### What you would like to be added? We need to add unit test for the `tune` function in the `katib_client` module. ### Why is this needed? Parent issue: [Add unit tests to the Katib SDK #2184](https://github.com/kubeflow/katib/issues/2184) Unit tests already implemented: - [Add unit test for create_experiment in the katib_client module #2325](https://github.com/kubeflow/katib/pull/2325) Bugs due to missing unit tests: - [[SDK] Fix empty list for env variables and numpy version #2360](https://github.com/kubeflow/katib/pull/2360) ### Love this feature? Give it a 👍 We prioritize the features with most 👍