function beforeAllimport { beforeAll } from "https://deno.land/std@0.141.0/testing/bdd.ts"; beforeAll<T>(fn: (this: T) => void | Promise<void>): voidRun some shared setup before all of the tests in the suite. Run some shared setup before all of the tests in the suite. Type ParametersTParametersfn: (this: T) => void | Promise<void>Returnsvoid