update tests
update tests

pgmpy/pgmpy,abinashpanda/pgmpy,pgmpy/pgmpy,palashahuja/pgmpy,yashu-seth/pgmpy,kris-singh/pgmpy,liquidmetal/pgmpy,jhonatanoliveira/pgmpy,ankurankan/pgmpy,yashu-seth/pgmpy,pratyakshs/pgmpy,abinashpanda/pgmpy,anaviltripathi/pgmpy,pratyakshs/pgmpy,khalibartan/pgmpy,sandeepkrjha/pgmpy,sandeepkrjha/pgmpy,palashahuja/pgmpy,ankurankan/pgmpy,kris-singh/pgmpy,liquidmetal/pgmpy,jhonatanoliveira/pgmpy,khalibartan/pgmpy,anaviltripathi/pgmpy