105. Integration Testing on AWS

In this episode, we discuss integration testing event-driven systems and explore AWS's new Integration Application Test Kit (IATK). We cover the challenges of testing events and common approaches like logging, end-to-end testing, and using temporary queues. We then introduce IATK, walk through how to use it for EventBridge testing, and share our experience trying out the X-Ray trace validation. We found IATK promising but still rough around the edges, though overall a useful addition to help test complex event flows. 💰 SPONSORS 💰 AWS Bites is brought to you by fourTheorem, an Advanced AWS Partner. If you are moving to AWS or need a partner to help you go faster, check us out at fourtheorem.com ! 🔖 Chapters: 00:00 Introduction to integration testing challenges 00:54 Overview of integration testing approaches 04:30 Common techniques for testing events 06:01 Difference between integration tests and end-to-end (E2E) tests 06:44 Existing tools like SLS Test Tools 08:14 Introducing AWS IATK 09:34 Using IATK for EventBridge testing 12:09 Walkthrough of creating IATK tests 15:12 Validating traces with IATK and X-Ray 19:01 Issues faced with trace validation 21:06 Generating mock events with IATK 23:02 Thoughts and pros and cons of IATK 27:37 Closing notes In this episode, we mentioned the following resources: - sls-test-tools on GitHub: https://github.com/aleios-cloud/sls-test-tools - Sarah Hamilton’s article on Integration testing and how to use sls-test-tool: https://medium.com/serverless-transformation/bridge-integrity-integration-testing-strategy-for-eventbridge-based-serverless-architectures-b73529397251 - Our previous episode on building a cross-account Event Bridge deployment: https://awsbites.com/39-how-do-you-build-a-cross-account-event-backbone-with-eventbridge/ - Our IATK tests for the cross-account Event Bridge project: https://github.com/fourTheorem/cross-account-eventbridge/blob/main/test/integration/test_events.py - IATK tutorial: https://awslabs.github.io/aws-iatk/tutorial/ - IATK examples: https://awslabs.github.io/aws-iatk/tutorial/examples/retrieve_cfn_info/ You can listen to AWS Bites wherever you get your podcasts: - Apple Podcasts: https://podcasts.apple.com/us/podcast/aws-bites/id1585489017 - Spotify: https://open.spotify.com/show/3Lh7PzqBFV6yt5WsTAmO5q - Google: https://podcasts.google.com/feed/aHR0cHM6Ly9hbmNob3IuZm0vcy82YTMzMTJhMC9wb2RjYXN0L3Jzcw== - Breaker: https://www.breaker.audio/aws-bites - RSS: ​​https://anchor.fm/s/6a3312a0/podcast/rss Do you have any AWS questions you would like us to address? Leave a comment here or connect with us on X, formerly Twitter: - https://twitter.com/eoins - https://twitter.com/loige #aws #testing #integration