parser.add_argument('-R', '--skip-tests', required=False, action='store',
nargs='+', dest="skips", default=None,
help='Skip the tests specified. Format should be <module>[.<class>[.<test_method>]]')
+
+ def check_parallel_support(parameter):
+ if not parameter.isdigit():
+ import argparse
+ raise argparse.ArgumentTypeError("argument -j/--num-processes: invalid int value: '%s' " % str(parameter))
+
+ processes = int(parameter)
+ if processes:
+ try:
+ import testtools, subunit
+ except ImportError:
+ print("Failed to import testtools or subunit, the testcases will run serially")
+ processes = None
+ return processes
+
parser.add_argument('-j', '--num-processes', dest='processes', action='store',
- type=int, help="number of processes to execute in parallel with")
+ type=check_parallel_support, help="number of processes to execute in parallel with")
parser.add_argument('-t', '--select-tag', dest="select_tags",
action='append', default=None,