Add comprehensive tests for role middleware and fix package dependencies

node_modules/assertion-error/README.md

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+# AssertionError [![Build Status](https://travis-ci.org/chaijs/assertion-error.png?branch=master)](https://travis-ci.org/chaijs/assertion-error)
+
+> Error constructor for test and validation frameworks that implements standardized AssertionError specification.
+
+## Installation
+
+### Node.js
+
+`assertion-error` is available on [npm](http://npmjs.org).
+
+    $ npm install assertion-error
+
+### Component
+
+`assertion-error` is available as a [component](https://github.com/component/component).
+
+    $ component install chaijs/assertion-error
+
+## License
+
+(The MIT License)
+
+Copyright (c) 2013 Jake Luer <jake@qualiancy.com> (http://qualiancy.com)
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in
+all copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
+THE SOFTWARE.