Add partial case

Author: phofl

pandas/tests/frame/indexing/test_setitem.py

@@ -708,7 +708,10 @@ def test_setitem_aligning_dict_with_index(self, vals):
         df = DataFrame({"a": [1, 2], "b": [3, 4], **vals})
         df.loc[:, "a"] = {1: 100, 0: 200}
         df.loc[:, "c"] = {0: 5, 1: 6}
-        expected = DataFrame({"a": [200, 100], "b": [3, 4], **vals, "c": [5, 6]})
+        df.loc[:, "e"] = {1: 5}
+        expected = DataFrame(
+            {"a": [200, 100], "b": [3, 4], **vals, "c": [5, 6], "e": [np.nan, 5]}
+        )
         tm.assert_frame_equal(df, expected)