Add tests for issues closed in astroid 4.0

tests/functional/i/iterable_context.py

@@ -198,3 +198,10 @@ def __getattr__(self, attr):
 
 # Regression test for https://github.com/pylint-dev/pylint/issues/6372
 string_twos = "".join(str(*y) for _, *y in [[1, 2], [1, 2]])
+
+# Regression test for https://github.com/pylint-dev/pylint/issues/9729
+class Model:
+    field: list[int] | None = None
+
+    def method(self):
+        return [f + 1 for f in self.field] if self.field else None

tests/functional/n/no/no_member_exception_group.py

@@ -0,0 +1,8 @@
+"""Indirect tests that ExceptionGroup is inferred."""
+
+try:
+    ex_list = [ValueError("a"), ValueError("b"),  Exception("c")]
+    raise ExceptionGroup("exceptions!", ex_list)
+except* ValueError as exc:
+    assert exc.exceptions
+    assert exc.message

tests/functional/n/no/no_member_exception_group.rc

@@ -0,0 +1,2 @@
+[testoptions]
+min_pyver=3.11