/**
  * testClearQueue
  */
 public function testClearQueue()
 {
     $backend = $this->_scheduler->getBackend();
     $backend->clearQueue();
     $tasks = $backend->loadQueue();
     $this->assertEquals(0, count($tasks));
     $this->_scheduler->removeAllTasks();
     $this->assertFalse($this->_scheduler->hasTask('Tinebase_Alarm'));
 }