an existing route, so the dynamicRoutes
        // should only call the second display.
        $display_1->expects($this->once())
            ->method('collectRoutes')
            ->willReturnCallback(function () use ($collection) {
            $collection->add('views.test_id.page_1', new Route('test_route', [
                '_controller' => 'Drupal\\views\\Routing\\ViewPageController',
            ]));
            return [
                'test_id.page_1' => 'views.test_id.page_1',
            ];
        });
        $display_1->expects($this->once())
            ->method('alterRoutes')
            ->willReturn([
            'test_id.page_1' => 'test_route',
        ]);
        $display_2->expects($this->once())
            ->method('collectRoutes')
            ->willReturnCallback(function () use ($collection) {
            $collection->add('views.test_id.page_2', new Route('test_route', [
                '_controller' => 'Drupal\\views\\Routing\\ViewPageController',
            ]));
            return [
                'test_id.page_2' => 'views.test_id.page_2',
            ];
        });
        $display_2->expects($this->once())
            ->method('alterRoutes')
            ->willReturn([]);
        // Ensure that even both the collectRoutes() and alterRoutes() methods
        // are called on the displays, we ensure that the route first defined by
        // views is dropped.
        $this->routeSubscriber
            ->routes();
        $this->assertNull($this->routeSubscriber
            ->onAlterRoutes($route_event));
        $this->state
            ->expects($this->once())
            ->method('set')
            ->with('views.view_route_names', [
            'test_id.page_1' => 'test_route',
            'test_id.page_2' => 'views.test_id.page_2',
        ]);
        $collection = $route_event->getRouteCollection();
        $this->assertEquals([
            'test_route',
            'test_route_2',
            'views.test_id.page_2',
        ], array_keys($collection->all()));
        $this->routeSubscriber
            ->routeRebuildFinished();
    }
    
    /**
     * Sets up mocks of Views objects needed for testing.
     *
     * @return \Drupal\views\Plugin\views\display\DisplayRouterInterface[]|\PHPUnit\Framework\MockObject\MockObject[]
     *   An array of two mocked view displays.
     */
    protected function setupMocks() {
        $executable = $this->getMockBuilder('Drupal\\views\\ViewExecutable')
            ->disableOriginalConstructor()
            ->getMock();
        $view = $this->getMockBuilder('Drupal\\views\\Entity\\View')
            ->disableOriginalConstructor()
            ->getMock();
        $this->viewStorage
            ->expects($this->any())
            ->method('load')
            ->willReturn($view);
        $view->expects($this->any())
            ->method('getExecutable')
            ->willReturn($executable);
        $view->expects($this->any())
            ->method('id')
            ->willReturn('test_id');
        $executable->storage = $view;
        $executable->expects($this->any())
            ->method('setDisplay')
            ->willReturnMap([
            [
                'page_1',
                TRUE,
            ],
            [
                'page_2',
                TRUE,
            ],
            [
                'page_3',
                FALSE,
            ],
        ]);
        // Ensure that only the first two displays are actually called.
        $display_1 = $this->createMock('Drupal\\views\\Plugin\\views\\display\\DisplayRouterInterface');
        $display_2 = $this->createMock('Drupal\\views\\Plugin\\views\\display\\DisplayRouterInterface');
        $display_collection = $this->getMockBuilder('Drupal\\views\\DisplayPluginCollection')
            ->disableOriginalConstructor()
            ->getMock();
        $display_collection->expects($this->any())
            ->method('get')
            ->willReturnMap([
            [
                'page_1',
                $display_1,
            ],
            [
                'page_2',
                $display_2,
            ],
        ]);
        $executable->displayHandlers = $display_collection;
        $this->routeSubscriber->applicableViews = [];
        $this->routeSubscriber->applicableViews[] = [
            'test_id',
            'page_1',
        ];
        $this->routeSubscriber->applicableViews[] = [
            'test_id',
            'page_2',
        ];
        $this->routeSubscriber->applicableViews[] = [
            'test_id',
            'page_3',
        ];
        return [
            $display_1,
            $display_2,
        ];
    }

}