When building event-driven Serverless applications on AWS, EventBridge is a must-have. It's simple to use, scalable and inexpensive.

However, a challenge I always faced during my event-driven projects was testing. I could not find an easy way to validate that the events sent by my application were matching my requirements. The critical challenge was to list events sent through an event bus, which is not natively possible with EventBridge.

In this talk, I'll explain how I tried to bypass this inconvenience, and why I chose to develop a library to help with testing event-driven applications on AWS. I'll then explain the building process of this library, and the architectural choices I had to make. I'll then show how you could benefit from it to build safer, more stable event-driven applications!