actions.test

<?php
/**
 * @file
 * Tests for checking the actions system within Backdrop.
 */

/**
 * Test actions executing in a potential loop, and make sure they abort properly.
 */
class ActionLoopTestCase extends BackdropWebTestCase {
  protected $profile = 'testing';

  function setUp() {
    parent::setUp('dblog', 'actions_loop_test');
  }

  /**
   * Set up a loop with 3 - 12 recursions, and see if it aborts properly.
   */
  function testActionLoop() {
    // Delete any existing watchdog messages to clear the plethora of
    // "Action added" messages from when Backdrop was installed.
    db_delete('watchdog')->execute();
    // To prevent this test from failing when xdebug is enabled, the maximum
    // recursion level should be kept low enough to prevent the xdebug
    // infinite recursion protection mechanism from aborting the request.
    // See http://drupal.org/node/587634.
    config_set('system.core', 'action_recursion_limit', 7);
    $this->triggerActions();
  }

  /**
   * Create an infinite loop by causing a watchdog message to be set,
   * which causes the actions to be triggered again, up to actions_max_stack
   * times.
   */
  protected function triggerActions() {
    $this->backdropGet('<front>', array('query' => array('trigger_actions_on_watchdog' => 'actions_loop_test_log')));
    $expected = array();
    $expected[] = 'Triggering action loop';
    $recursion_limit = config_get('system.core', 'action_recursion_limit');
    for ($i = 1; $i <= $recursion_limit; $i++) {
      $expected[] = "Test log #$i";
    }
    $expected[] = 'Stack overflow: recursion limit for actions_execute() has been reached. Stack is limited by %limit calls.';

    $result = db_query("SELECT message FROM {watchdog} WHERE type = 'actions_loop_test' OR type = 'actions' ORDER BY wid");
    foreach ($result as $row) {
      $expected_message = array_shift($expected);
      $this->assertEqual($row->message, $expected_message, t('Expected message %expected, got %message.', array('%expected' => $expected_message, '%message' => $row->message)));
    }
    $this->assertTrue(empty($expected), t('All expected messages found.'));
  }
}