class EmphasisTest

class EmphasisTest extends WebDriverTestBase {
    use CKEditor5TestTrait;
    
    /**
     * The user to use during testing.
     *
     * @var \Drupal\user\UserInterface
     */
    protected $adminUser;
    
    /**
     * A host entity with a body field to use the <em> tag in.
     *
     * @var \Drupal\node\NodeInterface
     */
    protected $host;
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'ckeditor5',
        'node',
        'text',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        FilterFormat::create([
            'format' => 'test_format',
            'name' => 'Test format',
            'filters' => [
                'filter_html' => [
                    'status' => TRUE,
                    'settings' => [
                        'allowed_html' => '<p> <br> <em>',
                    ],
                ],
            ],
        ])->save();
        Editor::create([
            'editor' => 'ckeditor5',
            'format' => 'test_format',
            'settings' => [
                'toolbar' => [
                    'items' => [
                        'italic',
                        'sourceEditing',
                    ],
                ],
                'plugins' => [
                    'ckeditor5_sourceEditing' => [
                        'allowed_tags' => [],
                    ],
                ],
            ],
        ])->save();
        $this->assertSame([], array_map(function (ConstraintViolation $v) {
            return (string) $v->getMessage();
        }, iterator_to_array(CKEditor5::validatePair(Editor::load('test_format'), FilterFormat::load('test_format')))));
        $this->adminUser = $this->drupalCreateUser([
            'use text format test_format',
            'bypass node access',
        ]);
        $this->drupalCreateContentType([
            'type' => 'blog',
        ]);
        $this->host = $this->createNode([
            'type' => 'blog',
            'title' => 'Animals with strange names',
            'body' => [
                'value' => '<p>This is a <em>test!</em></p>',
                'format' => 'test_format',
            ],
        ]);
        $this->host
            ->save();
        $this->drupalLogin($this->adminUser);
    }
    
    /**
     * Ensures that CKEditor italic model is converted to em.
     */
    public function testEmphasis() : void {
        $page = $this->getSession()
            ->getPage();
        $assert_session = $this->assertSession();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $emphasis_element = $assert_session->waitForElementVisible('css', '.ck-content p em');
        $this->assertEquals('test!', $emphasis_element->getText());
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $emphasis_source = $xpath->query('//p/em');
        $this->assertNotEmpty($emphasis_source);
        $this->assertEquals('test!', $emphasis_source[0]->textContent);
        $page->pressButton('Save');
        $assert_session->responseContains('<p>This is a <em>test!</em></p>');
    }
    
    /**
     * Tests that arbitrary attributes are allowed via GHS.
     */
    public function testEmphasisArbitraryHtml() : void {
        $assert_session = $this->assertSession();
        $editor = Editor::load('test_format');
        $settings = $editor->getSettings();
        // Allow the data-foo attribute in img via GHS.
        $settings['plugins']['ckeditor5_sourceEditing']['allowed_tags'] = [
            '<em data-foo>',
        ];
        $editor->setSettings($settings);
        $editor->save();
        // Add data-foo use to an existing em tag.
        $original_value = $this->host->body->value;
        $this->host->body->value = str_replace('<em>', '<em data-foo="bar">', $original_value);
        $this->host
            ->save();
        $this->drupalGet($this->host
            ->toUrl('edit-form'));
        $this->waitForEditor();
        $emphasis_element = $assert_session->waitForElementVisible('css', '.ck-content p em');
        $this->assertEquals('bar', $emphasis_element->getAttribute('data-foo'));
        $xpath = new \DOMXPath($this->getEditorDataAsDom());
        $this->assertNotEmpty($xpath->query('//em[@data-foo="bar"]'));
    }

}