class MenuActiveTrailTest

class MenuActiveTrailTest extends UnitTestCase {
    
    /**
     * The tested active menu trail service.
     *
     * @var \Drupal\Core\Menu\MenuActiveTrail
     */
    protected $menuActiveTrail;
    
    /**
     * The test request stack.
     *
     * @var \Symfony\Component\HttpFoundation\RequestStack
     */
    protected $requestStack;
    
    /**
     * The current route match service.
     *
     * @var \Drupal\Core\Routing\CurrentRouteMatch
     */
    protected $currentRouteMatch;
    
    /**
     * The mocked menu link manager.
     *
     * @var \Drupal\Core\Menu\MenuLinkManagerInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $menuLinkManager;
    
    /**
     * The mocked cache backend.
     *
     * @var \Drupal\Core\Cache\CacheBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $cache;
    
    /**
     * The mocked lock.
     *
     * @var \Drupal\Core\Lock\LockBackendInterface|\PHPUnit\Framework\MockObject\MockObject
     */
    protected $lock;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $this->requestStack = new RequestStack();
        $this->currentRouteMatch = new CurrentRouteMatch($this->requestStack);
        $this->menuLinkManager = $this->createMock('Drupal\\Core\\Menu\\MenuLinkManagerInterface');
        $this->cache = $this->createMock('\\Drupal\\Core\\Cache\\CacheBackendInterface');
        $this->lock = $this->createMock('\\Drupal\\Core\\Lock\\LockBackendInterface');
        $this->menuActiveTrail = new MenuActiveTrail($this->menuLinkManager, $this->currentRouteMatch, $this->cache, $this->lock);
        $container = new Container();
        $container->set('cache_tags.invalidator', $this->createMock('\\Drupal\\Core\\Cache\\CacheTagsInvalidatorInterface'));
        \Drupal::setContainer($container);
    }
    
    /**
     * Provides test data for all test methods.
     *
     * @return array
     *   Returns a list of test data of which each is an array containing the
     *   following elements:
     *     - request: A request object.
     *     - links: An array of menu links keyed by ID.
     *     - menu_name: The active menu name.
     *     - expected_link: The expected active link for the given menu.
     */
    public static function provider() {
        $data = [];
        $mock_route = new Route('');
        $request = new Request();
        $request->attributes
            ->set(RouteObjectInterface::ROUTE_NAME, 'baby_llama');
        $request->attributes
            ->set(RouteObjectInterface::ROUTE_OBJECT, $mock_route);
        $request->attributes
            ->set('_raw_variables', new InputBag([]));
        $link_1 = MenuLinkMock::create([
            'id' => 'baby_llama_link_1',
            'route_name' => 'baby_llama',
            'title' => 'Baby llama',
            'parent' => 'mama_llama_link',
        ]);
        $link_2 = MenuLinkMock::create([
            'id' => 'baby_llama_link_2',
            'route_name' => 'baby_llama',
            'title' => 'Baby llama',
            'parent' => 'papa_llama_link',
        ]);
        // @see \Drupal\Core\Menu\MenuLinkManagerInterface::getParentIds()
        $link_1_parent_ids = [
            'baby_llama_link_1',
            'mama_llama_link',
            '',
        ];
        $empty_active_trail = [
            '',
        ];
        // No active link is returned when zero links match the current route.
        $data[] = [
            $request,
            [],
            Random::machineName(),
            NULL,
            $empty_active_trail,
        ];
        // The first (and only) matching link is returned when one link matches the
        // current route.
        $data[] = [
            $request,
            [
                'baby_llama_link_1' => $link_1,
            ],
            Random::machineName(),
            $link_1,
            $link_1_parent_ids,
        ];
        // The first of multiple matching links is returned when multiple links
        // match the current route, where "first" is determined by sorting by key.
        $data[] = [
            $request,
            [
                'baby_llama_link_1' => $link_1,
                'baby_llama_link_2' => $link_2,
            ],
            Random::machineName(),
            $link_1,
            $link_1_parent_ids,
        ];
        // No active link is returned in case of a 403.
        $request = new Request();
        $request->attributes
            ->set('_exception_statuscode', 403);
        $data[] = [
            $request,
            FALSE,
            Random::machineName(),
            NULL,
            $empty_active_trail,
        ];
        // No active link is returned when the route name is missing.
        $request = new Request();
        $data[] = [
            $request,
            FALSE,
            Random::machineName(),
            NULL,
            $empty_active_trail,
        ];
        return $data;
    }
    
    /**
     * Tests getActiveLink().
     *
     * @covers ::getActiveLink
     * @dataProvider provider
     */
    public function testGetActiveLink(Request $request, $links, $menu_name, $expected_link) : void {
        $this->requestStack
            ->push($request);
        if ($links !== FALSE) {
            $this->menuLinkManager
                ->expects($this->exactly(2))
                ->method('loadLinksByRoute')
                ->with('baby_llama')
                ->willReturn($links);
        }
        // Test with menu name.
        $this->assertSame($expected_link, $this->menuActiveTrail
            ->getActiveLink($menu_name));
        // Test without menu name.
        $this->assertSame($expected_link, $this->menuActiveTrail
            ->getActiveLink());
    }
    
    /**
     * Tests getActiveTrailIds().
     *
     * @covers ::getActiveTrailIds
     * @dataProvider provider
     */
    public function testGetActiveTrailIds(Request $request, $links, $menu_name, $expected_link, $expected_trail) : void {
        $expected_trail_ids = array_combine($expected_trail, $expected_trail);
        $this->requestStack
            ->push($request);
        if ($links !== FALSE) {
            // We expect exactly two calls, one for the first call, and one after the
            // cache clearing below.
            $this->menuLinkManager
                ->expects($this->exactly(2))
                ->method('loadLinksByRoute')
                ->with('baby_llama')
                ->willReturn($links);
            if ($expected_link !== NULL) {
                $this->menuLinkManager
                    ->expects($this->exactly(2))
                    ->method('getParentIds')
                    ->willReturnMap([
                    [
                        $expected_link->getPluginId(),
                        $expected_trail_ids,
                    ],
                ]);
            }
        }
        // Call out the same twice in order to ensure that static caching works.
        $this->assertSame($expected_trail_ids, $this->menuActiveTrail
            ->getActiveTrailIds($menu_name));
        $this->assertSame($expected_trail_ids, $this->menuActiveTrail
            ->getActiveTrailIds($menu_name));
        $this->menuActiveTrail
            ->clear();
        $this->assertSame($expected_trail_ids, $this->menuActiveTrail
            ->getActiveTrailIds($menu_name));
    }
    
    /**
     * Tests getCid()
     *
     * @covers ::getCid
     */
    public function testGetCid() : void {
        $data = $this->provider()[1];
        
        /** @var \Symfony\Component\HttpFoundation\Request $request */
        $request = $data[0];
        
        /** @var \Symfony\Component\Routing\Route $route */
        $route = $request->attributes
            ->get(RouteObjectInterface::ROUTE_OBJECT);
        $route->setPath('/test/{b}/{a}');
        $request->attributes
            ->get('_raw_variables')
            ->add([
            'b' => 1,
            'a' => 0,
        ]);
        $this->requestStack
            ->push($request);
        $this->menuLinkManager
            ->expects($this->any())
            ->method('loadLinksByRoute')
            ->with('baby_llama')
            ->willReturn($data[1]);
        $expected_link = $data[3];
        $expected_trail = $data[4];
        $expected_trail_ids = array_combine($expected_trail, $expected_trail);
        $this->menuLinkManager
            ->expects($this->any())
            ->method('getParentIds')
            ->willReturnMap([
            [
                $expected_link->getPluginId(),
                $expected_trail_ids,
            ],
        ]);
        $this->assertSame($expected_trail_ids, $this->menuActiveTrail
            ->getActiveTrailIds($data[2]));
        $this->cache
            ->expects($this->once())
            ->method('set')
            ->with('active-trail:route:baby_llama:route_parameters:' . serialize([
            'a' => 0,
            'b' => 1,
        ]));
        $this->lock
            ->expects($this->any())
            ->method('acquire')
            ->willReturn(TRUE);
        $this->menuActiveTrail
            ->destruct();
    }

}