code: def test_group_filter_handler():
      assert (
          chart_utils.group_filter_handler("date", "2020-01-01", "D")[0]
          == "`date` == '20200101'"
      )
      assert (
          chart_utils.group_filter_handler("date", 1577854800000, "D")[
              0
          ]
          == "`date` == '20200101'"
      )
  
file_path: dtale/tests/dtale/charts/test_utils.py
imports: import mock
  import pytest
  import dtale.charts.utils
  from tests import ExitStack
  from tests.dtale.test_charts import build_col_def
label_desc: Use image node_id 6 for calling a global function with example usage: test_group_filter_handler() without return types