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<?php
namespace Drupal\system\Tests\Ajax;
use Drupal\Core\Field\FieldStorageDefinitionInterface;
use Drupal\field\Entity\FieldConfig;
use Drupal\field\Entity\FieldStorageConfig;
/**
* Tests that AJAX-enabled forms work when multiple instances of the same form
* are on a page.
*
* @group Ajax
*/
class MultiFormTest extends AjaxTestBase {
/**
* Modules to enable.
*
* @var array
*/
public static $modules = ['form_test'];
protected function setUp() {
parent::setUp();
$this->drupalCreateContentType(['type' => 'page', 'name' => 'Page']);
// Create a multi-valued field for 'page' nodes to use for Ajax testing.
$field_name = 'field_ajax_test';
FieldStorageConfig::create([
'entity_type' => 'node',
'field_name' => $field_name,
'type' => 'text',
'cardinality' => FieldStorageDefinitionInterface::CARDINALITY_UNLIMITED,
])->save();
FieldConfig::create([
'field_name' => $field_name,
'entity_type' => 'node',
'bundle' => 'page',
])->save();
entity_get_form_display('node', 'page', 'default')
->setComponent($field_name, ['type' => 'text_textfield'])
->save();
// Log in a user who can create 'page' nodes.
$this->drupalLogin ($this->drupalCreateUser(['create page content']));
}
/**
* Tests that pages with the 'node_page_form' included twice work correctly.
*/
public 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';
$form_xpath = '//form[starts-with(@id, "node-page-form")]';
$field_xpath = '//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');
$fields = $this->xpath($form_xpath . $field_xpath);
$this->assertEqual(count($fields), 2);
foreach ($fields as $field) {
$this->assertEqual(count($field->xpath('.' . $field_items_xpath_suffix)), 1, 'Found the correct number of field items on the initial page.');
$this->assertFieldsByValue($field->xpath('.' . $button_xpath_suffix), NULL, 'Found the "add more" button on the initial page.');
}
$this->assertNoDuplicateIds(t('Initial page contains unique IDs'), 'Other');
// Submit the "add more" button of each form twice. After each corresponding
// page update, ensure the same as above.
for ($i = 0; $i < 2; $i++) {
$forms = $this->xpath($form_xpath);
foreach ($forms as $offset => $form) {
$form_html_id = (string) $form['id'];
$this->drupalPostAjaxForm(NULL, [], [$button_name => $button_value], NULL, [], [], $form_html_id);
$form = $this->xpath($form_xpath)[$offset];
$field = $form->xpath('.' . $field_xpath);
$this->assertEqual(count($field[0]->xpath('.' . $field_items_xpath_suffix)), $i + 2, 'Found the correct number of field items after an AJAX submission.');
$this->assertFieldsByValue($field[0]->xpath('.' . $button_xpath_suffix), NULL, 'Found the "add more" button after an AJAX submission.');
$this->assertNoDuplicateIds(t('Updated page contains unique IDs'), 'Other');
}
}
}
}