envoy-embassy-article-ui-test-base.swift

import Foundation
import XCTest

import Embassy
import EnvoyAmbassador

class UITestBase: XCTestCase {
  let port = 8080
  var router: Router!
  var eventLoop: EventLoopType!
  var server: HTTPServer!
  var app: XCUIApplication!

  var eventLoopThreadCondition: NSCondition!
  var eventLoopThread: NSThread!

  override func setUp() {
    super.setUp()
    setupWebApp()
    setupApp()
  }

  // setup the Embassy web server for testing
  private func setupWebApp() {
    eventLoop = try! SelectorEventLoop(selector: try! KqueueSelector())
    router = DefaultRouter()
    server = HTTPServer(eventLoop: eventLoop, app: router.app, port: port)

    // Start HTTP server to listen on the port
    try! server.start()

    eventLoopThreadCondition = NSCondition()
    eventLoopThread = NSThread(target: self, selector: #selector(runEventLoop), object: nil)
    eventLoopThread.start()
  }

  // set up XCUIApplication
  private func setupApp() {
    app = XCUIApplication()
    app.launchEnvironment["RESET_LOGIN"] = "1"
    app.launchEnvironment["ENVOY_BASEURL"] = "http://localhost:\(port)"
  }

  override func tearDown() {
    super.tearDown()
    app.terminate()
    server.stopAndWait()
    eventLoopThreadCondition.lock()
    eventLoop.stop()
    while eventLoop.running {
      if !eventLoopThreadCondition.waitUntilDate(NSDate().dateByAddingTimeInterval(10)) {
        fatalError("Join eventLoopThread timeout")
      }
    }
  }

  @objc private func runEventLoop() {
    eventLoop.runForever()
    eventLoopThreadCondition.lock()
    eventLoopThreadCondition.signal()
    eventLoopThreadCondition.unlock()
  }
}