update test_refine_hanging.py for pytest
update test_refine_hanging.py for pytest

sfepy/sfepy,rc/sfepy,vlukes/sfepy,BubuLK/sfepy,BubuLK/sfepy,vlukes/sfepy,rc/sfepy,sfepy/sfepy,BubuLK/sfepy,vlukes/sfepy,rc/sfepy,sfepy/sfepy