Continue to build upon the LimerIQ sample app from the second controller testing activity.
If you do not have the app from the second activity, you can get a copy to use for this activity:
git clone git@github.com:human-se/limeriq-f24.git testing-activity-app-3
cd testing-activity-app-3
git switch start-part-3
bundle install
, rails db:migrate:reset
, etc.)