We do a lot of debugging at Oppia, whether because tests are failing on a PR or because of a tricky bug that was found during release testing. These guides will help you get started debugging and offer useful tips:
Start here if failing tests are stopping you from pushing or merging a PR:
- [[If your local presubmit checks fail|If-your-presubmit-check-fails]]
- [[If CI checks fail on your PR|If-CI-checks-fail-on-your-PR]]
Unless the bug you are trying to fix is trivial, we recommend creating a debugging doc to organize your work. This must be done if you plan to ask for help from the community:
- [[Debugging Docs|Debugging-Docs]]
Here are some debugging guides for particular kinds of issues you might encounter or types of tests:
- [[Finding which commit introduced a bug|How-to-find-the-commit-which-introduced-a-bug]]
- [[Debugging end-to-end tests|Debug-end-to-end-tests]]
- [[Debugging backend tests|Debug-backend-tests]]
- [[Debugging frontend tests|Debug-frontend-tests]]
- [[Debugging lighthouse Tests|Lighthouse-Tests]]
- [[Debugging custom ESLint check tests|Debug-custom-ESLint-check-tests]]
- [[Debugging custom Pylint check tests|Debug-custom-Pylint-check-tests]]
Finally, see these debugging stories to learn more about how debugging works in practice:
- [[Debugging Stories|Debugging-Stories]]