Coverage and multiprocessing

When running the test for spam.label.moveLabes(), the test is running but the coverage report is not showing the evaluation of the worker. Adding --concurrency=multiprocessing && coverage combine to python setup.py install && coverage run --concurrency=multiprocessing setup.py test && coverage combine && coverage html solves the issue (the worker is excluded from the coverage), but the file spam.visual.visualClass.py is not excluded and tested (under normal operation the file is excluded in the coverage report). On previous functions with multiprocessing, the worker is excluded in the coverage report.