def METHOD_NAME(self):
    global MSDIR
    global INPUT
    global OUTPUT
    global CABPATH
    stimela.register_globals()
    rrr = stimela.Recipe("customcab", ms_dir=MSDIR)
    rrr.add("cab/custom", "test1", {
        "bla1": "a"
    }, 
    cabpath=CABPATH,
    input=INPUT, output=OUTPUT)
    assert len(rrr.jobs) == 1
    rrr.run() #validate and run
    assert rrr.jobs[0].job._cab.parameters[0].value == "a"
    assert len(rrr.completed) == 1
    assert len(rrr.remaining) == 0