make sure new test is picked up by pytest

Author: Joseph Damiba

Diff for: packages/python/plotly/plotly/tests/test_core/test_px/test_px.py

@@ -235,7 +235,7 @@ def assert_orderings(days_order, days_check, times_order, times_check):
             assert_orderings(days, days, times, times)
 
 
-def check_permissive_defaults():
-    msg = "AttributeError: 'PxDefaults' object has no attribute 'should_not_work'"
+def test_permissive_defaults():
+    msg = "'PxDefaults' object has no attribute 'should_not_work'"
     with pytest.raises(AttributeError, match=msg):
         px.defaults.should_not_work = "test"