test(python): test lit series arithmetic order (pola-rs#7015)

josemasar · Feb 21, 2023 · f7a581f · f7a581f
1 parent e7f34cf
commit f7a581f
Showing 1 changed file with 8 additions and 0 deletions.
diff --git a/py-polars/tests/unit/test_arity.py b/py-polars/tests/unit/test_arity.py
@@ -32,3 +32,11 @@ def test_nested_when_then_and_wildcard_expansion_6284() -> None:
         "2": ["c", "d"],
         "result": ["a", "d"],
     }
+
+
+def test_expression_literal_series_order() -> None:
+    s = pl.Series([1, 2, 3])
+    df = pl.DataFrame({"a": [1, 2, 3]})
+
+    assert df.select(pl.col("a") + s).to_dict(False) == {"a": [2, 4, 6]}
+    assert df.select(pl.lit(s) + pl.col("a")).to_dict(False) == {"": [2, 4, 6]}