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gh-108834: regrtest reruns failed tests in subprocesses (#108839)

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When using --rerun option, regrtest now re-runs failed tests
in verbose mode in fresh worker processes to have more
deterministic behavior. So it can write its final report even
if a test killed a worker progress.

Add --fail-rerun option to regrtest: exit with non-zero exit code
if a test failed pass passed when re-run in verbose mode (in a
fresh process). That's now more useful since tests can pass
when re-run in a fresh worker progress, whereas they failed
when run after other tests when tests are run sequentially.

Rename --verbose2 option (-w) to --rerun. Keep --verbose2 as a
deprecated alias.

Changes:

* Fix and enhance statistics in regrtest summary. Add "(filtered)"
  when --match and/or --ignore options are used.
* Add RunTests class.
* Add TestResult.get_rerun_match_tests() method
* Rewrite code to serialize/deserialize worker arguments as JSON
  using a new WorkerJob class.
* Fix stats when a test is run with --forever --rerun.
* If failed test names cannot be parsed, log a warning and don't
  filter tests.
* test_regrtest.test_rerun_success() now uses a marker file, since
  the test is re-run in a separated process.
* Add tests on normalize_test_name() function.
* Add test_success() and test_skip() tests to test_regrtest.
This commit is contained in:
Victor Stinner 2023-09-03 23:37:15 +02:00 • committed by GitHub
parent c2ec174d24
commit 31c2945f14
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12 changed files with 819 additions and 478 deletions
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7
Lib/test/bisect_cmd.py
View file

@ -109,9 +109,10 @@ def parse_args():
def main():
args = parse_args()
if '-w' in args.test_args or '--verbose2' in args.test_args:
print("WARNING: -w/--verbose2 option should not be used to bisect!")
print()
for opt in ('-w', '--rerun', '--verbose2'):
if opt in args.test_args:
print(f"WARNING: {opt} option should not be used to bisect!")
print()
if args.input:
with open(args.input) as fp: