assert result after assignment

Author: matiaslindgren

pandas/tests/indexing/multiindex/test_multiindex.py

@@ -274,10 +274,21 @@ def test_multiindex_assign_aligns_as_implicit_tuple(self):
 
     def test_multiindex_assign_alignment_with_non_string_dtype(self):
         # GH 62518
-        meta = DataFrame(
-            columns=MultiIndex.from_arrays(
-                [["a", "a", "z", "z"], pd.Categorical([1, 2, 1, 2])]
-            ),
-            dtype=object,
+        columns = MultiIndex.from_arrays(
+            [["a", "a", "z", "z"], pd.Categorical([1, 2, 1, 2])]
         )
+
+        meta = DataFrame(columns=columns, dtype=object)
         meta["z"] = meta["z"].astype("int64")
+
+        result = DataFrame(
+            data={
+                ("a", 1): Series([], dtype=object),
+                ("a", 2): Series([], dtype=object),
+                ("z", 1): Series([], dtype="int64"),
+                ("z", 2): Series([], dtype="int64"),
+            },
+            columns=columns,
+        )
+
+        tm.assert_frame_equal(meta, result)