How to split jest e2e tests into multiple files without losing context?

user_12334270 0
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So I've written plenty of e2e tests for my backend and this is becoming overwhelming as all of test methods are in one file.

Reason I have all of them in one file is that when my app is created, TypeORM creates in-memory database instance on which I do all of the tests - I need same database to be running across tests as I am doing cross-entities tests.

This part of code is crucial. It initializes app (which also initializes db under the hood):

let app: INestApplication;

beforeAll(async () => {
  const moduleFixture = await Test.createTestingModule({
    imports: [AppModule],
  }).compile();

  app = moduleFixture.createNestApplication();
  await app.init();
});

Is there a way to somehow transfer beforeAll()'s context so that it could be accessed from tests located in other files?

Maybe somehow make app global?

e2e-testing nestjs jestjs testing
1 Answers

Ok so kind of a solution is to instead of creating in memory database, you can create a sqlite database and force TypeORM to create a file (which will be your database) by using:

export const e2eConfig: SqliteConnectionOptions = {
  type: 'sqlite',
  database: 'db.db',
  entities: entities,
  synchronize: true,
};

(sqlite is mostly compatible with mysql)

This will make your data persist between tests.

user_123342700
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