class UserPermissionsTest

class UserPermissionsTest extends WebDriverTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * User with admin privileges.
   *
   * @var \Drupal\user\UserInterface
   */
  protected $adminUser;
  
  /**
   * User's role ID.
   *
   * @var string
   */
  protected $rid;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    $this->adminUser = $this->drupalCreateUser([
      'administer permissions',
    ]);
    // Find the new role ID.
    $all_rids = $this->adminUser
      ->getRoles();
    unset($all_rids[array_search(RoleInterface::AUTHENTICATED_ID, $all_rids)]);
    $this->rid = reset($all_rids);
  }
  
  /**
   * Tests the dummy checkboxes added to the permissions page.
   */
  public function testPermissionCheckboxes() {
    $this->drupalLogin($this->adminUser);
    $this->drupalGet('admin/people/permissions');
    $page = $this->getSession()
      ->getPage();
    $wrapper = $page->find('css', '.form-item-' . $this->rid . '-administer-modules');
    $real_checkbox = $wrapper->find('css', '.real-checkbox');
    $dummy_checkbox = $wrapper->find('css', '.dummy-checkbox');
    // The real per-role checkbox is visible and unchecked, the dummy copy is
    // invisible.
    $this->assertTrue($real_checkbox->isVisible());
    $this->assertFalse($real_checkbox->isChecked());
    $this->assertFalse($dummy_checkbox->isVisible());
    // Enable the permission for all authenticated users.
    $page->findField('authenticated[administer modules]')
      ->click();
    // The real and dummy checkboxes switch visibility and the dummy is now both
    // checked and disabled.
    $this->assertFalse($real_checkbox->isVisible());
    $this->assertTrue($dummy_checkbox->isVisible());
    $this->assertTrue($dummy_checkbox->isChecked());
    $this->assertTrue($dummy_checkbox->hasAttribute('disabled'));
  }

}