By Thomas Dodd

This solution was acheived using Node and Express. Unit tests are written using Mocha and Chai.

Clone the project: git clone https://github.com/tdodd/shopify-backend-challenge.git

• cd into the project directory
• Install dependencies with npm install.

Once this is complete, you can start the application via npm start and run tests via npm test.

The application architecture is as follows:

• The client sends a request to /customers/{pageNumber}
• The router receives this request and uses 2 controllers to perform jobs
  • CustomerController get the list of customers from the API
  • ValidationController performs the validation on the customers that were retreived
• The router then sends the invalid clients as a JSON object to the client

Sample response:

{
  "invalid_customers": [
    { "id": 1, "invalid_fields": ["name", "age"] },
    { "id": 3, "invalid_fields": ["password"] }
  ]
}