Setup Unit Tests

[junievi]

Unit test endpoints and backend functions for code stability, catching regression bugs

User Stories
As a developer, I want a comprehensive suite of unit tests for the methods in my API
So that as I can continue to develop I can be confident that my changes are not introducing bugs into other areas of the codebase

As a developer, I want to use a combination of mocha, sinon, chai and proxyquire to write my tests,
so that I can easily write and run an automated suite of tests that effectively checks the functionality of the code without needing to run in a production environment

Acceptance Criteria
Given that I have cloned the repo to my local machine
When I inspect the repo
I should see a directory /test/ populated with .spec.js files
and,
Given that I have already run npm install successfully
When I run npm run test
I should see a record of tests run covering the following cases for each endpoint

• Successful request
• Missing data
• Malformed data
• Server side failure