Previously the test only checked for the presence of an output file. If the file was there from a previous run, the test would be reported as successful even if the python subprocess failed. This pr makes it so that the subprocess call is checked for correct termination.
Previously the test only checked for the presence of an output file. If the file was there from a previous run, the test would be reported as successful even if the python subprocess failed. This pr makes it so that the subprocess call is checked for correct termination.