ai: apply changes for #1007 (2 review threads)

Addresses:
  - #4418426389 at tests/unit/test_fetches.py:458
  - #4418426396 at tests/unit/test_sea_result_set.py:530

Signed-off-by: peco-engineer-bot[bot] <peco-engineer-bot[bot]@users.noreply.github.com>

Author: peco-engineer-bot[bot]

tests/unit/test_fetches.py

@@ -534,6 +534,7 @@ def test_mixed_fetches_keep_order_and_rownumber(self):
         self.assertEqual(rs.rownumber, 10)
         self.assertIsNone(rs.fetchone())
 
+    @pytest.mark.skipif(pa is None, reason="PyArrow is not installed")
     def test_fetchone_then_fetchall_arrow_keeps_order(self):
         rs = self.make_columnar_result_set(10, arraysize=4)
         self.assertEqual(rs.fetchone()[0], 0)

tests/unit/test_sea_result_set.py

@@ -527,6 +527,7 @@ def test_json_fetchone_converts_in_batches(
         assert [r.col2 for r in rows] == list(range(100))
         assert m.call_count <= 100 // 10 + 2
 
+    @pytest.mark.skipif(pyarrow is None, reason="PyArrow is not installed")
     def test_json_mixed_fetches_keep_order_and_rownumber(
         self, mock_connection, mock_sea_client, execute_response
     ):
@@ -547,6 +548,7 @@ def test_json_mixed_fetches_keep_order_and_rownumber(
         assert rs.rownumber == 10
         assert rs.fetchone() is None
 
+    @pytest.mark.skipif(pyarrow is None, reason="PyArrow is not installed")
     def test_json_fetchone_then_fetchall_arrow_keeps_order(
         self, mock_connection, mock_sea_client, execute_response
     ):