TEST: test function should now return a tuple with status, output and results.
TEST: test function should now return a tuple with status, output and results.

Former-commit-id: 8438ffc16b52951a6a864aaefecd99c1a8a9dee5 [formerly 09634e5cf7a38000db3b8ccb61655d5f88885c2e]
Former-commit-id: 2cc681fe5462cb2f5aae091d79c05dba43090180
Former-commit-id: d38e1d2904ab19b9773b9f861317a9156bf8b333
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox