Fix tests

Author: Xerkus

composer.json

@@ -27,6 +27,7 @@
         "zendframework/zend-view": "^2.6.7"
     },
     "require-dev": {
+        "http-interop/http-middleware": "^0.4.1",
         "phpunit/phpunit": "^6.0.7 || ^5.7.14",
         "zendframework/zend-coding-standard": "~1.0.0",
         "zendframework/zend-json": "^2.6.1 || ^3.0",
@@ -45,7 +46,8 @@
         "zendframework/zend-paginator": "^2.7 To provide pagination functionality via PaginatorPluginManager",
         "zendframework/zend-psr7bridge": "(^0.2) To consume PSR-7 middleware within the MVC workflow",
         "zendframework/zend-servicemanager-di": "zend-servicemanager-di provides utilities for integrating zend-di and zend-servicemanager in your zend-mvc application",
-        "zendframework/zend-stratigility": "zend-stratigility is required to use middleware pipes in the MiddlewareListener"
+        "zendframework/zend-stratigility": "zend-stratigility is required to use middleware pipes in the MiddlewareListener",
+        "http-interop/http-middleware": "^0.4.1 to be used together with zend-stratigility"
     },
     "autoload": {
         "psr-4": {