Currently, I am facing the challenge of seeding my database with all the necessary resources required to successfully test my API. These tests are spread across multiple files.
Is there a method that will allow me to fully seed the database before any test from any suite is executed?
I am hoping to accomplish this without relying on beforeAll and afterAll as described in the Jest documentation. My goal is to complete the entire seeding process before running each individual test file.
After some thought, I eventually found a solution to my problem using globalSetup.
I opted for using globalSetup over managing it in beforeAll / afterAll because I wanted it to run only once per npm run test. With multiple *.test.ts files, I didn't want to seed and delete resources before each individual test.
In my jest.config.ts file, I have set the following value for the globalSetup field:
globalSetup: "<rootDir>/src/__tests__/setup/setup.api.ts",
The contents of setup.api.ts:
import 'tsconfig-paths/register';
import { seedTestDB } from "./setup.db"
import { setupTestUser } from "./testHelpers"
import { mongoConnect, mongoDisconnect } from "../../server/services/mongo"
import User from "../../models/User"
const setup = async () => {
try {
await mongoConnect()
await setupTestUser()
await seedTestDB()
await grantTempAdminAccess(process.env.__TEST_USER_ID__ as string)
await mongoDisconnect()
} catch(err) {
console.log(err)
await mongoDisconnect()
}
}
export default setup
The process involves connecting to the database, setting up a test user that will be used for all requests to API endpoints, and seeding the database. It's worth mentioning that I remove any previously seeded resources before initiating the seeding process. This approach seemed more reliable to me. Finally, I disconnect from the database.
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