$this->assertEquals( 0, $queue->getSize(), "Queue is empty ($desc)" );
$this->assertEquals( 0, $queue->getAcquiredCount(), "Queue is empty ($desc)" );
$this->assertEquals( 0, $queue->getSize(), "Queue is empty ($desc)" );
$this->assertEquals( 0, $queue->getAcquiredCount(), "Queue is empty ($desc)" );