matching warning messege in test

Author: ShisuiUzumaki

pandas/tests/indexes/common.py

@@ -798,7 +798,11 @@ def test_inv(self, simple_index):
     def test_is_categorical_is_deprecated(self, simple_index):
         # GH50042
         idx = simple_index
-        with tm.assert_produces_warning(FutureWarning):
+        with tm.assert_produces_warning(
+            FutureWarning,
+            match="Index.is_categorical is deprecated."
+            "Use pandas.api.types.is_categorical_dtype instead",
+        ):
             idx.is_categorical()