Add tests to the codebase

[thebigbone]

I think we should start adding tests and possibly add it to the CI as well? I can start with the cli and aim for a good coverage score

[petar-cvit]

Completely agree. I have set up the CI for the controller, but since there were no tests on the cyctl, I didn't add the tests there. If you would like to add tests to cyctl, you can change this GH action to run them on each push.

[petar-cvit]

Hey @thebigbone, do you have any updates on this?

[thebigbone]

Hey @thebigbone, do you have any updates on this?

Hey I have not made much progress because of less spare time. I am planning to atleast cover the half of cli in the next week!

[petar-cvit]

Cool, thanks

[thebigbone]

@petar-cvit should we use minikube in the github actions for commands like init and serve? Or should I just write simple tests which do not require testing on a cluster?

[petar-cvit]

@thebigbone I think it's good enough to test it with unit tests without setting up the cluster, at least for start. We can add tests that require a cluster later on

[petar-cvit]

Hey @thebigbone, do you have any update on cyctl unit tests? I'm looking to update our CI for cyctl and add a test step

[thebigbone]

Hey, I should have asked this before but I am stuck at what tests would be sufficient. Should I just compare the output buffer only or should I create fake clientsets for kubernetes commands? Apologies for the delay.

[petar-cvit]

@thebigbone you can create a mock for clientset? You can create and use an interface in the code and then pass a mock in tests

[thebigbone]

@thebigbone you can create a mock for clientset? You can create and use an interface in the code and then pass a mock in tests

Mock of the k8s client right? And what about the module commands?

[petar-cvit]

@thebigbone you can take an interface here instead of passing CyclopsV1Alpha1Client struct directly. Then, you can pass a mock struct in your tests and an actual struct in code when creating Modules and other resources.

Same goes for other actions also. We are using ginkgo and gomega for testing in cyclops-ctrl, so you can use those as well and check how to use mocks with those