code: def test_expand_event_dict():
      expanded_events = expand_events(
          {"A": event_list, "B": event_list},
          left_expand="1min",
          right_expand="3min",
      )
      assert expanded_events == {
          "A": [
              (
                  pd.Timestamp("2017-1-1 19:59:00"),
                  pd.Timestamp("2017-1-1 20:11:59"),
              ),
              (
                  pd.Timestamp("2017-1-1 20:29:00"),
                  pd.Timestamp("2017-1-1 20:33:00"),
              ),
              (
                  pd.Timestamp("2017-1-1 20:59:00"),
                  pd.Timestamp("2017-1-1 21:09:59"),
              ),
          ],
          "B": [
              (
                  pd.Timestamp("2017-1-1 19:59:00"),
                  pd.Timestamp("2017-1-1 20:11:59"),
              ),
              (
                  pd.Timestamp("2017-1-1 20:29:00"),
                  pd.Timestamp("2017-1-1 20:33:00"),
              ),
              (
                  pd.Timestamp("2017-1-1 20:59:00"),
                  pd.Timestamp("2017-1-1 21:09:59"),
              ),
          ],
      }
  
file_path: adtk/tests/test_expand_events.py
imports: import pandas
  from adtk.data import expand_events
label_desc: Use image node_id 6 for calling a global function with example usage: test_expand_event_dict() without return types