update tests/test_high_level.py - finish test_solving()
update tests/test_high_level.py - finish test_solving()

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