Refactor behave_interface tests
Refactor behave_interface tests

Signed-off-by: Michael Barton <1d6e1cf70ec6f9ab28d3ea4b27a49a77654d370e@michaelbarton.me.uk>

pbelmann/command-line-interface,pbelmann/command-line-interface,bioboxes/command-line-interface,michaelbarton/command-line-interface,bioboxes/command-line-interface,michaelbarton/command-line-interface