class DisplayFeedTranslationTest

class DisplayFeedTranslationTest extends ViewTestBase {
    use ContentTranslationTestTrait;
    use PathAliasTestTrait;
    use WaitTerminateTestTrait;
    
    /**
     * Views used by this test.
     *
     * @var array
     */
    public static $testViews = [
        'test_display_feed',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'node',
        'views',
        'language',
        'content_translation',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * The added languages.
     *
     * @var string[]
     */
    protected $langcodes;
    
    /**
     * {@inheritdoc}
     */
    protected function setUp($import_test_views = TRUE, $modules = [
        'views_test_config',
    ]) : void {
        parent::setUp($import_test_views, $modules);
        $this->enableViewsTestModule();
        $this->langcodes = [
            'es',
            'pt-br',
        ];
        foreach ($this->langcodes as $langcode) {
            static::createLanguageFromLangcode($langcode);
        }
        $admin_user = $this->drupalCreateUser([
            'administer site configuration',
            'administer nodes',
            'administer content translation',
            'translate any entity',
            'create content translations',
            'administer languages',
        ]);
        $this->drupalLogin($admin_user);
        $this->drupalCreateContentType([
            'type' => 'page',
        ]);
        // Enable translation for page.
        static::enableContentTranslation('node', 'page');
        // Rebuild the container so that the new languages are picked up by services
        // that hold a list of languages.
        $this->rebuildContainer();
        // The \Drupal\path_alias\AliasPrefixList service performs cache clears
        // after Drupal has flushed the response to the client. We use
        // WaitTerminateTestTrait to wait for Drupal to do this before continuing.
        $this->setWaitForTerminate();
    }
    
    /**
     * Tests the rendered output for fields display with multiple translations.
     */
    public function testFeedFieldOutput() : void {
        $node = $this->drupalCreateNode([
            'type' => 'page',
            'title' => 'en',
            'body' => [
                0 => [
                    'value' => 'Something in English.',
                    'format' => filter_default_format(),
                ],
            ],
            'langcode' => 'en',
        ]);
        $es_translation = $node->addTranslation('es');
        $es_translation->set('title', 'es');
        $es_translation->set('body', [
            [
                'value' => 'Algo en Español',
            ],
        ]);
        $es_translation->save();
        $pt_br_translation = $node->addTranslation('pt-br');
        $pt_br_translation->set('title', 'pt-br');
        $pt_br_translation->set('body', [
            [
                'value' => 'Algo em Português',
            ],
        ]);
        $pt_br_translation->save();
        // First, check everything with raw node paths (e.g. node/1).
        $this->checkFeedResults('raw-node-path', $node);
        // Now, create path aliases for each translation.
        $node_path = '/node/' . $node->id();
        $this->createPathAlias($node_path, "{$node_path}/en-alias");
        $this->createPathAlias($node_path, "{$node_path}/es-alias", 'es');
        $this->createPathAlias($node_path, "{$node_path}/pt-br-alias", 'pt-br');
        // Save the node again, to clear the cache on the feed.
        $node->save();
        // Assert that all the results are correct using path aliases.
        $this->checkFeedResults('path-alias', $node);
    }
    
    /**
     * Checks the feed results for the given style of node links.
     *
     * @param string $link_style
     *   What style of links do we expect? Either 'raw-node-path' or 'path-alias'.
     *   Only used for human-readable assert failure messages.
     * @param \Drupal\node\Entity\Node $node
     *   The node entity that's been created.
     */
    protected function checkFeedResults($link_style, Node $node) : void {
        
        /** @var \Drupal\Core\Language\LanguageManagerInterface $languageManager */
        $language_manager = \Drupal::languageManager()->reset();
        $node_links = [];
        $node_links['en'] = $node->toUrl()
            ->setAbsolute()
            ->toString();
        foreach ($this->langcodes as $langcode) {
            $node_links[$langcode] = $node->toUrl()
                ->setOption('language', $language_manager->getLanguage($langcode))
                ->setAbsolute()
                ->toString();
        }
        $expected = [
            'pt-br' => [
                'description' => '<p>Algo em Português</p>',
            ],
            'es' => [
                'description' => '<p>Algo en Español</p>',
            ],
            'en' => [
                'description' => '<p>Something in English.</p>',
            ],
        ];
        foreach ($node_links as $langcode => $link) {
            $expected[$langcode]['link'] = $link;
        }
        $this->drupalGet('test-feed-display-fields.xml');
        $this->assertSession()
            ->statusCodeEquals(200);
        $items = $this->getSession()
            ->getDriver()
            ->find('//channel/item');
        // There should only be 3 items in the feed.
        $this->assertCount(3, $items, "{$link_style}: 3 items in feed");
        // Don't rely on the sort order of the items in the feed. Instead, each
        // item's title is the langcode for that item. Iterate over all the items,
        // get the title text for each one, make sure we're expecting each langcode
        // we find, and then assert that the rest of the content of that item is
        // what we expect for the given langcode.
        foreach ($items as $item) {
            $title_element = $item->findAll('xpath', 'title');
            $this->assertCount(1, $title_element, "{$link_style}: Missing title element");
            $langcode = $title_element[0]->getText();
            $this->assertArrayHasKey($langcode, $expected, "{$link_style}: Missing expected output for {$langcode}");
            foreach ($expected[$langcode] as $key => $expected_value) {
                $elements = $item->findAll('xpath', $key);
                $this->assertCount(1, $elements, "{$link_style}: Xpath {$key} missing");
                $this->assertEquals($expected_value, $elements[0]->getText(), "{$link_style}: Unexpected value for {$key}");
            }
        }
    }

}