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import os
from pathlib import Path
from unittest import mock
from django.core.exceptions import ImproperlyConfigured
from django.test import SimpleTestCase, override_settings
from django.urls.resolvers import LocaleRegexDescriptor, RegexPattern
from django.utils import translation
here = os.path.dirname(os.path.abspath(__file__))
@override_settings(LOCALE_PATHS=[os.path.join(here, "translations", "locale")])
class LocaleRegexDescriptorTests(SimpleTestCase):
def setUp(self):
translation.trans_real._translations = {}
def tearDown(self):
translation.trans_real._translations = {}
def test_translated_regex_compiled_per_language(self):
provider = RegexPattern(translation.gettext_lazy("^foo/$"))
with translation.override("de"):
de_compiled = provider.regex
# compiled only once per language
error = AssertionError(
"tried to compile url regex twice for the same language"
)
with mock.patch("django.urls.resolvers.re.compile", side_effect=error):
de_compiled_2 = provider.regex
with translation.override("fr"):
fr_compiled = provider.regex
self.assertEqual(fr_compiled.pattern, "^foo-fr/$")
self.assertEqual(de_compiled.pattern, "^foo-de/$")
self.assertEqual(de_compiled, de_compiled_2)
def test_nontranslated_regex_compiled_once(self):
provider = RegexPattern("^foo/$")
with translation.override("de"):
de_compiled = provider.regex
with translation.override("fr"):
# compiled only once, regardless of language
error = AssertionError("tried to compile non-translated url regex twice")
with mock.patch("django.urls.resolvers.re.compile", side_effect=error):
fr_compiled = provider.regex
self.assertEqual(de_compiled.pattern, "^foo/$")
self.assertEqual(fr_compiled.pattern, "^foo/$")
def test_regex_compile_error(self):
"""Regex errors are re-raised as ImproperlyConfigured."""
provider = RegexPattern("*")
msg = '"*" is not a valid regular expression: nothing to repeat'
with self.assertRaisesMessage(ImproperlyConfigured, msg):
provider.regex
def test_access_locale_regex_descriptor(self):
self.assertIsInstance(RegexPattern.regex, LocaleRegexDescriptor)
@override_settings(LOCALE_PATHS=[Path(here) / "translations" / "locale"])
class LocaleRegexDescriptorPathLibTests(LocaleRegexDescriptorTests):
pass
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