1 form.test FormsRebuildTestCase::testPreserveFormActionAfterAJAX()

Tests that a form's action is retained after an Ajax submission.

The 'action' attribute of a form should not change after an Ajax submission followed by a non-Ajax submission, which triggers a validation error.


core/modules/simpletest/tests/form.test, line 1640
Unit tests for the Backdrop Form API.


Tests form rebuilding.


function testPreserveFormActionAfterAJAX() {
  // Create a multi-valued field for 'page' nodes to use for Ajax testing.
  $field_name = 'field_ajax_test';
  $field = array(
    'field_name' => $field_name,
    'type' => 'text',
  $instance = array(
    'field_name' => $field_name,
    'entity_type' => 'node',
    'bundle' => 'page',

  // Log in a user who can create 'page' nodes.
  $this->web_user = $this->backdropCreateUser(array('create page content'));

  // Get the form for adding a 'page' node. Submit an "add another item" Ajax
  // submission and verify it worked by ensuring the updated page has two text
  // field items in the field for which we just added an item.
  $this->backdropPostAJAX(NULL, array(), array('field_ajax_test_add_more' => t('Add another item')), 'system/ajax', array(), array(), 'page-node-form');
  $this->assert(count($this->xpath('//div[contains(@class, "field-name-field-ajax-test")]//input[@type="text"]')) == 2, 'AJAX submission succeeded.');

  // Submit the form with the non-Ajax "Save" button, leaving the title field
  // blank to trigger a validation error, and ensure that a validation error
  // occurred, because this test is for testing what happens when a form is
  // re-rendered without being re-built, which is what happens when there's
  // a validation error.
  $this->backdropPost(NULL, array(), t('Save'));
  $this->assertText('Title field is required.', 'Non-AJAX submission correctly triggered a validation error.');

  // Ensure that the form contains two items in the multi-valued field, so we
  // know we're testing a form that was correctly retrieved from cache.
  $this->assert(count($this->xpath('//form[contains(@id, "page-node-form")]//div[contains(@class, "form-item-field-ajax-test")]//input[@type="text"]')) == 2, 'Form retained its state from cache.');

  // Ensure that the form's action is correct.
  $forms = $this->xpath('//form[contains(@class, "node-page-form")]');
  $this->assert(count($forms) == 1 && $forms[0]['action'] == url('node/add/page'), 'Re-rendered form contains the correct action value.');