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from contextlib import contextmanager
from django.core.exceptions import FieldDoesNotExist, FieldError
from django.db.models.query_utils import InvalidQuery
from django.test import SimpleTestCase
from django.utils.deprecation import RemovedInDjango40Warning
class InvalidQueryTests(SimpleTestCase):
@contextmanager
def assert_warns(self):
msg = (
'The InvalidQuery exception class is deprecated. Use '
'FieldDoesNotExist or FieldError instead.'
)
with self.assertWarnsMessage(RemovedInDjango40Warning, msg):
yield
def test_type(self):
self.assertIsInstance(InvalidQuery(), InvalidQuery)
def test_isinstance(self):
for exception in (FieldError, FieldDoesNotExist):
with self.assert_warns(), self.subTest(exception.__name__):
self.assertIsInstance(exception(), InvalidQuery)
def test_issubclass(self):
for exception in (FieldError, FieldDoesNotExist, InvalidQuery):
with self.assert_warns(), self.subTest(exception.__name__):
self.assertIs(issubclass(exception, InvalidQuery), True)
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