Mar 3 · 7 min read · Testcontainers: Real Databases and Services in Your Integration Tests The biggest lie in software testing is the mock. You mock your database, your cache, your message queue, and your external APIs. Your tests pass. Then you deploy, and the real Pos...
Join discussionMar 3 · 7 min read · Database Testing and Local Development Tools Database testing is the most neglected part of most test suites. Teams write hundreds of unit tests with mocked data but never test their actual queries against a real database. When migrations fail in pro...
Join discussionFeb 12 · 9 min read · Why Traditional Integration Testing Fails Modern Systems The conventional approach of maintaining long-running test databases or using in-memory alternatives breaks down under current architectural demands. Shared test databases create state pollutio...
Join discussionApr 10, 2025 · 11 min read · I like to write stories to better explain problems I have or concepts I want to share. I still want the message to be clear, concise, and easy to digest, so I’ll give you a glossary to refer back to when reading the story if it it doesn’t click the f...
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Mar 25, 2025 · 13 min read · At some point in your development lifecycle, you will need to test that your system can integrate with another system, whether it be another API, a database, or caching service, for example. This can be a laborious task of spinning up other servers h...
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Mar 16, 2025 · 4 min read · Hi. This is the sixth part of the diary of developing the “Programmers’ diary” blog. The open source code of this project is on https://github.com/TheProgrammersDiary. The fifth part: https://medium.com/@vievaldas/implementing-ci-cd-and-splitting-mon...
Join discussionFeb 25, 2025 · 4 min read · Testing frameworks and utilities have progressed greatly over the past few years. TestContainers make creating isolated, lightweight dependencies to test an application's complete functionality easy and quick and reducing the need to mock large parts...
Join discussionJan 8, 2025 · 12 min read · For many developers, testing is something that is taken as something less relevant and is an area where in general, most people don't want to think about. For these people there are always many reasons to support this and hardly any of them is a good...
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Dec 4, 2024 · 5 min read · Thanks to Andrea Basile for the initial ideas for this research. Testcontainers is a very popular open-source library, ideal to quickly spin up a database, a message broker, or any other external dependency in a local machine, through code. Under the...
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Nov 16, 2024 · 3 min read · Recently, I wanted to rewrite a JUnit integration test for my Spring Boot application. Since it was an integration test, I used Testcontainers to start a database. While there are Kotest extensions for Spring and Testcontainers we have the problem th...
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