FastAPI & Next.js project: Flight Booking App With DevOps. Day 1 - 100 - Master Backend Testing! | Pytest + FastAPI | Flight Booking Engine | Day 62

We’ve built complex features like Payments, Flight Search, and Kafka Consumers—now let’s make sure they stay working. 🛡️ In Day 62, we implement a complete automated testing suite for our Flight Booking Engine. No more manual clicking in Swagger UI. We are setting up Pytest to verify our entire backend, from database CRUD operations to mocking external APIs like Amadeus and Pesapal. 💡 In this live build: Pytest Setup: Configuring conftest.py with database overrides and test sessions. Dependency Injection: How to override the database and authentication dependencies safely. Mocking External APIs: Using unittest.mock to simulate Amadeus and Pesapal responses (so we don't spend real money or hit rate limits!). Testing Async Consumers: Verifying that our Kafka background workers send emails and create notifications correctly. CRUD Verification: Ensuring our database models behave exactly as expected. By the end, you’ll have a green test suite and the confidence to refactor without breaking your app. 📘 Watch the full playlist: 👉 https://www.youtube.com/playlist?list=PLdtwawCR2QjmdfhM-7SzDOVGop373bbgW 📂 GitHub Repo (Public Mirror): 👉 https://github.com/KNehe/aero_bound_ventures-public.git 🔥 Subscribe for real production-grade engineering—writing code that lasts. Discord - https://discord.gg/ZnUYVXg6 #FastAPI #Pytest #TDD #BackendTesting #Python #Mocking #IntegrationTesting