'#type' => 'submit',
'#value' => t('Submit'),
];
+ $form['#post_render'][] = [static::class, 'postRender'];
return $form;
}
+ /**
+ * Alters the rendered form to simulate input forgery.
+ *
+ * It's necessary to alter the rendered form here because Mink does not
+ * support manipulating the DOM tree.
+ *
+ * @param string $rendered_form
+ * The rendered form.
+ *
+ * @return string
+ * The modified rendered form.
+ *
+ * @see \Drupal\Tests\system\Functional\Form\FormTest::testInputForgery()
+ */
+ public static function postRender($rendered_form) {
+ return str_replace('value="two"', 'value="FORGERY"', $rendered_form);
+ }
+
/**
* {@inheritdoc}
*/