class ParagraphsLanguagePluginTest

class ParagraphsLanguagePluginTest extends ParagraphsTestBase {
  use \Drupal\Tests\field_ui\Traits\FieldUiTestTrait;

  /**
   * Modules to be enabled.
   *
   * @var array
   */
  protected static $modules = [
    'paragraphs_collection',
    'language',
  ];

  /**
   * Tests the Language plugin settings and functionality.
   */
  public function testVisibilityForLanguageSelection() {

    // Create a content type with a paragraphs field.
    $content_type = 'test_content_type';
    $paragraphs_field = 'test_paragraphs_field';
    $this
      ->addParagraphedContentType($content_type, $paragraphs_field);
    $this
      ->loginAsAdmin([
      'create ' . $content_type . ' content',
      'edit any ' . $content_type . ' content',
      'edit behavior plugin settings',
    ]);

    // Create a paragraphs type with a text field.
    $paragraphs_type = 'test_paragraphs_type';
    $this
      ->addParagraphsType($paragraphs_type);
    static::fieldUIAddNewField('admin/structure/paragraphs_type/' . $paragraphs_type, 'test_text_field', 'Text', 'text_long', [], []);

    // Enable the Language plugin.
    $this
      ->drupalGet('admin/structure/paragraphs_type/' . $paragraphs_type);
    $edit = [
      'behavior_plugins[language][enabled]' => TRUE,
    ];
    $this
      ->submitForm($edit, t('Save'));

    // Create a paragraphed content node.
    $this
      ->drupalGet('node/add/' . $content_type);
    $this
      ->submitForm([], $paragraphs_field . '_' . $paragraphs_type . '_add_more');
    $node_title = 'Test Node';
    $node_text = 'This is a text.';
    $edit = [
      'title[0][value]' => $node_title,
      $paragraphs_field . '[0][subform][field_test_text_field][0][value]' => $node_text,
    ];
    $this
      ->submitForm($edit, 'Save');

    // Check that we are on the node page and the text field content is visible.
    $this
      ->assertSession()
      ->titleEquals($node_title . ' | Drupal');
    $this
      ->assertSession()
      ->pageTextContains($node_text);

    // Check that the site has only one language and that the plugin's behavior
    // form is missing.
    $node_id = $this
      ->drupalGetNodeByTitle($node_title)
      ->id();
    $node_edit_path = 'node/' . $node_id . '/edit';
    $this
      ->drupalGet($node_edit_path);
    $language_manager = \Drupal::service('language_manager');
    $this
      ->assertFalse($language_manager
      ->isMultilingual(), 'The site is not multilingual.');
    $this
      ->assertSession()
      ->responseNotContains('Language visibility');

    // Add a second language (German) to the site.
    ConfigurableLanguage::createFromLangcode('de')
      ->save();

    // Attempt to hide with no languages selected.
    $this
      ->drupalGet($node_edit_path);
    $edit = [
      $paragraphs_field . '[0][behavior_plugins][language][container][visibility]' => 'hide',
    ];
    $this
      ->submitForm($edit, 'Save');

    // Check that the plugin's behavior form is now present.
    $this
      ->drupalGet($node_edit_path);
    $this
      ->assertTrue($language_manager
      ->isMultilingual(), 'The site is multilingual.');
    $this
      ->assertSession()
      ->pageTextContains('Language visibility');

    // Hide the text field with the Language plugin for English.
    $edit = [
      $paragraphs_field . '[0][behavior_plugins][language][container][visibility]' => 'hide',
      $paragraphs_field . '[0][behavior_plugins][language][container][languages][]' => [
        'en',
      ],
    ];
    $this
      ->submitForm($edit, 'Save');

    // Check that we are on the node page and the text field content is not
    // visible.
    $this
      ->assertSession()
      ->titleEquals($node_title . ' | Drupal');
    $this
      ->assertSession()
      ->responseNotContains($node_text);

    // Hide the text field with the Language plugin for all languages but
    // German.
    $this
      ->drupalGet($node_edit_path);
    $this
      ->assertSession()
      ->responseContains('<span class="summary-plugin-label">Hide for</span>English</span');
    $edit = [
      $paragraphs_field . '[0][behavior_plugins][language][container][visibility]' => 'show',
      $paragraphs_field . '[0][behavior_plugins][language][container][languages][]' => [
        'de',
      ],
    ];
    $this
      ->submitForm($edit, 'Save');

    // Check that we are on the node page and the text field content is again
    // not visible.
    $this
      ->assertSession()
      ->titleEquals($node_title . ' | Drupal');

    // The paragraph with visibility conditions is not accessible anymore.
    $this
      ->assertSession()
      ->responseNotContains($node_text);
    $this
      ->assertSession()
      ->responseNotContains('paragraph--type--test-paragraphs-type');
    $this
      ->assertSession()
      ->responseNotContains('<div class="field__label">test_paragraphs_field</div>');
    $this
      ->drupalGet($node_edit_path);
    $this
      ->assertSession()
      ->responseContains('<span class="summary-plugin-label">Show for</span>German</span');
  }

}