Tag Interview

Introduction

In this blog post, I want to share my approach to testing functions involving randomness in Go. Recently, I was asked how I would test a specific function that calculates possible directions for an object to move. Initially, I didn’t come up with a good idea. Here, I’ll discuss how I’d solve this problem in a real-world application with a detailed explanation.

The Function in Question

The function calculates all possible directions that an object can move (up, down, left, right) without violating boundaries. It then randomly selects a valid direction and returns the new coordinates.