How to run your Playwright end-to-end tests in SloMo
AI Summary
This video tutorial by Checkly shows how to run Playwright end-to-end tests in slow motion (SloMo) to visually follow what happens during test execution. The presenter demonstrates running Playwright tests in headful mode to see the browser UI instead of headless mode, which is faster but less observable. By adding the “slowMo” launch option in the Playwright configuration, users can introduce delays between actions to slow down the test flow and watch the automated browser interactions at a human-digestible speed. The video explains how to configure “slowMo” globally, per-project, or per-test basis, including conditional enabling via environment variables. This technique helps understand test behavior without starting a full debug session. The video also briefly mentions other Playwright debugging tools and invites questions and community engagement.