class UpdateSchemaTest

class UpdateSchemaTest extends BrowserTestBase {
  use RequirementsPageTrait;
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'update_test_schema',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * @var \Drupal\user\UserInterface
   */
  protected $user;
  
  /**
   * The update URL.
   *
   * @var string
   */
  protected $updateUrl;
  
  /**
   * {@inheritdoc}
   */
  protected function setUp() : void {
    parent::setUp();
    require_once $this->root . '/core/includes/update.inc';
    $this->user = $this->drupalCreateUser([
      'administer software updates',
      'access site in maintenance mode',
    ]);
    $this->updateUrl = Url::fromRoute('system.db_update');
  }
  
  /**
   * Tests that update hooks are properly run.
   */
  public function testUpdateHooks() {
    $connection = Database::getConnection();
    /** @var \Drupal\Core\Update\UpdateHookRegistry $update_registry */
    $update_registry = \Drupal::service('update.update_hook_registry');
    // Verify that the 8000 schema is in place.
    $this->assertEquals(8000, $update_registry->getInstalledVersion('update_test_schema'));
    $this->assertFalse($connection->schema()
      ->indexExists('update_test_schema_table', 'test'), 'Version 8000 of the update_test_schema module is installed.');
    // Increment the schema version.
    \Drupal::state()->set('update_test_schema_version', 8001);
    $this->drupalLogin($this->user);
    $this->drupalGet($this->updateUrl, [
      'external' => TRUE,
    ]);
    $this->updateRequirementsProblem();
    $this->clickLink('Continue');
    $this->assertSession()
      ->pageTextContains('Schema version 8001.');
    // Run the update hooks.
    $this->clickLink('Apply pending updates');
    $this->checkForMetaRefresh();
    // Ensure schema has changed.
    $this->resetAll();
    /** @var \Drupal\Core\Update\UpdateHookRegistry $update_registry */
    $update_registry = \Drupal::service('update.update_hook_registry');
    $this->assertEquals(8001, $update_registry->getInstalledVersion('update_test_schema'));
    // Ensure the index was added for column a.
    $this->assertTrue($connection->schema()
      ->indexExists('update_test_schema_table', 'test'), 'Version 8001 of the update_test_schema module is installed.');
  }

}