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Configure Karma's ChromeHeadless launcher so your unit tests run in CI without a display server, including container flags, verification steps, and fixes for sandbox crashes and headless-only failures.
Learn how to configure Karma to switch between headed Chrome for local debugging and ChromeHeadless for CI pipelines using dynamic environment variables.
Learn how to configure Karma's singleRun and autoWatch settings to optimize for both local developer productivity and stable CI/CD pipeline execution.
Karma's singleRun mode aims to execute a test suite once and exit, which is essential for deterministic CI pipelines. The integration boundary between the Karma runner and the ChromeHeadless launcher introduces a race condition: the runner may terminate before the browser process has fully initialized and reported results, especially on slower CI agents. Thi
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