Unit tests expect only default ports, seem to ignore firebase.json file

[b0ot]

I was following the Unit testing security rules with the Firebase Emulator Suite

There is a section where Todd creates separate functions to initialize the TestApp and AdminApp

function getFirestor(auth) {
     return firebase.initializetestApp({projectId: MY_PROJECT_ID, auth: auth}).firestore
}

However, I would end up with the following error:

Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.

Eventually, I was able to determine that despite the emulator running, it wasn't connecting.
I changed from

const firebase = require('@firebase/testing')

to

const firebase = require('@firebase/rules-unit-testing');

After which I was able to modify the function to work:

const EMULATOR_PORT = 8086

function getFirestore(auth) {
  const db = firebase.initializeTestApp({projectId: MY_PROJECT_ID, auth: myAuth }).firestore();
  db.useEmulator("localhost", EMULATOR_PORT)
  return db
}

This worked for the test app, but when I tried the same for the admin app, it does not work

function getAdminFirestore() {
  const db = firebase.initializeAdminApp({projectId: MY_PROJECT_ID }).firestore();
  db.useEmulator("localhost", EMULATOR_PORT)
  return db
}

ERROR: TypeError: db.useEmulator is not a function

If I comment out the db.usEmulator line I get the

Error: Timeout of 2000ms exceeded. For async tests and hooks, ensure "done()" is called; if returning a Promise, ensure it resolves.

I had a firebase.json and .firebaserc in the folder above, I even tried to create another copy in the same folder as the test script, but it also didn't seem to work.

[davideast]

@b0ot The new setup looks for the exec script first (using the process.env variable it provides) and then falls back to firebase.json if they do not exist.