update tests/test_volume.py to report volumes
update tests/test_volume.py to report volumes

olivierverdier/sfepy,olivierverdier/sfepy,sfepy/sfepy,lokik/sfepy,olivierverdier/sfepy,BubuLK/sfepy,BubuLK/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,RexFuzzle/sfepy,lokik/sfepy,vlukes/sfepy,rc/sfepy,RexFuzzle/sfepy,BubuLK/sfepy,sfepy/sfepy,lokik/sfepy,rc/sfepy,rc/sfepy,vlukes/sfepy,lokik/sfepy,vlukes/sfepy,sfepy/sfepy