stop watching files after running tests

server/hot-reloader.js

@@ -50,6 +50,19 @@ export default class HotReloader {
     this.stats = await this.waitUntilValid()
   }
 
+  async stop () {
+    if (this.watcher) this.watcher.close()
+
+    if (this.webpackDevMiddleware) {
+      return new Promise((resolve, reject) => {
+        this.webpackDevMiddleware.close((err) => {
+          if (err) reject(err)
+          resolve()
+        })
+      })
+    }
+  }
+
   async prepareMiddlewares (compiler) {
     compiler.plugin('after-emit', (compilation, callback) => {
       const { assets } = compilation

server/index.js

@@ -43,6 +43,12 @@ export default class Server {
     }
   }
 
+  async close () {
+    if (this.hotReloader) {
+      await this.hotReloader.stop()
+    }
+  }
+
   defineRoutes () {
     this.router.get('/_next-prefetcher.js', async (req, res, params) => {
       const p = join(__dirname, '../client/next-prefetcher-bundle.js')

test/integration.test.js

@@ -1,4 +1,4 @@
-/* global expect, jasmine, describe, test, beforeAll */
+/* global expect, jasmine, describe, test, beforeAll, afterAll */
 
 'use strict'
 
@@ -18,6 +18,8 @@ jasmine.DEFAULT_TIMEOUT_INTERVAL = 20000
 describe('integration tests', () => {
   beforeAll(() => app.prepare())
 
+  afterAll(() => app.close())
+
   test('renders a stateless component', async () => {
     const html = await render('/stateless')
     expect(html.includes('<meta charset="utf-8" class="next-head"/>')).toBeTruthy()