Postmortem: TDD with TestContainers
summary
Demonstrates using TestContainers to run real services (PostgreSQL 13, Pulsar, ZooKeeper) in Docker for fast TDD-style integration tests, initializing and tearing down containers per suite or per test with lazy initialization and Ryuk cleanup. Explains autogenerated JDBC URLs/credentials, the requirement that Docker be running, and argues this catches errors like wrong topic names or SQL typos early, shifting effort from unit tests to reliable integration tests used in production pipelines.
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chapters (8)
- 0:00Introduction
- 1:47Unit vs integration testing
- 6:25TDD with TestContainers
- 10:39TestContainers benefits
- 15:01JUnit 5 setup
- 20:24Experience and cases
- 24:15Supported techs
- 27:06Q&A
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