[Tests] addServerMiddleware with string path

test/fixtures/module/modules/middleware/index.js

@@ -8,6 +8,8 @@ module.exports = function middlewareModule (options) {
         res.end('It works!')
       }
     })
+    // Add local middleware js
+    this.addServerMiddleware('~/modules/middleware/log.js')
     // Add plain middleware
     this.addServerMiddleware((req, res, next) => {
       next()

test/fixtures/module/modules/middleware/log.js

@@ -0,0 +1,5 @@
+module.exports = function (req, res, next) {
+  // eslint-disable-next-line no-console
+  console.log(req.url)
+  next()
+}