TEST: isct_test_function: minor changes
TEST: isct_test_function: minor changes

Former-commit-id: de935f18d6b82a5cd2a815a32ba5faf80c92a26c [formerly 7e3668546d4aa9b2edcef1474a7821668ba0cd2f]
Former-commit-id: 2b0542b97dc045112a344cf5543be796b6afc951
Former-commit-id: bba0dc54c0734bb0e950b6e3f14cd1f8dffe5535
neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox,neuropoly/spinalcordtoolbox