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# Licensed under the GPL: https://www.gnu.org/licenses/old-licenses/gpl-2.0.html
# For details: https://github.com/PyCQA/pylint/blob/master/COPYING
import contextlib
import unittest
import astroid
from astroid import test_utils
from pylint.checkers import stdlib
from pylint.testutils import CheckerTestCase
@contextlib.contextmanager
def _add_transform(manager, node, transform, predicate=None):
manager.register_transform(node, transform, predicate)
try:
yield
finally:
manager.unregister_transform(node, transform, predicate)
class StdlibCheckerTest(CheckerTestCase):
CHECKER_CLASS = stdlib.StdlibChecker
def test_deprecated_no_qname_on_unexpected_nodes(self):
# Test that we don't crash on nodes which don't have
# a qname method. While this test might seem weird since
# it uses a transform, it's actually testing a crash that
# happened in production, but there was no way to retrieve
# the code for which this occurred (how an AssignAttr
# got to be the result of a function inference
# beats me..)
def infer_func(node, context=None):
new_node = astroid.AssignAttr()
new_node.parent = node
yield new_node
manager = astroid.MANAGER
transform = astroid.inference_tip(infer_func)
with _add_transform(manager, astroid.Name, transform):
node = test_utils.extract_node('''
call_something()
''')
with self.assertNoMessages():
self.checker.visit_call(node)
if __name__ == '__main__':
unittest.main()
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