MultiFormTest.php

<?php

/**
 * @file
 * Definition of Drupal\system\Tests\Ajax\MultiFormTest.
 */
namespace Drupal\system\Tests\Ajax;


/**
 * Tests Ajax-enabled forms functionality with multiple instances of the form.
 */
class MultiFormTest extends AjaxTestBase {

  /**
   * Modules to enable.
   *
   * @var array
   */
  public static $modules = array(
    'form_test',
  );
  public static function getInfo() {
    return array(
      'name' => 'AJAX multi form',
      'description' => 'Tests that AJAX-enabled forms work when multiple instances of the same form are on a page.',
      'group' => 'AJAX',
    );
  }
  function setUp() {
    parent::setUp();
    $this
      ->drupalCreateContentType(array(
      'type' => 'page',
      'name' => 'Page',
    ));

    // Create a multi-valued field for 'page' nodes to use for Ajax testing.
    $field_name = 'field_ajax_test';
    $field = array(
      'field_name' => $field_name,
      'type' => 'text',
      'cardinality' => FIELD_CARDINALITY_UNLIMITED,
    );
    field_create_field($field);
    $instance = array(
      'field_name' => $field_name,
      'entity_type' => 'node',
      'bundle' => 'page',
    );
    field_create_instance($instance);
    entity_get_form_display('node', 'page', 'default')
      ->setComponent($field_name, array(
      'type' => 'text_default',
    ))
      ->save();

    // Login a user who can create 'page' nodes.
    $this->web_user = $this
      ->drupalCreateUser(array(
      'create page content',
    ));
    $this
      ->drupalLogin($this->web_user);
  }

  /**
   * Tests that pages with the 'page_node_form' included twice work correctly.
   */
  function testMultiForm() {

    // HTML IDs for elements within the field are potentially modified with
    // each Ajax submission, but these variables are stable and help target the
    // desired elements.
    $field_name = 'field_ajax_test';
    $field_xpaths = array(
      'page-node-form' => '//form[@id="page-node-form"]//div[contains(@class, "field-name-field-ajax-test")]',
      'page-node-form--2' => '//form[@id="page-node-form--2"]//div[contains(@class, "field-name-field-ajax-test")]',
    );
    $button_name = $field_name . '_add_more';
    $button_value = t('Add another item');
    $button_xpath_suffix = '//input[@name="' . $button_name . '"]';
    $field_items_xpath_suffix = '//input[@type="text"]';

    // Ensure the initial page contains both node forms and the correct number
    // of field items and "add more" button for the multi-valued field within
    // each form.
    $this
      ->drupalGet('form-test/two-instances-of-same-form');
    foreach ($field_xpaths as $form_html_id => $field_xpath) {
      $this
        ->assert(count($this
        ->xpath($field_xpath . $field_items_xpath_suffix)) == 1, 'Found the correct number of field items on the initial page.');
      $this
        ->assertFieldByXPath($field_xpath . $button_xpath_suffix, NULL, 'Found the "add more" button on the initial page.');
    }
    $this
      ->assertNoDuplicateIds(t('Initial page contains unique IDs'), 'Other');

    // Submit the "add more" button of each form twice. After each corresponding
    // page update, ensure the same as above.
    foreach ($field_xpaths as $form_html_id => $field_xpath) {
      for ($i = 0; $i < 2; $i++) {
        $this
          ->drupalPostAJAX(NULL, array(), array(
          $button_name => $button_value,
        ), 'system/ajax', array(), array(), $form_html_id);
        $this
          ->assert(count($this
          ->xpath($field_xpath . $field_items_xpath_suffix)) == $i + 2, 'Found the correct number of field items after an AJAX submission.');
        $this
          ->assertFieldByXPath($field_xpath . $button_xpath_suffix, NULL, 'Found the "add more" button after an AJAX submission.');
        $this
          ->assertNoDuplicateIds(t('Updated page contains unique IDs'), 'Other');
      }
    }
  }

}