feat: add command tests

[antouhou]

Issue being fixed or feature implemented

What was done?

How Has This Been Tested?

Breaking Changes

Checklist:

• [ ] I have performed a self-review of my own code
• [ ] I have commented my code, particularly in hard-to-understand areas
• [ ] I have added or updated relevant unit/integration/functional/e2e tests
• [ ] I have made corresponding changes to the documentation

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• [ ] I have assigned this pull request to a milestone

[antouhou]

Closing as per discussion with Daniel, he will proceed with the work on json output first, and that will be done after the monorepo stuff.