test invalid dtype raises

pola-rs · Apr 19, 2024 · c65ffe4 · c65ffe4
1 parent fc35fba
commit c65ffe4
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/py-polars/tests/unit/datatypes/test_list.py b/py-polars/tests/unit/datatypes/test_list.py
@@ -885,3 +885,11 @@ def test_list_product_and_dtypes() -> None:
     ).select(pl.col("a").list.product()).to_dict(as_series=False) == {
         "a": [1, 1, 0, 1, 0]
     }
+
+
+def test_list_product_invalid_type_raises() -> None:
+    with pytest.raises(
+        pl.InvalidOperationError,
+        match="`list.product` operation not supported for dtype",
+    ):
+        pl.Series("a", [["a", "b"]]).list.product()