// Copyright 2018 the V8 project authors. All rights reserved.// Use of this source code is governed by a BSD-style license that can be// found in the LICENSE file.// Uses lastPromise defined in testharness.jsassertPromiseResult(lastPromise,_=>{if(failures.length>0){letmessage='Some tests FAILED:\n';for(constfailureoffailures){message+=` ${failure}\n`;}failWithMessage(message);}});