The Hidden Cost of Flaky Tests in Test Automation

A test result on the CI pipeline fails. A developer runs the process again, and the test passes. No changes to the code had been made. This happens frequently enough that many teams have experienced it before. When this occurs, it is treated as a common occurrence, and after a while, it becomes routine. As a result, automatic builds get rerun on failure, and only if they fail again do they receive any follow-up attention. Ultimately, the CI pipeline cannot be relied upon as a safe environment; instead, it becomes ambient background noise. Flaky tests are not just a nuisance. When flaky tests become frequent occurrences in CI processes, they undermine the team’s confidence, create inefficiencies within the development team, and introduce hidden costs that typically go unaccounted for.