TST: add test for apply/reconstruct_func (#51705)

Author: renatocmaciel

pandas/tests/apply/test_frame_apply_relabeling.py

@@ -95,3 +95,11 @@ def test_agg_namedtuple():
         index=pd.Index(["foo", "bar", "cat"]),
     )
     tm.assert_frame_equal(result, expected)
+
+
+def test_reconstruct_func():
+    # GH 28472, test to ensure reconstruct_func isn't moved;
+    # This method is used by other libraries (e.g. dask)
+    result = pd.core.apply.reconstruct_func("min")
+    expected = (False, "min", None, None)
+    tm.assert_equal(result, expected)