BaseCalculator

[JunCEEE]

Updated the BaseCalculator:

• Modified theBaseCalculator.py based on the "plusminus" example
• Fixed all the tests
• Added pytest command in DEVEL.md and .github/workflows/ci.yml to test test_BaseData.py and integration by default.

The main changes are in BaseCalculator.py and its test basecalculatortest.py

[JunCEEE]

• Changed test scripts' names from xxxTest.py to test_xxx.py to enable Running pytest in a harmonized way.
• Enable running integration and unit tests separately.
  The current testing usage:
  https://github.com/PaNOSC-ViNYL/libpyvinyl/blob/22f57f206729dcab36a02b1cf4952a33d9cae278/README.md#testing

[JunCEEE]

This error message: ValueError: len(output_keys) = 1 is not equal to len(output_data_types) = 1
from the jupyter notebook is supposed to be ValueError: len(output_keys) = 1 is not equal to len(output_data_types) = 0.
It' fixed here:

libpyvinyl/libpyvinyl/BaseCalculator.py

Lines 133 to 138 in 2a226f5

	def __check_consistency(self):
	"""Check the consistency of the input parameters"""
	if len(self.output_keys) != len(self.output_data_types):
	raise ValueError(
	f"len(output_keys) = {len(self.output_keys)} is not equal to len(output_data_types) = {len(self.output_data_types)}"
	)

By the way, do we still need to care about that jupyter notebook? Can we just take the plusminus integration test as an example? @CFGrote