How to Tame Your Flaky Tests in TeamCity | The TeamCity Blog

Flaky tests, which intermittently fail due to factors like timing issues, dependencies, or resource contention, can undermine developer confidence and CI/CD pipeline reliability. This article highlights how TeamCity addresses these challenges by automatically detecting and marking flaky tests, thus reducing false positives and enhancing clarity on test failures through features like built-in history, investigations, and mutes. Unlike traditional systems like Jenkins that rely heavily on plugins and custom scripts to manage flaky tests, TeamCity offers built-in test intelligence that provides direct visibility into test history and allows for smart retry configurations, which target only specific test cases instead of entire builds. This approach helps separate genuine defects from transient glitches, and the mute-and-monitor pattern keeps pipelines stable by silencing failures in the main build while tracking them in the background. TeamCity's tools for managing flaky tests aim to improve productivity and trust in the CI/CD process, making it feasible for teams to maintain a green pipeline without losing sight of problematic tests.