rebase changes

py-polars/tests/unit/operations/test_sort.py

@@ -195,11 +195,30 @@ def test_sort_by_exprs() -> None:
     assert out.to_list() == [1, -1, 2, -2]
 
 
-def test_arg_sort_nulls() -> None:
+@pytest.mark.parametrize(
+    ("sort_function", "expected"),
+    [
+        (lambda x: x, ([0, 1, 2, 3, 4], [3, 4, 0, 1, 2])),
+        (
+            lambda x: x.sort(descending=False, nulls_last=True),
+            ([0, 1, 2, 3, 4], [3, 4, 0, 1, 2]),
+        ),
+        (
+            lambda x: x.sort(descending=False, nulls_last=False),
+            ([2, 3, 4, 0, 1], [0, 1, 2, 3, 4]),
+        ),
+    ],
+)
+def test_arg_sort_nulls(
+    sort_function: Callable[[pl.Series], pl.Series],
+    expected: tuple[list[int], list[int]],
+) -> None:
     a = pl.Series("a", [1.0, 2.0, 3.0, None, None])
 
-    assert a.arg_sort(nulls_last=True).to_list() == [0, 1, 2, 3, 4]
-    assert a.arg_sort(nulls_last=False).to_list() == [3, 4, 0, 1, 2]
+    a = sort_function(a)
+
+    assert a.arg_sort(nulls_last=True).to_list() == expected[0]
+    assert a.arg_sort(nulls_last=False).to_list() == expected[1]
 
     res = a.to_frame().sort(by="a", nulls_last=False).to_series().to_list()
     assert res == [None, None, 1.0, 2.0, 3.0]
@@ -208,6 +227,7 @@ def test_arg_sort_nulls() -> None:
     assert res == [1.0, 2.0, 3.0, None, None]
 
 
+
 @pytest.mark.parametrize(
     ("nulls_last", "expected"),
     [