function FormValuesTest::testSimpleInvalidCallbacksAjaxFormValue

Tests that AJAX elements with invalid callbacks return error code 500.

File

core/tests/Drupal/FunctionalJavascriptTests/Ajax/FormValuesTest.php, line 81

Class

FormValuesTest

Tests that form values are properly delivered to AJAX callbacks.

Namespace

Code

public function testSimpleInvalidCallbacksAjaxFormValue() : void {
  $this->drupalGet('ajax_forms_test_get_form');
  $session = $this->getSession();
  // Ensure the test error log is empty before these tests.
  $this->assertFileDoesNotExist(DRUPAL_ROOT . '/' . $this->siteDirectory . '/error.log');
  // We're going to do some invalid requests. The JavaScript errors thrown
  // whilst doing so are expected. Do not interpret them as a test failure.
  $this->failOnJavascriptConsoleErrors = FALSE;
  // We don't need to check for the X-Drupal-Ajax-Token header with these
  // invalid requests.
  foreach ([
    'null',
    'empty',
    'nonexistent',
  ] as $key) {
    $element_name = 'select_' . $key . '_callback';
    // Updating the field will trigger an AJAX request/response.
    $session->getPage()
      ->selectFieldOption($element_name, 'green');
    // The select element is disabled as the AJAX request is issued.
    $this->assertSession()
      ->waitForElement('css', "select[name=\"{$element_name}\"]:disabled");
    // The select element is enabled as the response is received.
    $this->assertSession()
      ->waitForElement('css', "select[name=\"{$element_name}\"]:enabled");
    // Not using File API, a potential error must trigger a PHP warning, which
    // should be logged in the error.log.
    $this->assertFileExists(DRUPAL_ROOT . '/' . $this->siteDirectory . '/error.log');
    $this->assertStringContainsString('"The specified #ajax callback is empty or not callable."', file_get_contents(DRUPAL_ROOT . '/' . $this->siteDirectory . '/error.log'));
    // Remove error.log, so we have a clean slate for the next request.
    unlink(\Drupal::root() . '/' . $this->siteDirectory . '/error.log');
  }
  // We need to reload the page to kill any unfinished AJAX calls before
  // tearDown() is called.
  $this->drupalGet('ajax_forms_test_get_form');
}