nodejs test server

testWithHttp.js

const http = require('http');

const incomingRequests = [];

const requestListener = function (req, res) {
    let data = '';
    req.on('data', chunk => {
        data += chunk;
    });
    req.on('end', () => {
        incomingRequests.push(data);
        res.writeHead(200);
        res.end('ok');
    });
}

const server = http.createServer(requestListener);
const port = parseInt(process.env.TEST_PORT || "8080");

describe("Test Something", async () => {
    before("start server", async () => {
        const p = new Promise((resolve, reject) => {
            try {
                server.listen(port, (err) => {
                    if (err) {
                        reject(err);
                    } else {
                        console.log(`test server is listening on port ${port}`);
                        resolve();
                    }
                });
            } catch (e) {
                reject(e);
            }
        });
        await p;
    });

    after("stop server", async () => {
        const p = new Promise(((resolve, reject) => {
            try {
                server.close((err => {
                    if (err) {
                        reject(err);
                    } else {
                        resolve();
                    }
                }));
            } catch (e) {
                reject(e);
            }
        }));
        await p;
    });

    it("test foo", async () => {
      // server is listening on `http://127.0.0.1:${port}`
      // incoming requests are waiting in incomingRequests
      // last request is available in incomingRequests[incomingRequests.length - 1]
    });

});