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Added capture_stderr decorator to test_validate_docstrings #22543

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Merged
merged 3 commits into from
Sep 4, 2018
Merged

Added capture_stderr decorator to test_validate_docstrings #22543

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43f7f7c
Added capture_stderr decorator
WillAyd Aug 30, 2018
49ea82d
Py27 compat
WillAyd Aug 30, 2018
bf3b929
Merge remote-tracking branch 'upstream/master' into capture-stdout
WillAyd Sep 3, 2018
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6 changes: 6 additions & 0 deletions pandas/tests/scripts/test_validate_docstrings.py
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Original file line number Diff line number Diff line change
Expand Up @@ -4,6 +4,8 @@
import numpy as np
import pytest

from pandas.util.testing import capture_stderr


class GoodDocStrings(object):
"""
Expand Down Expand Up @@ -553,21 +555,25 @@ def _import_path(self, klass=None, func=None):

return base_path

@capture_stderr
def test_good_class(self):
assert validate_one(self._import_path( # noqa: F821
klass='GoodDocStrings')) == 0

@capture_stderr
@pytest.mark.parametrize("func", [
'plot', 'sample', 'random_letters', 'sample_values', 'head', 'head1',
'contains', 'mode'])
def test_good_functions(self, func):
assert validate_one(self._import_path( # noqa: F821
klass='GoodDocStrings', func=func)) == 0

@capture_stderr
def test_bad_class(self):
assert validate_one(self._import_path( # noqa: F821
klass='BadGenericDocStrings')) > 0

@capture_stderr
@pytest.mark.parametrize("func", [
'func', 'astype', 'astype1', 'astype2', 'astype3', 'plot', 'method'])
def test_bad_generic_functions(self, func):
Expand Down
2 changes: 1 addition & 1 deletion pandas/util/testing.py
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Expand Up @@ -673,7 +673,7 @@ def capture_stderr(f):
AssertionError: assert 'foo\n' == 'bar\n'
"""

@wraps(f)
@compat.wraps(f)
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@WillAyd WillAyd Aug 30, 2018 •
edited
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Looks like wraps wasn't preserving the signature in Py27 which would cause this to choke when combined with a parametrized function. Simply switched to the function from compat for now - providing as reference in case anyone runs into a similar issue in the future

def wrapper(*args, **kwargs):
try:
sys.stderr = StringIO()
Expand Down