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   1  <?php
   2  
   3  use dokuwiki\Extension\Event;
   4  
   5  /**
   6   * This tests if event handlers can trigger the same event again.
   7   * This is used by plugins that modify cache handling and use metadata
   8   * for checking cache validity which triggers another cache use event.
   9   */
  10  class events_nested_test extends DokuWikiTest {
  11      function test_nested_events() {
  12          global $EVENT_HANDLER;
  13          $firstcount = 0;
  14          $secondcount = 0;
  15  
  16          $EVENT_HANDLER->register_hook('NESTED_EVENT', 'BEFORE', null,
  17              function() use (&$firstcount) {
  18                  $firstcount++;
  19                  if ($firstcount == 1) {
  20                      $param = array();
  21                      Event::createAndTrigger('NESTED_EVENT', $param);
  22                  }
  23              }
  24          );
  25  
  26          $EVENT_HANDLER->register_hook('NESTED_EVENT', 'BEFORE', null,
  27              function() use (&$secondcount) {
  28                  $secondcount++;
  29              }
  30          );
  31  
  32          $param = array();
  33          Event::createAndTrigger('NESTED_EVENT', $param);
  34  
  35          $this->assertEquals(2, $firstcount);
  36          $this->assertEquals(2, $secondcount);
  37      }
  38  }