code: def test_normalize_accents(unittest):
      df = pd.DataFrame(dict(foo=["naive cafe"]))
      data_id, column_type = "1", "cleaning"
      i = 0
      build_data_inst({data_id: df})
      cfg = {"col": "foo", "cleaners": ["normalize_accents"]}
      builder = ColumnBuilder(
          data_id, column_type, "Col{}".format(++i), cfg
      )
  
      def test(col):
          unittest.assertEqual(col.values[0], "naive cafe")
          return True
  
      verify_builder(builder, test)
  
imports: import pandas
  import pytest
  from dtale.column_builders import ColumnBuilder
  from tests.dtale import build_data_inst
  from tests.dtale.column_builders.test_column_builders import verify_builder
label_desc: Use image node_id 7 for calling a global function with example usage: test_normalize_accents(unittest) and returns: True