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from django.core.exceptions import ImproperlyConfigured
from django.db.utils import load_backend
from django.test import SimpleTestCase
class TestLoadBackend(SimpleTestCase):
def test_load_backend_invalid_name(self):
msg = (
"'foo' isn't an available database backend.\n"
"Try using 'django.db.backends.XXX', where XXX is one of:\n"
" 'mysql', 'oracle', 'postgresql', 'sqlite3'"
)
with self.assertRaisesMessage(ImproperlyConfigured, msg) as cm:
load_backend('foo')
self.assertEqual(str(cm.exception.__cause__), "No module named 'foo'")
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