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from django.core.exceptions import ImproperlyConfigured
from django.template import engines
from django.test import SimpleTestCase, override_settings
class TemplateStringsTests(SimpleTestCase):
@override_settings(TEMPLATES=[{
'BACKEND': 'raise.import.error',
}])
def test_backend_import_error(self):
"""
Failing to import a backend keeps raising the original import error.
Regression test for #24265.
"""
with self.assertRaises(ImportError):
engines.all()
with self.assertRaises(ImportError):
engines.all()
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
# Incorrect: APP_DIRS and loaders are mutually incompatible.
'APP_DIRS': True,
'OPTIONS': {'loaders': []},
}])
def test_backend_improperly_configured(self):
"""
Failing to initialize a backend keeps raising the original exception.
Regression test for #24265.
"""
with self.assertRaises(ImproperlyConfigured):
engines.all()
with self.assertRaises(ImproperlyConfigured):
engines.all()
@override_settings(TEMPLATES=[{
'BACKEND': 'django.template.backends.django.DjangoTemplates',
}, {
'BACKEND': 'django.template.backends.django.DjangoTemplates',
}])
def test_backend_names_must_be_unique(self):
with self.assertRaises(ImproperlyConfigured):
engines.all()
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