Modern testing strategy — why the pyramid is a lie, how testcontainers makes integration tests fast, how to keep E2E suites honest, and how to measure quality beyond coverage badges.
3 articles · updated regularly
A test that passes on retry is not fixed — it's lying. The five real causes of flakiness, how to diagnose each one, and why auto-retry is a last resort, not a strategy.
Spinning up real Postgres + Kafka + Redis for every test sounds expensive. It isn't, if you do reuse and singletons right.
The 'lots of unit tests, fewer integration, fewer E2E' diagram is from a different era. Here's what a 2026 test layering actually looks like.