javascript - 在 bash 脚本中运行时 Node 进程崩溃

Question

我正在为我的客户端服务器系统编写测试。服务器是一个正在运行和监听的 Node 进程，直到被杀死。
当我运行服务器，然后运行测试时，一切正常，并且测试通过。

我尝试编写一个运行服务器的bash脚本，然后才运行测试文件。结果就是服务器莫名其妙地被杀死了。

bash 脚本:

#!/usr/bin/env bash

output=$(mktemp "${TMPDIR:-/tmp/}$(basename 0).XXX")
node Server/Server --port 3300 &> $output &
server_pid=$!
echo "Initializing the server with pid: $server_pid . Wait:\n"
until grep -i 'Server is listening on ip ' $output
do
  sleep 1
done

ps     # here the server is running
npm run test
a=$?
ps     # here the server is not running
kill -9 $server_pid
echo "Server killed"
exit $a

测试:

'use strict';
const cp    = require('child_process');
const ip    = require('my-local-ip');
const utils = require('../util/utils');

describe('Server and client connectivity:', () => {

    it('should transfer index.html file to client', () => {
        let basePath = __dirname.split('/');
        basePath.pop();
        basePath = basePath.join('/');

        const clientPath = basePath + '/Client';

        cp.execSync('node ' + clientPath + '/request', ['-t', ip(), '-p', 3300]);

        expect(utils.isFileExistsInDirectory(clientPath, 'index.html')).toBe(true);
    });

});

通过从测试中删除 execSync 命令，测试会失败，但服务器仍在后台运行。

怎么可能通过在脚本中运行服务器，execSync 杀死服务器，而当手动运行服务器然后测试时 - 一切正常？

编辑:
cat $output 的输出:

/Users/yinonc/Desktop/DDoSMitigation/server/Server.js:52
                    throw err;
                    ^

Error: ENOENT: no such file or directory, open './index.html'

Server.js 文件的相关部分:

const server = http.createServer((req, res) => {
    console.log(`${req.method} request for ${req.url}`);
    console.log(req.connection.remoteAddress);
    let fileName = req.url;
    if (utils.isFileExistsInDirectory(__dirname, fileName)) {
        if (_.includes(fileName, '.html')) {
            fs.readFile(`./${fileName}`, (err, data) => {
                if (err) {
                    throw err; // --------- this is line 52 ----------
                }
                res.writeHead(200, {'Content-Type': 'text/html'});
                res.end(data);
            });
        } else if (req.url.match(/.jpg$/)) {
            const imgPath = path.join(__dirname, 'images', fileName);
            const imgStream = fs.createReadStream(imgPath);

            res.writeHead(200, {'Content-Type': 'image/jpeg'});

            imgStream.pipe(res);
        } else if (req.url.match(/.png$/)) {
            const imgPath = path.join(__dirname, 'images', fileName);
            const imgStream = fs.createReadStream(imgPath);

            res.writeHead(200, {'Content-Type': 'image/png'});

            imgStream.pipe(res);
        }
    } else {
        fileName = cleaner.cleanFileName(fileName);
        fs.writeFileSync(fileName, 'File Not Found. Please check your request.\n', err => {
            if (err) {
                throw err;
            }
        });
        fs.readFile(`./${fileName}`, (err, data) => {
            if (err) {
                console.log("error 2");
                throw err;
            }
            res.writeHead(200, {'Content-Type': 'text/plain'});
            res.end(data);
        });
    }
});

Answer 1

您需要使用path.join修复相对路径。当您运行测试时，您的工作目录是运行测试的位置，这会导致相对路径中断。

const server = http.createServer((req, res) => {
    console.log(`${req.method} request for ${req.url}`);
    console.log(req.connection.remoteAddress);
    let fileName = req.url;
    if (utils.isFileExistsInDirectory(__dirname, fileName)) {
        if (_.includes(fileName, '.html')) {
            fs.readFile(path.join(__dirname, `./${fileName}`), (err, data) => {
                if (err) {
                    throw err;
                }
                res.writeHead(200, {'Content-Type': 'text/html'});
                res.end(data);
            });
        } else if (req.url.match(/.jpg$/)) {
            const imgPath = path.join(__dirname, 'images', fileName);
            const imgStream = fs.createReadStream(imgPath);

            res.writeHead(200, {'Content-Type': 'image/jpeg'});

            imgStream.pipe(res);
        } else if (req.url.match(/.png$/)) {
            const imgPath = path.join(__dirname, 'images', fileName);
            const imgStream = fs.createReadStream(imgPath);

            res.writeHead(200, {'Content-Type': 'image/png'});

            imgStream.pipe(res);
        }
    } else {
        fileName = cleaner.cleanFileName(fileName);
        fs.writeFileSync(fileName, 'File Not Found. Please check your request.\n', err => {
            if (err) {
                throw err;
            }
        });
        fs.readFile(path.join(__dirname, `./${fileName}`), (err, data) => {
            if (err) {
                console.log("error 2");
                throw err;
            }
            res.writeHead(200, {'Content-Type': 'text/plain'});
            res.end(data);
        });
    }
});