\section{Unit tests}
There are over 12 unit tests  for program functions, all of them can be ran by using python test environment:
\begin{lstlisting}
python -m pytest unit_tests

collected 12 items                                                                                                            

unit_tests/test_code/test_begin_document.py .                                                                           [  8%]
unit_tests/test_code/test_begin_tabular.py .                                                                            [ 16%]
unit_tests/test_code/test_document_class.py .                                                                           [ 25%]
unit_tests/test_code/test_length_conversions.py .                                                                       [ 33%]
unit_tests/test_code/test_only_pipes_and_space.py .                                                                     [ 41%]
unit_tests/test_code/test_split_columns.py .                                                                            [ 50%]
unit_tests/test_code/test_split_rows.py .                                                                               [ 58%]
unit_tests/test_code/test_tabular_columns_parameters.py .                                                               [ 66%]
unit_tests/test_code/test_tabular_parameters.py .                                                                       [ 75%]
unit_tests/test_code/test_tabular_required_parameters.py .                                                              [ 83%]
unit_tests/test_code/test_translate_column.py .                                                                         [ 91%]
unit_tests/test_code/test_translate_inside_to_html.py .                                                                 [100%]

===================================================== 12 passed in 0.02s ======================================================
\end{lstlisting}