I&#x27;m not saying don&#x27;t unit test or that E22 tests don&#x27;t have disadvantages, but... end-to-end tests are not frontend tests, so they will still catch problems regardless of whether the frontend changes.<p>Unless you are changing something that doesn&#x27;t affect any features (in which case, why it is in the codebase?), an end-to-end test could possibly catch it.