How to reset emulator DB before each test?

I'm running tests with the gcloud datastore emulator for node.
I want to reset the db before each test.

Is there a quick way like a 'drop' command or something I can use in a beforeEach block ?

Solution

Just simply remove the db file. Usually, it is ~/.config/gcloud/emulators/datastore/WEB-INF/appengine-generated/local_db.bin.