Add tests
>>> [!note] Migrated issue <!-- Drupal.org comment --> <!-- Migrated from issue #3581077. --> Reported by: [avpaderno](https://www.drupal.org/user/55077) Related to !24 >>> <p>The module should have tests, for example tests to verify the default system account is created when the module is installed, or that an existing account is correctly changed when it is made a system account, or that other modules can add new system accounts.</p>
issue