Angular e2e testing of Webapp using Google Firestore

I need to create e2e tests for an Angular webapp. This webapp is using Firestore. I want to know how I can create tests that will not effect Firestore. The only thing that comes to my mind is that I will need to create a separate DB for testing. If creating a separate Firestore is the only solution then please suggest the most efficient way to do so (like taking snapshot)? Otherwise if there is a better alternative please suggest? TIA.