diff --git a/python_eol/main.py b/python_eol/main.py
index 2116897..49ee3fe 100644
--- a/python_eol/main.py
+++ b/python_eol/main.py
@@ -140,5 +140,17 @@ def main() -> int:
     )
 
 
+def foo(*, param: bool) -> None:
+    # comment
+    """multi-line comment."""
+    a = 3 * 3
+    b = a
+    if param:
+        logging.info("b, a")
+    else:
+        c = a * b
+        logging.info(f"{c=} bar")
+
+
 if __name__ == "__main__":
     raise SystemExit(main())
diff --git a/tests/test_main.py b/tests/test_main.py
index 712ed84..34f64ac 100644
--- a/tests/test_main.py
+++ b/tests/test_main.py
@@ -7,7 +7,7 @@
 import pytest
 from freezegun import freeze_time
 
-from python_eol.main import _check_python_eol, _get_argparser, main
+from python_eol.main import _check_python_eol, _get_argparser, foo, main
 
 skip_py37 = pytest.mark.skipif(
     sys.version_info < (3, 8),
@@ -148,3 +148,8 @@ def test_version_in_dockerfile_close_to_eol(
         " (2023-06-27)"
     )
     assert caplog.record_tuples == [("python_eol.main", log_level, msg)]
+
+
+def test_foo() -> None:
+    foo(param=True)
+    assert True