Kafka Integration Testing

Purpose

Write production-grade integration tests for Kafka producers and consumers using testcontainers. Covers setting up temporary test brokers, testing producer/consumer workflows, verifying message ordering guarantees, testing error scenarios, and validating delivery semantics without mocking external services.

When to Use This Skill

Use when testing Kafka producer/consumer workflows end-to-end with "test Kafka integration", "verify message ordering", "test Kafka roundtrip", or "validate exactly-once semantics".

Do NOT use for unit testing with mocked Kafka (use pytest-adapter-integration-testing), implementing producers/consumers (use respective kafka-*-implementation skills), or schema validation (use kafka-schema-management).

Quick Start

Create a producer/consumer round-trip test in 3 steps: