add unit-test

Author: anzor

.gitignore

@@ -20,6 +20,8 @@
 .vagrant
 .noseids
 .ipynb_checkpoints
+.ipynb
+.csv
 .tags
 .cache/
 .vscode/

pandas/tests/indexing/test_loc.py

@@ -3337,6 +3337,18 @@ def test_loc_reindexing_of_empty_index(self):
                     [[10, 10, 10], [20, 20, 20], [30, 30, 30]], columns=list("ABC")
                 ),
             ],
+            [
+                DataFrame([[1, 2, 3], [4, 5, 6], [7, 8, 9]], columns=list("ABC")),
+                slice(None),
+                Series(
+                    {
+                        "A": True,
+                        "C": False,
+                        "B": True,
+                    }
+                ),
+                DataFrame([[10, 10, 3], [20, 20, 6], [30, 30, 9]], columns=list("ABC")),
+            ],
         ],
     )
     def test_loc_set_series_to_multiple_columns(