public function testSetAfterWrite()
 {
     $tmp1 = new TempFile();
     $tmp2 = new TempFile();
     $log = new PhutilDeferredLog($tmp1, 'xyz');
     $log->write();
     $caught = null;
     try {
         $log->setFile($tmp2);
     } catch (Exception $ex) {
         $caught = $ex;
     }
     $this->assertTrue($caught instanceof Exception, pht('Set After Write'));
 }