Refactor optical throughput tests
Description
This MR mainly includes a refactoring of the optical throughput tests in order to fit the unit test
model and satisfy PEP8 syntax requirements.
It also include an update of the sqlalchemy version
as a project dependency and some minor refactoring/renaming.
Related Issue
Closes #68 (closed).
Checklist:
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My code follows the code style of this project. -
My change requires a change to the documentation. -
I have updated the documentation accordingly. -
I have read the CONTRIBUTING document. -
I have added tests to cover my changes. -
All new and existing tests passed.