Create test.py for each of the regression cases

[rbren]

What problem or use case are you trying to solve? We have an automated test framework now. But we need to actually add tests!

CC @dorbanianas

[anasdorbani]

Thanks @rbren

[yufansong]

Little confused about test.py, can you elaborate more details?

[anasdorbani]

@yufansong you can check this example described by @rbren #151 or you can check the hello-world folder in the cases folder