class FrontPageTest

class FrontPageTest extends ViewTestBase {
    use AssertViewsCacheTagsTrait;
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The entity storage for nodes.
     *
     * @var \Drupal\node\NodeStorage
     */
    protected $nodeStorage;
    
    /**
     * Modules to enable.
     *
     * @var array
     */
    protected static $modules = [
        'node',
        'contextual',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE, $modules = []) : void {
        parent::setUp($import_test_views, $modules);
        $this->nodeStorage = $this->container
            ->get('entity_type.manager')
            ->getStorage('node');
    }
    
    /**
     * Tests the frontpage.
     */
    public function testFrontPage() {
        $site_name = $this->randomMachineName();
        $this->config('system.site')
            ->set('name', $site_name)
            ->save();
        $view = Views::getView('frontpage');
        // Tests \Drupal\node\Plugin\views\row\RssPluginBase::calculateDependencies().
        $expected = [
            'config' => [
                'core.entity_view_mode.node.rss',
                'core.entity_view_mode.node.teaser',
            ],
            'module' => [
                'node',
                'user',
            ],
        ];
        $this->assertSame($expected, $view->getDependencies());
        $view->setDisplay('page_1');
        $this->executeView($view);
        $view->preview();
        $this->assertEquals('Welcome!', $view->getTitle(), 'The welcome title is used for the empty view.');
        $view->destroy();
        // Create some nodes on the frontpage view. Add more than 10 nodes in order
        // to enable paging.
        $expected = [];
        for ($i = 0; $i < 20; $i++) {
            $values = [];
            $values['type'] = 'article';
            $values['title'] = $this->randomMachineName();
            $values['promote'] = TRUE;
            $values['status'] = TRUE;
            // Test descending sort order.
            $values['created'] = REQUEST_TIME - $i;
            // Test the sticky order.
            if ($i == 5) {
                $values['sticky'] = TRUE;
                $node = $this->nodeStorage
                    ->create($values);
                $node->save();
                // Put the sticky on at the front.
                array_unshift($expected, [
                    'nid' => $node->id(),
                ]);
            }
            else {
                $values['sticky'] = FALSE;
                $node = $this->nodeStorage
                    ->create($values);
                $node->save();
                array_push($expected, [
                    'nid' => $node->id(),
                ]);
            }
        }
        // Create some nodes which aren't on the frontpage, either because they
        // aren't promoted or because they aren't published.
        $not_expected_nids = [];
        $values = [];
        $values['type'] = 'article';
        $values['title'] = $this->randomMachineName();
        $values['status'] = TRUE;
        $values['promote'] = FALSE;
        $node = $this->nodeStorage
            ->create($values);
        $node->save();
        $not_expected_nids[] = $node->id();
        $values['promote'] = TRUE;
        $values['status'] = FALSE;
        $values['title'] = $this->randomMachineName();
        $node = $this->nodeStorage
            ->create($values);
        $node->save();
        $not_expected_nids[] = $node->id();
        $values['promote'] = TRUE;
        $values['sticky'] = TRUE;
        $values['status'] = FALSE;
        $values['title'] = $this->randomMachineName();
        $node = $this->nodeStorage
            ->create($values);
        $node->save();
        $not_expected_nids[] = $node->id();
        $column_map = [
            'nid' => 'nid',
        ];
        $view->setDisplay('page_1');
        $this->executeView($view);
        $this->assertIdenticalResultset($view, array_slice($expected, 0, 10), $column_map, 'Ensure that the right nodes are displayed on the frontpage.');
        $this->assertNotInResultSet($view, $not_expected_nids, 'Ensure no unexpected node is in the result.');
        $view->destroy();
        $view->setDisplay('page_1');
        $view->setCurrentPage(1);
        $this->executeView($view);
        $this->assertIdenticalResultset($view, array_slice($expected, 10, 10), $column_map, 'Ensure that the right nodes are displayed on second page of the frontpage.');
        $this->assertNotInResultSet($view, $not_expected_nids, 'Ensure no unexpected node is in the result.');
        $view->destroy();
    }
    
    /**
     * Verifies that an amount of nids aren't in the result.
     *
     * @param \Drupal\views\ViewExecutable $view
     *   An executed View.
     * @param array $not_expected_nids
     *   An array of nids which should not be part of the resultset.
     * @param string $message
     *   (optional) A custom message to display with the assertion.
     *
     * @internal
     */
    protected function assertNotInResultSet(ViewExecutable $view, array $not_expected_nids, string $message = '') : void {
        $found_nids = array_filter($view->result, function ($row) use ($not_expected_nids) {
            return in_array($row->nid, $not_expected_nids);
        });
        $this->assertEmpty($found_nids, $message);
    }
    
    /**
     * Tests the cache tags when using the "none" cache plugin.
     */
    public function testCacheTagsWithCachePluginNone() {
        $this->enablePageCaching();
        $this->doTestFrontPageViewCacheTags(FALSE);
    }
    
    /**
     * Tests the cache tags when using the "tag" cache plugin.
     */
    public function testCacheTagsWithCachePluginTag() {
        $this->enablePageCaching();
        $view = Views::getView('frontpage');
        $view->setDisplay('page_1');
        $view->display_handler
            ->overrideOption('cache', [
            'type' => 'tag',
        ]);
        $view->save();
        $this->doTestFrontPageViewCacheTags(TRUE);
    }
    
    /**
     * Tests the cache tags when using the "time" cache plugin.
     */
    public function testCacheTagsWithCachePluginTime() {
        $this->enablePageCaching();
        $view = Views::getView('frontpage');
        $view->setDisplay('page_1');
        $view->display_handler
            ->overrideOption('cache', [
            'type' => 'time',
            'options' => [
                'results_lifespan' => 3600,
                'output_lifespan' => 3600,
            ],
        ]);
        $view->save();
        $this->doTestFrontPageViewCacheTags(TRUE);
    }
    
    /**
     * Tests the cache tags on the front page.
     *
     * @param bool $do_assert_views_caches
     *   Whether to check Views' result & output caches.
     */
    protected function doTestFrontPageViewCacheTags($do_assert_views_caches) {
        $view = Views::getView('frontpage');
        $view->setDisplay('page_1');
        $cache_contexts = [
            // Cache contexts associated with the view.
'user.node_grants:view',
            'languages:' . LanguageInterface::TYPE_INTERFACE,
            // Cache contexts associated with the route's access checking.
'user.permissions',
            // Default cache contexts of the renderer.
'theme',
            'url.query_args',
            // Attached feed.
'url.site',
        ];
        $cache_context_tags = \Drupal::service('cache_contexts_manager')->convertTokensToKeys($cache_contexts)
            ->getCacheTags();
        // Test before there are any nodes.
        $empty_node_listing_cache_tags = [
            'config:views.view.frontpage',
            'node_list',
        ];
        $render_cache_tags = Cache::mergeTags($empty_node_listing_cache_tags, $cache_context_tags);
        $this->assertViewsCacheTags($view, $empty_node_listing_cache_tags, $do_assert_views_caches, $render_cache_tags);
        $expected_tags = Cache::mergeTags($empty_node_listing_cache_tags, $cache_context_tags);
        $expected_tags = Cache::mergeTags($expected_tags, [
            'http_response',
            'rendered',
            'config:user.role.anonymous',
        ]);
        $this->assertPageCacheContextsAndTags(Url::fromRoute('view.frontpage.page_1'), $cache_contexts, $expected_tags);
        // Create some nodes on the frontpage view. Add more than 10 nodes in order
        // to enable paging.
        $this->drupalCreateContentType([
            'type' => 'article',
        ]);
        for ($i = 0; $i < 15; $i++) {
            $node = Node::create([
                'body' => [
                    [
                        'value' => $this->randomMachineName(32),
                        'format' => filter_default_format(),
                    ],
                ],
                'type' => 'article',
                'created' => $i,
                'title' => $this->randomMachineName(8),
                'nid' => $i + 1,
            ]);
            $node->enforceIsNew(TRUE);
            $node->save();
        }
        $cache_contexts = Cache::mergeContexts($cache_contexts, [
            'timezone',
        ]);
        // First page.
        $first_page_result_cache_tags = [
            'config:views.view.frontpage',
            'node_list',
            'node:6',
            'node:7',
            'node:8',
            'node:9',
            'node:10',
            'node:11',
            'node:12',
            'node:13',
            'node:14',
            'node:15',
        ];
        $cache_context_tags = \Drupal::service('cache_contexts_manager')->convertTokensToKeys($cache_contexts)
            ->getCacheTags();
        $first_page_output_cache_tags = Cache::mergeTags($first_page_result_cache_tags, $cache_context_tags);
        $first_page_output_cache_tags = Cache::mergeTags($first_page_output_cache_tags, [
            'config:filter.format.plain_text',
            'node_view',
            'user_view',
            'user:0',
        ]);
        $view->setDisplay('page_1');
        $view->setCurrentPage(0);
        $this->assertViewsCacheTags($view, $first_page_result_cache_tags, $do_assert_views_caches, $first_page_output_cache_tags);
        $this->assertPageCacheContextsAndTags(Url::fromRoute('view.frontpage.page_1'), $cache_contexts, Cache::mergeTags($first_page_output_cache_tags, [
            'http_response',
            'rendered',
            'config:user.role.anonymous',
        ]));
        // Second page.
        $this->assertPageCacheContextsAndTags(Url::fromRoute('view.frontpage.page_1', [], [
            'query' => [
                'page' => 1,
            ],
        ]), $cache_contexts, [
            // The cache tags for the listed nodes.
'node:1',
            'node:2',
            'node:3',
            'node:4',
            'node:5',
            // The rest.
'config:filter.format.plain_text',
            'config:views.view.frontpage',
            'node_list',
            'node_view',
            'user_view',
            'user:0',
            'http_response',
            'rendered',
            // FinishResponseSubscriber adds this cache tag to responses that have the
            // 'user.permissions' cache context for anonymous users.
'config:user.role.anonymous',
        ]);
        // Let's update a node title on the first page and ensure that the page
        // cache entry invalidates.
        $node = Node::load(10);
        $title = $node->getTitle() . 'a';
        $node->setTitle($title);
        $node->save();
        $this->drupalGet(Url::fromRoute('view.frontpage.page_1'));
        $this->assertSession()
            ->pageTextContains($title);
    }

}