Using firestore.Timestamp.now() in Angular unit test

Question

I am developing an Angular application, with angularfire2 5.0.0-rc.10. I really hope I don't mess up any terms in the following, but here we go.

I have converted Date's, to the new firestore Timestamp type. This gives me a problem when writing tests. I can only do the following:

import { firestore } from 'firebase/app';
it ('should create', () => {
   firestore.Timestamp.now();
});

If I initialize firebase in my TestBed module with:

AngularFireModule.initializeApp(environment.firebase),

Otherwise I get the error:

TypeError: Cannot read property 'Timestamp' of undefined

So my questions:

1. Is this intended behaviour?
2. Are you not supposed to be able to create a firstore Timestamp data type, outside of an firebase angular project?
3. Why is firestore undefined when imported without the initializeApp?

Thanks so much for your help.

Answer 1

I resolved it below

angular version is 11.1.2

import firebase from 'firebase/app';
import 'firebase/firestore';
import Timestamp = firebase.firestore.Timestamp;