class ContentTranslationLanguageChangeTest

class ContentTranslationLanguageChangeTest extends NodeTestBase {
    use ContentTranslationTestTrait;
    use ImageFieldCreationTrait;
    use TestFileCreationTrait {
        getTestFiles as drupalGetTestFiles;
    }
    
    /**
     * {@inheritdoc}
     */
    protected static $modules = [
        'language',
        'content_translation',
        'content_translation_test',
        'node',
        'block',
        'field_ui',
        'image',
    ];
    
    /**
     * {@inheritdoc}
     */
    protected $defaultTheme = 'stark';
    
    /**
     * {@inheritdoc}
     */
    protected function setUp() : void {
        parent::setUp();
        $langcodes = [
            'de',
            'fr',
        ];
        foreach ($langcodes as $langcode) {
            static::createLanguageFromLangcode($langcode);
        }
        $this->drupalPlaceBlock('local_tasks_block');
        $user = $this->drupalCreateUser([
            'administer site configuration',
            'administer nodes',
            'create article content',
            'edit any article content',
            'delete any article content',
            'administer content translation',
            'translate any entity',
            'create content translations',
            'administer languages',
            'administer content types',
            'administer node fields',
        ]);
        $this->drupalLogin($user);
        // Enable translations for article.
        $this->enableContentTranslation('node', 'article');
        $this->rebuildContainer();
        $this->createImageField('field_image_field', 'node', 'article');
    }
    
    /**
     * Tests that the source language is properly set when changing.
     */
    public function testLanguageChange() : void {
        // Create a node in English.
        $this->drupalGet('node/add/article');
        $edit = [
            'title[0][value]' => 'english_title',
        ];
        $this->submitForm($edit, 'Save');
        // Create a translation in French.
        $this->clickLink('Translate');
        $this->clickLink('Add');
        $this->submitForm([], 'Save (this translation)');
        $this->clickLink('Translate');
        // Edit English translation.
        $this->clickLink('Edit', 1);
        // Upload and image after changing the node language.
        $images = $this->drupalGetTestFiles('image')[1];
        $edit = [
            'langcode[0][value]' => 'de',
            'files[field_image_field_0]' => $images->uri,
        ];
        $this->submitForm($edit, 'Upload');
        $this->submitForm([
            'field_image_field[0][alt]' => 'alternative_text',
        ], 'Save (this translation)');
        // Check that the translation languages are correct.
        $node = $this->getNodeByTitle('english_title');
        $translation_languages = $node->getTranslationLanguages();
        $this->assertArrayHasKey('fr', $translation_languages);
        $this->assertArrayHasKey('de', $translation_languages);
    }
    
    /**
     * Tests that title does not change on ajax call with new language value.
     */
    public function testTitleDoesNotChangesOnChangingLanguageWidgetAndTriggeringAjaxCall() : void {
        // Create a node in English.
        $this->drupalGet('node/add/article', [
            'query' => [
                'test_field_only_en_fr' => 1,
            ],
        ]);
        $edit = [
            'title[0][value]' => 'english_title',
            'test_field_only_en_fr' => 'node created',
        ];
        $this->submitForm($edit, 'Save');
        $this->assertEquals('node created', \Drupal::state()->get('test_field_only_en_fr'));
        // Create a translation in French.
        $this->clickLink('Translate');
        $this->clickLink('Add');
        $this->submitForm([], 'Save (this translation)');
        $this->clickLink('Translate');
        // Edit English translation.
        $node = $this->getNodeByTitle('english_title');
        $this->drupalGet('node/' . $node->id() . '/edit');
        // Test the expected title when loading the form.
        $this->assertSession()
            ->titleEquals('Edit Article english_title | Drupal');
        // Upload and image after changing the node language.
        $images = $this->drupalGetTestFiles('image')[1];
        $edit = [
            'langcode[0][value]' => 'de',
            'files[field_image_field_0]' => $images->uri,
        ];
        $this->submitForm($edit, 'Upload');
        // Test the expected title after triggering an ajax call with a new
        // language selected.
        $this->assertSession()
            ->titleEquals('Edit Article english_title | Drupal');
        $edit = [
            'langcode[0][value]' => 'en',
            'field_image_field[0][alt]' => 'alternative_text',
        ];
        $this->submitForm($edit, 'Save (this translation)');
        // Check that the translation languages are correct.
        $node = $this->getNodeByTitle('english_title');
        $translation_languages = $node->getTranslationLanguages();
        $this->assertArrayHasKey('fr', $translation_languages);
        $this->assertArrayNotHasKey('de', $translation_languages);
    }

}