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"""Base classes and helpers for testing paramiko."""
import functools
import locale
import os
from pytest import skip
# List of locales which have non-ascii characters in all categories.
# Omits most European languages which for instance may have only some months
# with names that include accented characters.
_non_ascii_locales = [
# East Asian locales
"ja_JP", "ko_KR", "zh_CN", "zh_TW",
# European locales with non-latin alphabets
"el_GR", "ru_RU", "uk_UA",
]
# Also include UTF-8 versions of these locales
_non_ascii_locales.extend([name + ".utf8" for name in _non_ascii_locales])
def requireNonAsciiLocale(category_name="LC_ALL"):
"""Run decorated test under a non-ascii locale or skip if not possible."""
if os.name != "posix":
return skip("Non-posix OSes don't really use C locales")
cat = getattr(locale, category_name)
return functools.partial(_decorate_with_locale, cat, _non_ascii_locales)
def _decorate_with_locale(category, try_locales, test_method):
"""Decorate test_method to run after switching to a different locale."""
def _test_under_locale(testself):
original = locale.setlocale(category)
while try_locales:
try:
locale.setlocale(category, try_locales[0])
except locale.Error:
# Mutating original list is ok, setlocale would keep failing
try_locales.pop(0)
else:
try:
return test_method(testself)
finally:
locale.setlocale(category, original)
skipTest = getattr(testself, "skipTest", None)
if skipTest is not None:
skipTest("No usable locales installed")
functools.update_wrapper(_test_under_locale, test_method)
return _test_under_locale
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