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<?php
namespace Drupal\system\Tests\Ajax;
use Drupal\Core\Ajax\DataCommand;
/**
* Tests that form values are properly delivered to AJAX callbacks.
*
* @group Ajax
*/
class FormValuesTest extends AjaxTestBase {
protected function setUp() {
parent::setUp();
$this->drupalLogin($this->drupalCreateUser(['access content']));
}
/**
* Submits forms with select and checkbox elements via Ajax.
*/
public function testSimpleAjaxFormValue() {
// Verify form values of a select element.
foreach (['red', 'green', 'blue'] as $item) {
$edit = [
'select' => $item,
];
$commands = $this->drupalPostAjaxForm('ajax_forms_test_get_form', $edit, 'select');
$expected = new DataCommand('#ajax_selected_color', 'form_state_value_select', $item);
$this->assertCommand($commands, $expected->render(), 'Verification of AJAX form values from a selectbox issued with a correct value.');
}
// Verify form values of a checkbox element.
foreach ([FALSE, TRUE] as $item) {
$edit = [
'checkbox' => $item,
];
$commands = $this->drupalPostAjaxForm('ajax_forms_test_get_form', $edit, 'checkbox');
$expected = new DataCommand('#ajax_checkbox_value', 'form_state_value_select', (int) $item);
$this->assertCommand($commands, $expected->render(), 'Verification of AJAX form values from a checkbox issued with a correct value.');
}
// Verify that AJAX elements with invalid callbacks return error code 500.
// Ensure the test error log is empty before these tests.
$this->assertNoErrorsLogged();
// We don't need to check for the X-Drupal-Ajax-Token header with these
// invalid requests.
$this->assertAjaxHeader = FALSE;
foreach (['null', 'empty', 'nonexistent'] as $key) {
$element_name = 'select_' . $key . '_callback';
$edit = [
$element_name => 'red',
];
$commands = $this->drupalPostAjaxForm('ajax_forms_test_get_form', $edit, $element_name);
$this->assertResponse(500);
}
// Switch this back to the default.
$this->assertAjaxHeader = TRUE;
// The exceptions are expected. Do not interpret them as a test failure.
// Not using File API; a potential error must trigger a PHP warning.
unlink(\Drupal::root() . '/' . $this->siteDirectory . '/error.log');
}
}