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gh-76183: Fix legacy locale coercion tests on platforms that already have a default C.UTF-8 locale by embray · Pull Request #4361 · python/cpython · GitHub

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gh-76183: Fix legacy locale coercion tests on platforms that already have a default C.UTF-8 locale #4361

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gh-76183: Fix legacy locale coercion tests on platforms that already have a default C.UTF-8 locale #4361

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23 changes: 23 additions & 0 deletions Lib/test/test_c_locale_coercion.py
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Original file line number Diff line number Diff line change
Expand Up @@ -160,11 +160,13 @@ def get_child_details(cls, env_vars):
AVAILABLE_TARGETS = None
CLI_COERCION_TARGET = None
CLI_COERCION_WARNING = None
DEFAULT_LC_CTYPE = None

def setUpModule():
global AVAILABLE_TARGETS
global CLI_COERCION_TARGET
global CLI_COERCION_WARNING
global DEFAULT_LC_CTYPE

if AVAILABLE_TARGETS is not None:
# initialization already done
Expand All @@ -181,6 +183,22 @@ def setUpModule():
CLI_COERCION_TARGET = AVAILABLE_TARGETS[0]
CLI_COERCION_WARNING = CLI_COERCION_WARNING_FMT.format(CLI_COERCION_TARGET)

# Determine the platform's default LC_CTYPE from the default locale.
# POSIX provides that there *exists* a default locale to provide when
# no environment variables are set, or are set to empty strings. However,
# it does not specify that this default *must* be the "POSIX" locale, or
# how the platform selects the default. In most cases it will be set to
# "C"/"POSIX" but this is not necessarily the case.
result, py_cmd = run_python_until_end(
"-c", "import locale; print(locale.setlocale(locale.LC_CTYPE))",
__isolated=True,
LANG="", LC_ALL="", LC_CTYPE="", PYTHONCOERCECLOCALE="0"
)
if not result.rc == 0:
result.fail(py_cmd)

DEFAULT_LC_CTYPE = result.out.decode("ascii").strip().upper()

xdegaye Nov 11, 2017

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

Did you try setting C_LOCALE_STREAM_ENCODING to "utf-8" instead ?

class _LocaleHandlingTestCase(unittest.TestCase):
# Base class to check expected locale handling behaviour
Expand Down Expand Up @@ -301,6 +319,11 @@ def _check_c_locale_coercion(self,
# See https://bugs.python.org/issue30672 for discussion
if locale_to_set == "POSIX":
continue
elif locale_to_set == "" and DEFAULT_LC_CTYPE == "C.UTF-8":

xdegaye Nov 11, 2017

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Choose a reason Spam Abuse Off Topic Outdated Duplicate Resolved Low Quality

The condition is too restrictive:

  • When locale_to_set is "" and a locale envt variable exists in extra_vars with a non empty string (for example in test_LC_ALL_set_to_C), the subtest may be run.
  • It seems that when C_LOCALE_STREAM_ENCODING is set to "utf-8" and coerce_c_localecoerce_c_locale is not "warn" then the test should pass.
# The default locale is already C.UTF-8 so the subsequent tests
# don't behave as expected (they assume the default LC_CTYPE will
# be "C")
continue
with self.subTest(env_var=env_var,
nominal_locale=locale_to_set,
PYTHONCOERCECLOCALE=coerce_c_locale):
Expand Down
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