问错误:协议JSON API在使用TestCafe服务器运行灯塔时出错

EN

我正在尝试编写代码来启动TestCafe服务器，登录到一个经过身份验证的页面，导航到我想要的页面，然后对该页面执行灯塔。

这是我的testcafeServer.js文件：

const createTestCafe = require('testcafe'); let testcafe = null; createTestCafe('localhost', 1337, 1338) .then((tc) => { testcafe = tc; const runner = testcafe.createRunner(); return runner.src(['test_lightHouse.js']).browsers(['chrome']).run(); }) .then((failedCount) => { console.log('Tests failed: ' + failedCount); testcafe.close(); });

这是我的test_lighthouse.js文件：

import { Selector } from 'testcafe'; var fs = require('fs'); const lighthouse = require('lighthouse'); fixture`LightHouse Test`.page( 'MY-SPECIFIC-URL' ); test(`Generate Light House Result `, async (t) => { //Specific code to navigate to a certain page const auditResult = await lighthouse( 'MY-CURRENT-URL-I-WANT-TO-TEST', { logLevel: 'info', output: 'html', port: 1337, //I am getting this port # from the TestCafe server I am standing up locally - might be wrong } ); // Write data in 'Output.txt' . fs.writeFile('mynewfile3.html', auditResult, function (err) { if (err) throw err; console.log('Saved!'); }); console.log(auditResult); });

在执行这段代码时，我得到以下错误：

✖ Generate Light House Result 1) Error: Protocol JSON API error (list), status: 404 Browser: Chrome 80.0.3987.163 / macOS 10.15.4 102 | return resolve({message: data}); 103 | } 104 | return reject(e); 105 | } 106 | } > 107 | reject(new Error(`Protocol JSON API error (${command}), status: ${response.statusCode}`)); 108 | }); 109 | }); 110 | 111 | // This error handler is critical to ensuring Lighthouse exits cleanly even when Chrome crashes. 112 | // See https://github.com/GoogleChrome/lighthouse/pull/8583.

哪里出了问题？为什么这种情况经常发生？灯塔就是不能和TestCafe一起工作吗？