Add test file.
Add test file.

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