`compat.safe_getattr` now catches OutcomeExceptions too

This commit is contained in:
Kirill Pinchuk 2017-08-21 17:28:29 +03:00
parent 539523cfee
commit 12b1bff6c5
3 changed files with 32 additions and 3 deletions

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@ -11,6 +11,7 @@ import functools
import py import py
import _pytest import _pytest
from _pytest.outcomes import TEST_OUTCOME
try: try:
@ -221,14 +222,16 @@ def getimfunc(func):
def safe_getattr(object, name, default): def safe_getattr(object, name, default):
""" Like getattr but return default upon any Exception. """ Like getattr but return default upon any Exception or any OutcomeException.
Attribute access can potentially fail for 'evil' Python objects. Attribute access can potentially fail for 'evil' Python objects.
See issue #214. See issue #214.
It catches OutcomeException because of #2490 (issue #580), new outcomes are derived from BaseException
instead of Exception (for more details check #2707)
""" """
try: try:
return getattr(object, name, default) return getattr(object, name, default)
except Exception: except TEST_OUTCOME:
return default return default

1
changelog/2707.bugfix Normal file
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@ -0,0 +1 @@
`compat.safe_getattr` now catches OutcomeExceptions too

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@ -2,7 +2,8 @@ from __future__ import absolute_import, division, print_function
import sys import sys
import pytest import pytest
from _pytest.compat import is_generator, get_real_func from _pytest.compat import is_generator, get_real_func, safe_getattr
from _pytest.outcomes import OutcomeException
def test_is_generator(): def test_is_generator():
@ -74,3 +75,27 @@ def test_is_generator_async_syntax(testdir):
""") """)
result = testdir.runpytest() result = testdir.runpytest()
result.stdout.fnmatch_lines(['*1 passed*']) result.stdout.fnmatch_lines(['*1 passed*'])
class ErrorsHelper(object):
@property
def raise_exception(self):
raise Exception('exception should be catched')
@property
def raise_fail(self):
pytest.fail('fail should be catched')
def test_helper_failures():
helper = ErrorsHelper()
with pytest.raises(Exception):
helper.raise_exception
with pytest.raises(OutcomeException):
helper.raise_fail
def test_safe_getattr():
helper = ErrorsHelper()
assert safe_getattr(helper, 'raise_exception', 'default') == 'default'
assert safe_getattr(helper, 'raise_fail', 'default') == 'default'