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GH-120754: Add a strace helper and test set of syscalls for open().read() #121143

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Merged
hauntsaninja merged 23 commits into from
Aug 24, 2024
Merged

GH-120754: Add a strace helper and test set of syscalls for open().read() #121143

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a44faf3
Add strace helper for tracing system calls made by python running spe…
cmaloney Jun 28, 2024
a462039
Update test_subprocess to use strace_helper
cmaloney Jun 28, 2024
2ab832d
Add test to FileIO that validates set of syscalls
cmaloney Jun 29, 2024
ef298f2
Move from assert to .assertEqual
cmaloney Jun 29, 2024
283a077
Allow libc to use different fstat variants
cmaloney Jun 29, 2024
3b6c094
Exit early if strace exited non-zero
cmaloney Jun 29, 2024
97b294f
Add myself to ACKS
cmaloney Jun 29, 2024
e5bdc6b
Add tests around pathilb read_*() behavior
cmaloney Jun 29, 2024
397cd9e
Remove subprocess._USE_VFORK strace test
cmaloney Jun 29, 2024
e88d414
Merge remote-tracking branch 'origin/main' into cmaloney/systrace_hel…
cmaloney Jul 4, 2024
d99157f
Update call sequence after gh-120755
cmaloney Jul 4, 2024
5664558
Add specific python bug links
cmaloney Jul 9, 2024
736d5bc
Reduce annotations, stay bytes longer, make raw_events non-private
cmaloney Jul 9, 2024
47ed7fe
Move _strace_working checks to all be in requires_strace
cmaloney Jul 9, 2024
55d1cec
formatting fixes, reduce annotations further
cmaloney Jul 10, 2024
6fe0961
Small cleanups from self review
cmaloney Jul 10, 2024
943b07d
Merge branch 'main' into cmaloney/systrace_helper_wip
cmaloney Jul 10, 2024
2ea2bc8
Adjust test cases to match more general system call shape
cmaloney Jul 10, 2024
cdf449a
raw_events -> event_bytes
cmaloney Jul 10, 2024
c44bca6
Add bits I forgot to commit
cmaloney Jul 10, 2024
0210d16
Merge remote-tracking branch 'main' into cmaloney/systrace_helper_wip
cmaloney Aug 1, 2024
a1b4028
Merge branch 'main' into cmaloney/systrace_helper_wip
cmaloney Aug 18, 2024
0c6ebe6
Switch to functools.cache, simplifying the code
cmaloney Aug 18, 2024
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Merge remote-tracking branch 'main' into cmaloney/systrace_helper_wip
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@cmaloney
cmaloney committed Aug 1, 2024
commit 0210d1631dadcd994c0a82ebb6472bde5bef0016
19 changes: 0 additions & 19 deletions Lib/test/test_subprocess.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3414,25 +3414,6 @@ def __del__(self):
self.assertEqual(out.strip(), b"OK")
self.assertIn(b"preexec_fn not supported at interpreter shutdown", err)

@unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"),
"vfork() not enabled by configure.")
@mock.patch("subprocess._fork_exec")
@mock.patch("subprocess._USE_POSIX_SPAWN", new=False)
def test__use_vfork(self, mock_fork_exec):
self.assertTrue(subprocess._USE_VFORK) # The default value regardless.
mock_fork_exec.side_effect = RuntimeError("just testing args")
with self.assertRaises(RuntimeError):
subprocess.run([sys.executable, "-c", "pass"])
mock_fork_exec.assert_called_once()
# NOTE: These assertions are *ugly* as they require the last arg
# to remain the have_vfork boolean. We really need to refactor away
# from the giant "wall of args" internal C extension API.
self.assertTrue(mock_fork_exec.call_args.args[-1])
with mock.patch.object(subprocess, '_USE_VFORK', False):
with self.assertRaises(RuntimeError):
subprocess.run([sys.executable, "-c", "pass"])
self.assertFalse(mock_fork_exec.call_args_list[-1].args[-1])

@unittest.skipIf(not sysconfig.get_config_var("HAVE_VFORK"),
"vfork() not enabled by configure.")
@strace_helper.requires_strace()
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