Integration Test Archives - ITFROMZERO

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A Guide to Testcontainers with TypeScript: Production-Grade Dockerized Integration Tests for PostgreSQL and Redis

By IT From Zero October 27, 2026

Integration tests touching databases and caches are notoriously prone to dirty state and port collisions. Testcontainers paired with TypeScript lets you automatically spin up, isolate, and tear down real PostgreSQL and Redis containers directly from your test code.

Python

Python Integration Testing: Ending the “Fake Mock, Real Bug” Nightmare with Testcontainers

By IT From Zero May 23, 2026

Forget mocking databases! Here is a detailed guide on using Testcontainers and Pytest to write realistic integration tests for Python apps, ensuring code works 100% in production.

Docker

Testcontainers Guide: Stop Using H2 Database for Integration Testing

By IT From Zero May 17, 2026

The era of using H2 Database for testing is over. Here is a detailed guide on using Testcontainers with Docker to automate Integration Tests and ensure production parity.