Ensure that all the HTTP calls you're expecting an SDK to make are being made. Test POST bodies, error handling and any other part of the request/response that you like

Ensure that the environment is reset after every test

Use isDone and pendingMocks to ensure that your app made all the HTTP requests it is expected to

Learn how to test your GitHub Actions and Workflows on your local machine with nektos/act; which uses Docker and Go to emulate the Actions runner