> Increase test coverage writing test scripts for the rest of the python files missing.

> Increase test coverage writing test scripts for the rest of the python files missing.
> I will be adding tests scripts for
> 
> > * [x]  `pypinfo/cli.py`
> > * [x]  `pypinfo/db.py`
> > * [ ]  `pypinfo/fields.py`

_Originally posted by @gwappo82 in https://github.com/ofek/pypinfo/issues/77#issuecomment-628694084_