/// <reference types="node" resolution-mode="require"/>
import express from "express";
import { Server } from "http";
/**
 * This performs functions common to all the minion framework tests, like muting error logging
 * (because we'll be deliberately causing errors in tests), finding free ports to listen on for
 * testing the API, and setting up an express app to test against.
 *
 * @param caption The caption to put in the "describe" block that goes around this test
 * @param fn A function in which to execute tests - this passes a number of arguments as no-arg functions
 *           that will return the latest value - these values change during test setup so they can't be
 *           passed directly during the test setup.
 */
export default function baseSpec(caption: string, fn: (expressApp: () => express.Express, expressServer: () => Server, listenPort: () => number, beforeEachProperty: () => void) => void): void;