The train from 1993 was ruining my tests! — a humorous example of debugging problems

In the article published on the Cloudflare blog, the author addresses issues related to testing the Yarn package manager concerning performance and reliability. Yarn, a popular package manager in the JavaScript ecosystem, can hide unexpected problems in tests, leading to false results. The discussion includes instances where tests were executed successfully, yet did not correlate with actual code issues. The article also highlights the risks associated with relying on unit tests in the open-source environment. Thus, the authors recommend caution and thorough analysis of test results to ensure they provide true value in the development process. Changing the approach to testing can contribute to improving application quality and increasing trust in package management results. Therefore, it is essential to reconsider testing techniques for better efficiency and fewer wasted resources in the future.