jest calls afterEach (teardown) before test finish only in debug mode - mongodb

Question

I am using nodejs, nestjs, supertest, mongodb, mongoose.
My tests run is completed successfully, using command
npm run test:e2e from default nestjs package.json config.
When I execute my separate test in debug mode, from vscode debug view it fails with error of disposed mongodb connection. The test has mutliple async requests calls which I await it returns after request is called and starts executing jest teardown afterEach and afterAll which is kinda strange for me.
My launch.json
{
"type": "node",
"request": "launch",
"name": "Jest Current File e2e tests",
"program": "${workspaceFolder}/node_modules/.bin/jest",
"args": [
"${fileBasenameNoExtension}",
"--config",
"${workspaceFolder}/test/jest-e2e.json"
],
"console": "integratedTerminal",
"internalConsoleOptions": "neverOpen",
"disableOptimisticBPs": true,
"windows": {
"program": "${workspaceFolder}/node_modules/jest/bin/jest"
}
}
jest-e2e.json
{
"moduleFileExtensions": ["js", "json", "ts"],
"rootDir": ".",
"testEnvironment": "node",
"testRegex": ".e2e-spec.ts$",
"transform": {
"^.+\\.(t|j)s$": "ts-jest"
}
}
app.e2e-spec.ts
describe('app (e2e)', () => {
let app: INestApplication;
let connection: Connection;
let dbInitializer: DbInitializer;
beforeAll(async () => {
const moduleFixture: TestingModule = await createAndCompileTestingModule();
app = moduleFixture.createNestApplication();
await configApp(app);
await app.init();
});
afterAll(async () => {
await app.close();
});
beforeEach(async () => {
const configService = app.get(ConfigService);
const logger = new MyLogger(configService);
connection = app.get(CustomConnectionService).getConnection();
dbInitializer = new DbInitializer(connection, logger);
await dbInitializer.seedDb();
});
afterEach(async () => {
await connection.db.dropCollection(dbInitializer.articleCollectionName);
await connection.db.dropCollection(dbInitializer.userCollectionName);
});
it('/ (POST) creates article', async function () {
expect.assertions(9);
const userToLogin = {
username: 'leane1Gra',
password: 'cft0id32',
};
const httpServer = app.getHttpServer();
const responseLogin = await request(httpServer)
.post(`/${LoginEndPoint}`)
.set('Accept', 'application/json')
.send(userToLogin);
expect(responseLogin.statusCode).toBe(201);
const userLoginResponse = responseLogin.body as UserLoginResponse;
const resposeGetUser = await request(app.getHttpServer())
.get(`/${UsersEndpoint}/by-username`)
.query({ username: userToLogin.username });
expect(resposeGetUser.statusCode).toBe(200);
const userFindByUsernameResponse =
resposeGetUser.body as MappedUserResponse;
const articleToCreate = {
title: 'article a',
subtitle: 'subtitle a',
description: 'description a',
category: 'history',
ownerId: userFindByUsernameResponse.id,
};
const response = await request(httpServer)
.post(`/${ArticlesEndpoint}`)
.set('Authorization', `Bearer ${userLoginResponse.user_jwt}`)
.set('Accept', 'application/json')
.send(articleToCreate);
expect(response.statusCode).toBe(201);
expect(response.headers['content-type']).toMatch(/json/);
const { updatedUser, newArticle } = response.body as CreateArticleResponse;
expect(newArticle.id).toBeTruthy();
expect(newArticle.title).toBe(articleToCreate.title);
expect(updatedUser.id).toBeTruthy();
expect(updatedUser.articleIds).toContain(newArticle.id);
expect(updatedUser.numberOfArticles).toBe(
userFindByUsernameResponse.numberOfArticles + 1,
);
});
}
I am adding a video of test run in debug mode

Answer 1

Add the timeout after your it test. The max value for timeout is 32 bit signed integer.
You can debug your test during specified timeout without jest teardown called.
it('/ (POST) creates article', async function () {
//test body omitted
},147483647)