Unit testing on Github Actions

[McDic]

I have finally made working workflows for unit testing on mixed language maturin project.

Workflow file: test.yml

You can just do maturin develop to install the module and run Python tests locally, but this command does not support running outside of virtual environment. So I built the wheel file with maturin build and did a installation of entire module via pip install directly.

And finally the cwd is moved(cd) into the testing directory and then ran python -m unittest. This is because if you run python on the repository root, this may conflict with repository Python code(which leads to error because of absence of built Rust modules) if you have same name of directory on the repository root.

The actual yml file is simple but I noticed there aren't many pages that covers any guides or questions regarding testing Python codes on CI, so I decided to share this.