[PRIMARY FEATURE] Testing API Endpoints

[ZombiMigz]

User Story

As a developer I want the REST API endpoints tested so I know they are returning the correct data.

Technical Task

• Research testing and implement testing
• Add testing command to npm

Acceptance Criteria

• Running npm run test tests the endpoints and properly identifies errors

[misslame]

@E-A-H62 and @peppacaiou please link the PR to the issue

[TonyTong112358]

This should have been close my bad.