public function testTransactionRollback()
 {
     $check = array();
     $phid = new PhabricatorPHID();
     $phid->openTransaction();
     for ($ii = 0; $ii < 3; $ii++) {
         $test_phid = $this->generateTestPHID();
         $obj = new PhabricatorPHID();
         $obj->setPHID($test_phid);
         $obj->setPHIDType('TEST');
         $obj->setOwnerPHID('PHID-UNIT-!!!!');
         $obj->save();
         $check[] = $test_phid;
     }
     $phid->killTransaction();
     foreach ($check as $test_phid) {
         $this->assertNoSuchPHID($test_phid);
     }
 }