Integration testing for Microservices with Docker and TestContainers
summary
Node.js user service uses MongoDB and Redis and the test suite boots real Docker images so one test command both starts containers and runs JUnit-style integration tests. TestContainers uses a generic container API to pull images and inject connection strings, the demo runs self-contained MongoDB and Redis and four integration tests pass even after the cloud DB is disconnected. Downsides are longer run time and reliance on Docker Hub availability, but the setup removes flaky CI and local dependency issues.
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chapters (8)
- 0:00Introduction
- 3:25Testing pyramid evolution
- 7:47TestContainers concept
- 14:33Live demo setup
- 21:11Test results and benefits
- 22:34TestContainers modules
- 24:42Pros and cons
- 26:05Closing and contact
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