If two weeks have passed, you ran tests, and they all turned red — what do you do?

If after 2 weeks I run tests and all of them fail (red), I need to act systematically:

1. Check the environment — ensure that the test environment is configured correctly, and there are no changes in configuration, dependencies, or data.

2. Review test logs — understand which tests are failing and with what errors.

3. Determine the scope of the problem — are all tests failing or only some? If all — the issue might be in the environment or global changes.

4. Check code changes — what has changed in these 2 weeks? There might be incompatibilities or bugs.

5. Update test data — if the data is outdated, it needs to be refreshed.

6. Run tests locally — try to reproduce the problem and debug.

7. Communicate with the team — report the issue, maybe someone has already encountered it.

8. Gradually fix — starting with the most critical and simple errors.

This approach will help quickly localize and eliminate the cause of the mass test failures.