I have the following server class :
import express, { Request, Response } from 'express';
export default class Server {
server: any;
exp: any;
constructor() {
this.exp = express();
this.exp.get('/', (_req: Request, res: Response) => {
res.json('works');
});
}
start(): void {
this.server = this.exp.listen(3000);
}
stop(): void {
this.server.close();
}
}
I'm using supertest for end-to-end testing. I wish to start my application beforeAll tests and stop it when the tests are done.
It's easy to do that using beforAll and afterAll where I can just once instanciate the Server class and call the start and close methods.
But as I have 10+ controllers to test, I want to avoid to start and stop the server during each test file.
I found on the documentation the setupFiles and setupFilesAfterEnv but I can't stop the server since the instance is not "shared" in the two files.
This is an example of 1 test file :
import supertest from 'supertest';
describe('Album Test', () => {
let app: App;
beforeAll(async (done) => {
app = new App();
await app.setUp(); // database connection (not mentionned in the preivous example)
done();
});
afterAll(async (done) => {
await app.close();
app.server.stop();
done();
});
const api = supertest('http://localhost:3000');
it('Hello API Request', async () => {
const result = await api.get('/v1/user');
expect(result.status).toEqual(200);
...
});
});
This works totally fine but I'm duplicating this beforeAll and afterAll methods in every test file. Is there a way to declare it only once ?
Thanks
I have the following server class :
import express, { Request, Response } from 'express';
export default class Server {
server: any;
exp: any;
constructor() {
this.exp = express();
this.exp.get('/', (_req: Request, res: Response) => {
res.json('works');
});
}
start(): void {
this.server = this.exp.listen(3000);
}
stop(): void {
this.server.close();
}
}
I'm using supertest for end-to-end testing. I wish to start my application beforeAll tests and stop it when the tests are done.
It's easy to do that using beforAll and afterAll where I can just once instanciate the Server class and call the start and close methods.
But as I have 10+ controllers to test, I want to avoid to start and stop the server during each test file.
I found on the documentation the setupFiles and setupFilesAfterEnv but I can't stop the server since the instance is not "shared" in the two files.
This is an example of 1 test file :
import supertest from 'supertest';
describe('Album Test', () => {
let app: App;
beforeAll(async (done) => {
app = new App();
await app.setUp(); // database connection (not mentionned in the preivous example)
done();
});
afterAll(async (done) => {
await app.close();
app.server.stop();
done();
});
const api = supertest('http://localhost:3000');
it('Hello API Request', async () => {
const result = await api.get('/v1/user');
expect(result.status).toEqual(200);
...
});
});
This works totally fine but I'm duplicating this beforeAll and afterAll methods in every test file. Is there a way to declare it only once ?
Thanks
Share Improve this question edited May 11, 2020 at 8:20 Lin Du 103k136 gold badges334 silver badges565 bronze badges asked May 7, 2020 at 14:10 TLdTLd 6522 gold badges9 silver badges25 bronze badges2 Answers
Reset to default 3Try this it works
const supertest = require('supertest')
const app = require('../../app')
describe('int::app', function(){
let request = null
let server = null
before(function(done){
server = app.listen(done)
request = supertest.agent(server)
})
after(function(done){
server.close(done)
})
it('should get /api/v1/laps/85299', function(){
return request.get('/api/v1/laps/85299')
.expect(200, { data: {} })
})
})
You could use setupFiles to set up test fixtures globally. You can assign variables that you want to use in multiple test files to Node.js global object.
E.g.
app.ts
:
import express, { Request, Response } from 'express';
export default class Server {
server: any;
exp: any;
constructor() {
this.exp = express();
this.exp.get('/', (_req: Request, res: Response) => {
res.json('works');
});
}
start(): void {
this.server = this.exp.listen(3000);
}
stop(): void {
this.server.close();
}
}
app.setup.js
:
const App = require('./app').default;
beforeAll(() => {
global.app = new App();
global.app.exp.set('test setup', 1);
console.log('app setup');
});
afterAll(() => {
console.log('app stop');
});
jest.config.js
:
module.exports = {
preset: 'ts-jest/presets/js-with-ts',
testEnvironment: 'node',
setupFilesAfterEnv: [
'./jest.setup.js',
'/Users/ldu020/workspace/github./mrdulin/react-apollo-graphql-starter-kit/stackoverflow/61659975/app.setup.js',
],
testMatch: ['**/?(*.)+(spec|test).[jt]s?(x)'],
verbose: true,
};
a.controller.test.js
:
describe('controller a', () => {
it('should pass', () => {
console.log('test setup:', global.app.exp.get('test setup'));
expect(1 + 1).toBe(2);
});
});
b.controller.test.js
:
describe('controller b', () => {
it('should pass', () => {
console.log('test setup:', global.app.exp.get('test setup'));
expect(1 + 1).toBe(2);
});
});
unit test results:
PASS stackoverflow/61659975/a.controller.test.js
controller a
✓ should pass (5ms)
console.log
app setup
at Object.<anonymous> (stackoverflow/61659975/app.setup.js:6:11)
console.log
app setup
at Object.<anonymous> (stackoverflow/61659975/app.setup.js:6:11)
console.log
test setup: 1
at Object.<anonymous> (stackoverflow/61659975/b.controller.test.js:3:13)
console.log
test setup: 1
at Object.<anonymous> (stackoverflow/61659975/a.controller.test.js:3:13)
console.log
app stop
at Object.<anonymous> (stackoverflow/61659975/app.setup.js:10:11)
console.log
app stop
at Object.<anonymous> (stackoverflow/61659975/app.setup.js:10:11)
PASS stackoverflow/61659975/b.controller.test.js
controller b
✓ should pass (3ms)
Test Suites: 2 passed, 2 total
Tests: 2 passed, 2 total
Snapshots: 0 total
Time: 6.749s, estimated 12s