When switching to a new web framework, ensuring thorough testing involves: Create Comprehensive Test Cases: Develop test cases for all features, including edge cases, to cover every functionality. Automate Testing: Use tools like Selenium or Cypress to automate repetitive tests, increasing efficiency and reducing errors. Implement Continuous Integration (CI): Set up CI pipelines to automatically run tests with each code change, providing real-time feedback.

When switching to a new web framework, I would implement a comprehensive testing strategy. This includes ensuring a robust suite of unit, integration, and end-to-end tests are in place before the migration. I’d prioritize testing core functionalities and areas affected by the new framework. Parallel testing with both the old and new frameworks can help catch discrepancies. Continuous integration (CI) tools would automate test runs to detect issues early. Additionally, involving key team members in code reviews will ensure a smoother transition and identify potential testing gaps.