refactor test_read.py

[vishalj0501]

Pull Request

Description

Refactor test_read.py - https://github.com/openclimatefix/pv-site-datamodel/blob/main/tests/test_read.py as the file is a it long. This PR makes it more readable, and easy to run a smaller amount of tests.

Fixes #132

Checklist:

• [x] My code follows OCF's coding style guidelines
• [x] I have performed a self-review of my own code
• [x] I have made corresponding changes to the documentation
• [ ] I have added tests that prove my fix is effective or that my feature works
• [x] I have checked my code and corrected any misspellings

[vishalj0501]

@peterdudfield I've made the changes Thank You

[peterdudfield]

You can see the lint errors here - https://github.com/openclimatefix/pv-site-datamodel/actions/runs/8981594926/job/24667425757

isort --check pvsite_datamodel tests should then solve it

[peterdudfield]

@all-contributors please add @vishalj0501 for test

[allcontributors[bot]]

@peterdudfield

I've put up a pull request to add @vishalj0501! :tada: