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gh-137242: Change CI arguments: remove --randomize, add --fail-rerun #138303

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gh-137242: Change CI arguments: remove --randomize, add --fail-rerun #138303

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e96c92a
Change CI arguments: remove `--randomize`, add `--fail-rerun`
mhsmith Aug 31, 2025
f69095c
Remove outdated comment
mhsmith Aug 31, 2025
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6 changes: 1 addition & 5 deletions Android/android.py
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Original file line number Diff line number Diff line change
Expand Up @@ -737,12 +737,8 @@ def ci(context):
# Prove the package is self-contained by using it to run the tests.
shutil.unpack_archive(package_path, temp_dir)

# Arguments are similar to --fast-ci, but in single-process mode.
launcher_args = ["--managed", "maxVersion", "-v"]
test_args = [
"--single-process", "--fail-env-changed", "--rerun", "--slowest",
"--verbose3", "-u", "all,-cpu", "--timeout=600"
]
test_args = ["--fast-ci", "--single-process"]
run(
["./android.py", "test", *launcher_args, "--", *test_args],
cwd=temp_dir
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4 changes: 2 additions & 2 deletions Lib/test/libregrtest/cmdline.py
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Expand Up @@ -453,13 +453,13 @@ def _parse_args(args, **kwargs):
# Continuous Integration (CI): common options for fast/slow CI modes
if ns.slow_ci or ns.fast_ci:
# Similar to options:
# -j0 --randomize --fail-env-changed --rerun --slowest --verbose3
# -j0 --fail-env-changed --rerun --fail-rerun --slowest --verbose3
if ns.use_mp is None:
ns.use_mp = 0
ns.randomize = True
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I would prefer to keep randomization for --fast-ci and --slow-ci options.

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@vstinner vstinner Sep 3, 2025 •
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I would prefer adding an option to disable randomization, option which could be used with --fast-ci / --slow-ci.

ns.fail_env_changed = True
if ns.python is None:
ns.rerun = True
ns.fail_rerun = True
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You can already pass --fail-rerun. Making it the default would make all CIs way more strict, I dislike this idea. When I tried a few years ago, I discovered tons of flaky tests and it was a pain to fix all of them.

ns.print_slow = True
ns.verbose3 = True
else:
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2 changes: 1 addition & 1 deletion Lib/test/test_regrtest.py
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Expand Up @@ -432,7 +432,7 @@ def check_ci_mode(self, args, use_resources, rerun=True):
regrtest = self.create_regrtest(args)
self.assertEqual(regrtest.num_workers, -1)
self.assertEqual(regrtest.want_rerun, rerun)
self.assertTrue(regrtest.randomize)
self.assertEqual(regrtest.fail_rerun, rerun)
self.assertIsInstance(regrtest.random_seed, int)
self.assertTrue(regrtest.fail_env_changed)
self.assertTrue(regrtest.print_slowest)
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