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t/runner.py: New --flaky-attempts argument to retry failing tests #1019

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t/runner.py: New --flaky-attempts argument to retry failing tests #1019

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9 changes: 8 additions & 1 deletion t/runner.py
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Original file line number Diff line number Diff line change
Expand Up @@ -332,6 +332,8 @@ def printerr(s):
parser.add_argument('-v', '--verbose', default=False, action='store_true')
parser.add_argument('-e', '--exit-on-fail', default=False, action='store_true')
parser.add_argument('files', nargs=argparse.REMAINDER)
parser.add_argument('--flaky-attempts', default=1, type=int, metavar='INT',
help='number of times a failing test case will be tried before it is declared a failure (default: %(default)s)')
args = parser.parse_args()


Expand All @@ -353,7 +355,12 @@ def printerr(s):

tests.append((name, input, output))

if not run_test(name, input, output, args.verbose):
for attempt in range(1, args.flaky_attempts + 1):
if attempt > 1:
print(f'WARNING: Retrying failed test {file} (attempt {attempt} out of {args.flaky_attempts})...')
if run_test(name, input, output, args.verbose):
break
else:
if args.exit_on_fail:
exit(-1)

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