From 086d45a5451c750d6054be15d88fb7728e14490c Mon Sep 17 00:00:00 2001
From: Marco Gorelli <33491632+MarcoGorelli@users.noreply.github.com>
Date: Tue, 13 Aug 2024 19:29:02 +0100
Subject: [PATCH] correct min version

---
 narwhals/dataframe.py                    | 4 ++--
 narwhals/series.py                       | 6 +++---
 tests/series_only/arrow_c_stream_test.py | 1 +
 3 files changed, 6 insertions(+), 5 deletions(-)

diff --git a/narwhals/dataframe.py b/narwhals/dataframe.py
index f1c0c5bba..6f162dd15 100644
--- a/narwhals/dataframe.py
+++ b/narwhals/dataframe.py
@@ -265,10 +265,10 @@ def __arrow_c_stream__(self, requested_schema: object | None = None) -> object:
         try:
             import pyarrow as pa  # ignore-banned-import
         except ModuleNotFoundError as exc:  # pragma: no cover
-            msg = f"PyArrow>=14.0.0 is required for `__arrow_c_stream__` for object of type {type(native_frame)}"
+            msg = f"PyArrow>=14.0.0 is required for `DataFrame.__arrow_c_stream__` for object of type {type(native_frame)}"
             raise ModuleNotFoundError(msg) from exc
         if parse_version(pa.__version__) < (14, 0):  # pragma: no cover
-            msg = f"PyArrow>=14.0.0 is required for `__arrow_c_stream__` for object of type {type(native_frame)}"
+            msg = f"PyArrow>=14.0.0 is required for `DataFrame.__arrow_c_stream__` for object of type {type(native_frame)}"
             raise ModuleNotFoundError(msg) from None
         pa_table = self.to_arrow()
         return pa_table.__arrow_c_stream__(requested_schema=requested_schema)
diff --git a/narwhals/series.py b/narwhals/series.py
index bbe2bfb3d..42b33eab5 100644
--- a/narwhals/series.py
+++ b/narwhals/series.py
@@ -76,10 +76,10 @@ def __arrow_c_stream__(self, requested_schema: object | None = None) -> object:
         try:
             import pyarrow as pa  # ignore-banned-import
         except ModuleNotFoundError as exc:  # pragma: no cover
-            msg = f"PyArrow>=14.0.0 is required for `__arrow_c_stream__` for object of type {type(native_series)}"
+            msg = f"PyArrow>=16.0.0 is required for `Series.__arrow_c_stream__` for object of type {type(native_series)}"
             raise ModuleNotFoundError(msg) from exc
-        if parse_version(pa.__version__) < (14, 0):  # pragma: no cover
-            msg = f"PyArrow>=14.0.0 is required for `__arrow_c_stream__` for object of type {type(native_series)}"
+        if parse_version(pa.__version__) < (16, 0):  # pragma: no cover
+            msg = f"PyArrow>=16.0.0 is required for `Series.__arrow_c_stream__` for object of type {type(native_series)}"
             raise ModuleNotFoundError(msg)
         ca = pa.chunked_array([self.to_arrow()])
         return ca.__arrow_c_stream__(requested_schema=requested_schema)
diff --git a/tests/series_only/arrow_c_stream_test.py b/tests/series_only/arrow_c_stream_test.py
index 6b2ecf8a7..9964d7408 100644
--- a/tests/series_only/arrow_c_stream_test.py
+++ b/tests/series_only/arrow_c_stream_test.py
@@ -35,6 +35,7 @@ def test_arrow_c_stream_test_fallback(monkeypatch: pytest.MonkeyPatch) -> None:
     # Check that fallback to PyArrow works
     monkeypatch.delattr("polars.Series.__arrow_c_stream__")
     s = nw.from_native(pl.Series([1, 2, 3]).to_frame("a"), eager_only=True)["a"]
+    s.__arrow_c_stream__()
     result = pa.chunked_array(s)
     expected = pa.chunked_array([[1, 2, 3]])
     assert pc.all(pc.equal(result, expected)).as_py()