Development
For development and testing, a couple of useful modules can be installed. The modules are excluded from the configuration synchronization.
Drupal admin message
The Drupal admin message module can show a message on admin pages:
drush pm:install drupal_admin_message
See https://github.com/itk-dev/drupal_admin_message/blob/main/README.md#configuration for details on how to set up admin messages
Masquerade
The Masquerade module makes it easy to switch between users during testing (or bug hunting).
drush pm:install masquerade
TIP
If you’re masquerading as a user that doesn’t have access to the admin menu, go to
/unmasqueradeto unmasquerade.