Tests the form cache with a logged-in user.
function testCacheToken() {
$GLOBALS['user']->uid = 1;
form_set_cache($this->form_build_id, $this->form, $this->form_state);
$cached_form_state = form_state_defaults();
$cached_form = form_get_cache($this->form_build_id, $cached_form_state);
$this
->assertEqual($this->form['#property'], $cached_form['#property']);
$this
->assertTrue(!empty($cached_form['#cache_token']), 'Form has a cache token');
$this
->assertEqual($this->form_state['example'], $cached_form_state['example']);
// Test that the form cache isn't loaded when the session/token has changed.
// Change the private key. (We cannot change the session ID because this
// will break the parent site test runner batch.)
\Drupal::state()
->set('system.private_key', 'invalid');
$cached_form_state = form_state_defaults();
$cached_form = form_get_cache($this->form_build_id, $cached_form_state);
$this
->assertFalse($cached_form, 'No form returned from cache');
$this
->assertTrue(empty($cached_form_state['example']));
// Test that loading the cache with a different form_id fails.
$wrong_form_build_id = $this
->randomName(9);
$cached_form_state = form_state_defaults();
$this
->assertFalse(form_get_cache($wrong_form_build_id, $cached_form_state), 'No form returned from cache');
$this
->assertTrue(empty($cached_form_state['example']), 'Cached form state was not loaded');
}