ReferenceError: TextEncoder在Github Actions Jest Script中没有定义.

Question

我有一个错误，只发生在我的Github Actions工作流(当我在本地运行我的Jest脚本时，它很好)。我只找到了这个SO答案和这个，但错误仍然存在。对下一步检查什么有什么想法吗?

错误如下:

> jest server/test/test --config=server/test/jest.config.js
FAIL server/test/test.js
● Test suite failed to run
ReferenceError: TextEncoder is not defined
at Object.<anonymous> (../../node_modules/mongodb-connection-string-url/node_modules/whatwg-url/dist/encoding.js:2:21)
at Object.<anonymous> (../../node_modules/mongodb-connection-string-url/node_modules/whatwg-url/dist/url-state-machine.js:5:34)

下面是我的Jest配置和脚本:

jest.config.js

module.exports = {
preset: '@shelf/jest-mongodb'
};

. js

const dotenv = require('dotenv');
const path = require('path');
process.env = dotenv.config({path: path.resolve(__dirname, '.env')}).parsed;
const request = require('supertest');
const {app, server} = require('../server');
const { MongoClient } = require('mongodb');
const { TextEncoder } = require('util');
global.TextEncoder = TextEncoder;
describe('GET /', () => {
let mongoClient;
beforeAll(async () => {
app.locals.mongoClient = mongoClient = await MongoClient.connect(process.env.MONGODB_URI, { useNewUrlParser: true, useUnifiedTopology: true });;
});
afterAll(async () => {
await mongoClient.close();
server.close();
});
it('responds with path of /', (done) => {
request(app).get('/').expect(JSON.stringify({path: '/'}), done);
});
});

我的Github Actions工作流在npm run test-server步骤出错:

name: cicd
on:
push:
branches: [ master ]
pull_request:
branches: [ master ]
jobs:
build:
runs-on: ubuntu-latest
strategy:
matrix:
node-version: [ 10.x, 12.x, 14.x, 15.x ]
fail-fast: false
steps:
- uses: actions/checkout@v2
- name: Create environment variables
run: |
touch server/test/.env
echo MONGODB_URI=${{ secrets.QA_MONGODB_URI }} >> server/test/.env
- name: Node.js ${{ matrix.node-version }}
uses: actions/setup-node@v2
with:
node-version: ${{ matrix.node-version }}
- run: npm ci
- run: npm run build --if-present
- run: npm run test-server
deploy:
needs: build
runs-on: ubuntu-latest
steps:
- uses: actions/checkout@v2
- uses: akhileshns/heroku-deploy@v3.12.12
with:
heroku_api_key: ${{ secrets.HEROKU_API_KEY }}
heroku_app_name: "my-app-name"
heroku_email: "my-email"

Answer 1

我遇到了同样的问题，只是在顶部插入了两行

全球。texttencoder = require("util").TextEncoder;

全球。TextDecoder = require(" utils ").TextDecoder;

reference: ReferenceError: TextEncoder is not defined with mongodb nodes

global.TextEncoder = require("util").TextEncoder;
global.TextDecoder = require("util").TextDecoder;
import { MongoMemoryServer } from 'mongodb-memory-server';
import mongoose from 'mongoose';

let mongod: MongoMemoryServer;
beforeAll(async () => {
const mongod = await MongoMemoryServer.create();
const mongoUri =  mongod.getUri();
await mongoose.connect(mongoUri);
});
beforeEach(async () => {
const collections = await mongoose.connection.db.collections();
for (let collection of collections) {
await collection.deleteMany({});
}
});
afterAll(async () => {
await mongod.stop(true);
await mongoose.connection.close();
});