DependencyTest.php

<?php

declare (strict_types=1);
namespace Drupal\Tests\forum\Functional\Module;

use Drupal\Tests\system\Functional\Module\ModuleTestBase;

/**
 * Enable module without dependency enabled.
 *
 * @group form
 * @group legacy
 */
class DependencyTest extends ModuleTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Tests attempting to uninstall a module that has installed dependents.
   */
  public function testUninstallDependents() : void {
    // Enable the forum module.
    $edit = [
      'modules[forum][enable]' => 'forum',
    ];
    $this->drupalGet('admin/modules');
    $this->submitForm($edit, 'Install');
    $this->submitForm([], 'Continue');
    $this->assertModules([
      'forum',
    ], TRUE);
    // Check that the comment module cannot be uninstalled.
    $this->drupalGet('admin/modules/uninstall');
    $this->assertSession()
      ->fieldDisabled('uninstall[comment]');
    // Delete any forum terms.
    $vid = $this->config('forum.settings')
      ->get('vocabulary');
    // Ensure taxonomy has been loaded into the test-runner after forum was
    // enabled.
    \Drupal::moduleHandler()->load('taxonomy');
    $storage = \Drupal::entityTypeManager()->getStorage('taxonomy_term');
    $terms = $storage->loadByProperties([
      'vid' => $vid,
    ]);
    $storage->delete($terms);
    // Uninstall the forum module, and check that taxonomy now can also be
    // uninstalled.
    $edit = [
      'uninstall[forum]' => 'forum',
    ];
    $this->drupalGet('admin/modules/uninstall');
    $this->submitForm($edit, 'Uninstall');
    $this->submitForm([], 'Uninstall');
    $this->assertSession()
      ->pageTextContains('The selected modules have been uninstalled.');
    // Uninstall comment module.
    $edit = [
      'uninstall[comment]' => 'comment',
    ];
    $this->drupalGet('admin/modules/uninstall');
    $this->submitForm($edit, 'Uninstall');
    $this->submitForm([], 'Uninstall');
    $this->assertSession()
      ->pageTextContains('The selected modules have been uninstalled.');
  }

}