code: def test_weekday_tick_handler(unittest):
      unittest.assertEqual(
          chart_utils.weekday_tick_handler([1, 2, 3], "date|WD"),
          ["Tues", "Wed", "Thur"],
      )
      unittest.assertEqual(
          chart_utils.weekday_tick_handler([1, 2, 3], "foo"), [1, 2, 3]
      )
  
file_path: dtale/tests/dtale/test_charts.py
imports: import pandas
  import pytest
  import dtale.charts.utils
  from dtale.constants import CHART_JOINER_CHAR
label_desc: Use image node_id 5 for calling a global function with example usage: test_weekday_tick_handler(unittest) without return types