Chapter 4,6: prettier updates and web framework samples

Chapter06/fastify-generated-app/test/helper.js

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+'use strict'
+
+// This file contains code that we reuse
+// between our tests.
+
+const Fastify = require('fastify')
+const fp = require('fastify-plugin')
+const App = require('../app')
+
+// Fill in this config with all the configurations
+// needed for testing the application
+function config () {
+  return {}
+}
+
+// automatically build and tear down our instance
+function build (t) {
+  const app = Fastify()
+
+  // fastify-plugin ensures that all decorators
+  // are exposed for testing purposes, this is
+  // different from the production setup
+  app.register(fp(App), config())
+
+  // tear down our app after we are done
+  t.tearDown(app.close.bind(app))
+
+  return app
+}
+
+module.exports = {
+  config,
+  build
+}