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import astroid
from pylint.checkers import BaseChecker, DeprecatedMixin, utils
from pylint.interfaces import UNDEFINED, IAstroidChecker
from pylint.testutils import CheckerTestCase, Message
class _DeprecatedChecker(BaseChecker, DeprecatedMixin):
__implements__ = (IAstroidChecker,)
name = "deprecated"
msgs = {
"W1505": (
"Using deprecated method %s()",
"deprecated-method",
"The method is marked as deprecated and will be removed in "
"a future version of Python. Consider looking for an "
"alternative in the documentation.",
)
}
@utils.check_messages(
"deprecated-method",
)
def visit_call(self, node):
"""Visit a Call node."""
try:
for inferred in node.func.infer():
self.check_deprecated_method(node, inferred)
except astroid.InferenceError:
return
def deprecated_methods(self):
return {"deprecated_func", ".Deprecated.deprecated_method"}
class TestDeprecatedChecker(CheckerTestCase):
CHECKER_CLASS = _DeprecatedChecker
def test_deprecated_function(self):
# Tests detecting deprecated function
node = astroid.extract_node(
"""
def deprecated_func():
pass
deprecated_func()
"""
)
with self.assertAddsMessages(
Message(
msg_id="deprecated-method",
args=("deprecated_func",),
node=node,
confidence=UNDEFINED,
)
):
self.checker.visit_call(node)
def test_deprecated_method(self):
# Tests detecting deprecated method
node = astroid.extract_node(
"""
class Deprecated:
def deprecated_method():
pass
d = Deprecated()
d.deprecated_method()
"""
)
with self.assertAddsMessages(
Message(
msg_id="deprecated-method",
args=("deprecated_method",),
node=node,
confidence=UNDEFINED,
)
):
self.checker.visit_call(node)
def test_no_message(self):
# Tests not raising error when no deprecated functions/methods are present.
node = astroid.extract_node(
"""
class MyClass:
def mymethod():
pass
MyClass().mymethod()
def myfunc():
pass
myfunc()
"""
)
with self.assertNoMessages():
self.checker.visit_call(node)
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