Add test_agg_with_unhashable_name_colum_value (should fail)

Author: leonarduschen

pandas/tests/frame/apply/test_frame_apply.py

@@ -1147,6 +1147,22 @@ def test_demo(self):
         )
         tm.assert_frame_equal(result.reindex_like(expected), expected)
 
+    def test_agg_with_unhashable_name_column_value(self):
+        #GH 36212 - Column name is "name"
+        data = {'name': ['foo', 'bar']}
+        df = pd.DataFrame(data)
+
+        #result's name should be None
+        result = df.agg({'name': 'count'})
+        expected = pd.Series({'name':2})
+        tm.assert_series_equal(result, expected)
+
+        #Check if name is preserved when aggregating series instead
+        result = df['name'].agg({'name':'count'})
+        expected = pd.Series({'name':2}, name='name')
+        tm.assert_series_equal(result, expected)
+
+
     def test_agg_multiple_mixed_no_warning(self):
         # GH 20909
         mdf = pd.DataFrame(