So siehts ganz gut aus !

node_modules/mqtt/test/mqtt_store.js

@@ -0,0 +1,9 @@
+'use strict'
+
+var mqtt = require('../lib/connect')
+
+describe('store in lib/connect/index.js (webpack entry point)', function () {
+  it('should create store', function (done) {
+    done(null, new mqtt.Store())
+  })
+})