Add test

[Henri Devigne]

Is your feature request related to a problem? Please describe.
I'm always tired about the fact of release a instable build.

Describe the solution you'd like
I know, build test with pyunit is absurd because we want test command line command

Purpose unittest

Describe alternatives you've considered
A clear and concise description of any alternative solutions or features you've considered.

Additional context
Add any other context or screenshots about the feature request here.