```python
      self.assertDictEqual(utils.group_by_weekday(
                utils.get_data()[11]), 
                {
                     0: [24123],
                     1: [16564],
                     2: [25321],
                     3: [22969, 22999],
                     4: [6426],
                     5: [],
                     6: [],
                }
      )
```