class CacheWebTest

class CacheWebTest extends ViewTestBase {
    use AssertPageCacheContextsAndTagsTrait;
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_display',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'taxonomy',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE, $modules = [
        'views_test_config',
    ]) : void {
        parent::setUp($import_test_views, $modules);
        $this->enableViewsTestModule();
    }
    
    /**
     * Tests the output caching on an actual page.
     */
    public function testCacheOutputOnPage() : void {
        $view = Views::getView('test_display');
        $view->storage
            ->setStatus(TRUE);
        $view->setDisplay('page_1');
        $view->display_handler
            ->overrideOption('cache', [
            'type' => 'time',
            'options' => [
                'results_lifespan' => '3600',
                'output_lifespan' => '3600',
            ],
        ]);
        $view->save();
        $this->container
            ->get('router.builder')
            ->rebuildIfNeeded();
        
        /** @var \Drupal\Core\Render\RenderCacheInterface $render_cache */
        $render_cache = \Drupal::service('render_cache');
        $cache_element = DisplayPluginBase::buildBasicRenderable('test_display', 'page_1');
        $cache_element['#cache'] += [
            'contexts' => $this->container
                ->getParameter('renderer.config')['required_cache_contexts'],
        ];
        $this->assertFalse($render_cache->get($cache_element));
        $this->drupalGet('test-display');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertNotEmpty($render_cache->get($cache_element));
        $cache_tags = [
            'config:user.role.anonymous',
            'config:views.view.test_display',
            'node_list',
            'rendered',
        ];
        $this->assertCacheTags($cache_tags);
        $this->drupalGet('test-display');
        $this->assertSession()
            ->statusCodeEquals(200);
        $this->assertNotEmpty($render_cache->get($cache_element));
        $this->assertCacheTags($cache_tags);
    }
    
    /**
     * Tests that a display without caching still contains the cache metadata.
     */
    public function testDisplayWithoutCacheStillBubblesMetadata() : void {
        $view = Views::getView('test_display');
        $uncached_block = $view->buildRenderable('block_1', [], FALSE);
        $cached_block = $view->buildRenderable('block_1', [], TRUE);
        $this->assertEquals($uncached_block['#cache']['contexts'], $cached_block['#cache']['contexts'], 'Cache contexts are the same when you render the view cached and uncached.');
    }

}