tests/test_nanshe/test_util/test_wrappers.py: Added a test for `class_static_variables`.
tests/test_nanshe/test_util/test_wrappers.py: Added a test for `class_static_variables`.

DudLab/nanshe,DudLab/nanshe,jakirkham/nanshe,nanshe-org/nanshe,jakirkham/nanshe,nanshe-org/nanshe