No Docker client strategy found - docker

Question

I'm trying to implement E2E testing in NestJS application. I'm using Postgres in a docker container. It is running fine for other testing. The only problem is E2E testing. And I'm getting the following error:
No Docker client strategy found
at node_modules/testcontainers/dist/docker/docker-client.js:46:11
at fulfilled (node_modules/testcontainers/dist/docker/docker-client.js:5:58)
● Test suite failed to run
TypeError: Cannot read properties of undefined (reading 'close')
59 |
60 | afterAll(async () => {
> 61 | await app.close();
| ^
62 | await container.stop();
63 | });
64 |
at Object.<anonymous> (test/event.e2e-spec.ts:61:15)
My code is given below:
describe('EventAPI (e2e)', () => {
jest.setTimeout(180_000);
let app: INestApplication;
let service: Service;
let container: E2EPgContainer;
beforeAll(async () => {
container = new E2EPgContainer();
await container.init();
// eslint-disable-next-line #typescript-eslint/no-var-requires
const AppModule = require('../src/server/app/app.module').AppModule;
const module: TestingModule = await Test.createTestingModule({
imports: [AppModule],
}).compile();
app = module.createNestApplication();
app.useGlobalPipes(new ValidationPipe({ transform: true }));
service = module.get<Service>(Service);
await app.init();
});
afterEach(() => {
jest.clearAllMocks();
});
afterAll(async () => {
await app.close();
await container.stop();
});
describe('GET-POINT API', () => {
it('GET /:customerId --> should return success 200 after get points', async () => {
// test code
});
});
});
How can I solve this issue?

Answer 1

I'm assume that your docker container is running, but not as rootless. Make sure you are running your docker as rootless. You can try following:
$ sudo groupadd docker
$ sudo gpasswd -a $USER docker
Now make sure the following environment variables are set (or add them to ~/.bashrc)
export PATH=/home/ubuntu/bin:$PATH
export DOCKER_HOST=unix:///run/user/1001/docker.sock
Now try to restart docker
$ sudo service docker restart
After all steps try following docker command in terminal without sudo:
$ docker ps
If you are able to see your docker container, then it will solve your problem.