Add tests

[geek-yang]

We add tests to zampy.datasets functions and functions in utils.

[geek-yang]

To review this PR, just check the tests. Note that since functions using xesmf relying on conda/mamba environment, therefore tests related to those functions are conditional (but they are tested under the mamba CD/CI action).

[geek-yang]

Note that CD/CI on windows fails due to an unexpected PermissionError. This post seems to provide a solution to fix it (thanks for suggesting it @SarahAlidoost). Still needs to test whether it works or not.

[SarahAlidoost]

@geek-yang nice work on adding tests 👍 The tests cover most of the codes, well done. 🚀 Thank you for setting up the sonarcloud, too. I left some comments, please let me know if something is unclear. Besides those comments, I am wondering if we can re-organize files e.g. now there is a utils.py file and there is a directory utils. This is confusing. Can utils.py be moved to utils folder?

[sonarcloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

100.0% Coverage
0.0% Duplication

[geek-yang]

@geek-yang nice work on adding tests 👍 The tests cover most of the codes, well done. 🚀 Thank you for setting up the sonarcloud, too. I left some comments, please let me know if something is unclear. Besides those comments, I am wondering if we can re-organize files e.g. now there is a utils.py file and there is a directory utils. This is confusing. Can utils.py be moved to utils folder?

Thanks a lot for your review @SarahAlidoost. The comments help a lot. I think I have addressed all of them, please take a look again.

Regarding the utils, I totally agree with you 😂. During the development I always open the wrong file or adding the wrong path due to this confusing name. Let's make an issue and change it in another PR.

[SarahAlidoost]

@geek-yang thank you for addressing the comments 👍