5a5fd01ebe
It occasionally crashes on CI, the reason seems out of our control, or at least we can't figure it out.
139 lines
3.9 KiB
Python
139 lines
3.9 KiB
Python
import sys
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import pytest
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def test_enabled(testdir):
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"""Test single crashing test displays a traceback."""
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testdir.makepyfile(
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"""
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import faulthandler
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def test_crash():
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faulthandler._sigabrt()
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"""
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)
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result = testdir.runpytest_subprocess()
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result.stderr.fnmatch_lines(["*Fatal Python error*"])
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assert result.ret != 0
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def test_crash_near_exit(testdir):
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"""Test that fault handler displays crashes that happen even after
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pytest is exiting (for example, when the interpreter is shutting down).
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"""
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testdir.makepyfile(
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"""
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import faulthandler
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import atexit
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def test_ok():
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atexit.register(faulthandler._sigabrt)
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"""
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)
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result = testdir.runpytest_subprocess()
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result.stderr.fnmatch_lines(["*Fatal Python error*"])
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assert result.ret != 0
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def test_disabled(testdir):
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"""Test option to disable fault handler in the command line.
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"""
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testdir.makepyfile(
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"""
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import faulthandler
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def test_disabled():
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assert not faulthandler.is_enabled()
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"""
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)
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result = testdir.runpytest_subprocess("-p", "no:faulthandler")
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result.stdout.fnmatch_lines(["*1 passed*"])
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assert result.ret == 0
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@pytest.mark.parametrize(
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"enabled",
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[
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pytest.param(
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True, marks=pytest.mark.skip(reason="sometimes crashes on CI (#7022)")
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),
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False,
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],
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)
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def test_timeout(testdir, enabled: bool) -> None:
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"""Test option to dump tracebacks after a certain timeout.
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If faulthandler is disabled, no traceback will be dumped.
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"""
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testdir.makepyfile(
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"""
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import os, time
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def test_timeout():
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time.sleep(1 if "CI" in os.environ else 0.1)
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"""
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)
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testdir.makeini(
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"""
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[pytest]
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faulthandler_timeout = 0.01
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"""
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)
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args = ["-p", "no:faulthandler"] if not enabled else []
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result = testdir.runpytest_subprocess(*args)
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tb_output = "most recent call first"
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if enabled:
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result.stderr.fnmatch_lines(["*%s*" % tb_output])
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else:
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assert tb_output not in result.stderr.str()
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result.stdout.fnmatch_lines(["*1 passed*"])
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assert result.ret == 0
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@pytest.mark.parametrize("hook_name", ["pytest_enter_pdb", "pytest_exception_interact"])
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def test_cancel_timeout_on_hook(monkeypatch, hook_name):
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"""Make sure that we are cancelling any scheduled traceback dumping due
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to timeout before entering pdb (pytest-dev/pytest-faulthandler#12) or any other interactive
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exception (pytest-dev/pytest-faulthandler#14).
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"""
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import faulthandler
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from _pytest.faulthandler import FaultHandlerHooks
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called = []
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monkeypatch.setattr(
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faulthandler, "cancel_dump_traceback_later", lambda: called.append(1)
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)
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# call our hook explicitly, we can trust that pytest will call the hook
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# for us at the appropriate moment
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hook_func = getattr(FaultHandlerHooks, hook_name)
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hook_func(self=None)
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assert called == [1]
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@pytest.mark.parametrize("faulthandler_timeout", [0, 2])
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def test_already_initialized(faulthandler_timeout, testdir):
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"""Test for faulthandler being initialized earlier than pytest (#6575)"""
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testdir.makepyfile(
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"""
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def test():
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import faulthandler
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assert faulthandler.is_enabled()
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"""
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)
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result = testdir.run(
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sys.executable,
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"-X",
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"faulthandler",
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"-mpytest",
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testdir.tmpdir,
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"-o",
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"faulthandler_timeout={}".format(faulthandler_timeout),
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)
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# ensure warning is emitted if faulthandler_timeout is configured
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warning_line = "*faulthandler.py*faulthandler module enabled before*"
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if faulthandler_timeout > 0:
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result.stdout.fnmatch_lines(warning_line)
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else:
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result.stdout.no_fnmatch_line(warning_line)
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result.stdout.fnmatch_lines("*1 passed*")
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assert result.ret == 0
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