问题 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 ? 回答1: Just simply remove the db file. Usually, it is ~/.config/gcloud/emulators/datastore/WEB-INF/appengine-generated/local_db.bin . 回答2: You could also send a POST /reset request to the emulator, mentioned here. 来源: https://stackoverflow.com/questions/39027941/how-to-reset-emulator-db-before-each-test