[FEATURE] Add tests for Calulator`s #174
Description
🚀 Feature Proposal
The Calculator class can be used in isolation from the pipeline (Experiment), for example, MDEBySize, It would be cool to cover them with tests for at least the calc() function.
Motivation
Checking the correctness of the work, including as a result of changes to low-level classes such as Calculator or Comporator.
Potential Impacts
- Increasing the stability of the code
- Simple verification that the components are working correctly