Deprecate ``check_messages`` in favor of ``only_required_for_messages`` (#6196)

* Add TypeVars for ``BaseChecker`` subclasses and AST callbacks

Co-authored-by: Daniël van Noord <13665637+DanielNoord@users.noreply.github.com>
Co-authored-by: Pierre Sassoulas <pierre.sassoulas@gmail.com>

1 files changed, 15 insertions, 0 deletions

diff --git a/tests/checkers/unittest_utils.py b/tests/checkers/unittest_utils.py
index 1ac461141..178d5467b 100644
--- a/tests/checkers/unittest_utils.py
+++ b/tests/checkers/unittest_utils.py
@@ -473,3 +473,18 @@ def test_deprecation_is_inside_lambda() -> None:
     with pytest.warns(DeprecationWarning) as records:
         utils.is_inside_lambda(nodes.NodeNG())
         assert len(records) == 1
+
+
+def test_deprecation_check_messages() -> None:
+    with pytest.warns(DeprecationWarning) as records:
+
+        class Checker:  # pylint: disable=unused-variable
+            @utils.check_messages("my-message")
+            def visit_assname(self, node):
+                pass
+
+        assert len(records) == 1
+        assert (
+            records[0].message.args[0]
+            == "utils.check_messages will be removed in favour of calling utils.only_required_for_messages in pylint 3.0"
+        )