From 73cf244e8f26f4807080cd280300fc50306d1e4a Mon Sep 17 00:00:00 2001
From: Marco Gorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Mon, 2 Dec 2024 21:06:58 +0000
Subject: [PATCH] add tests

---
 tests/pickle_test.py | 23 +++++++++++++++++++++++
 1 file changed, 23 insertions(+)
 create mode 100644 tests/pickle_test.py

diff --git a/tests/pickle_test.py b/tests/pickle_test.py
new file mode 100644
index 000000000..78c0debf9
--- /dev/null
+++ b/tests/pickle_test.py
@@ -0,0 +1,23 @@
+from __future__ import annotations
+
+from dataclasses import asdict
+from dataclasses import dataclass
+from typing import Sequence
+
+import pandas as pd
+import polars as pl
+
+import narwhals.stable.v1 as nw
+
+
+def test_dataclass() -> None:
+    # https://github.com/narwhals-dev/narwhals/issues/1486
+    @dataclass
+    class Foo:
+        a: Sequence[int]
+
+    # dry-run to check that none of these error
+    asdict(Foo(pd.Series([1, 2, 3])))
+    asdict(Foo(pl.Series([1, 2, 3])))  # type: ignore[arg-type]
+    asdict(Foo(nw.from_native(pl.Series([1, 2, 3]), series_only=True)))  # type: ignore[arg-type]
+    asdict(Foo(nw.from_native(pd.Series([1, 2, 3]), series_only=True)))  # type: ignore[arg-type]