Card number validator in Go

Simple card number validator project to gain experience in Go using low-level modules and TDD. Requires Go 1.21 and above (slices import).

What does it do ?

• Sets up an http server that'll listen to incoming requests
• Will validate the input, or return an appropriate HTTP code depending on the error
• If the input schema is valid, we'll validate the card number using Luhn's algorithm.
• Return a JSON containing a response with the card number and a boolean representing the algorithm response.

Unit tests

This little module was developed fully using TDD so I could learn more about testing development in Go.

Run go test ./... to test all the module (utilities, algorithm, and server).