code: def test_map_empty(request, index):
      if isinstance(index, MultiIndex):
          request.applymarker(
              pytest.mark.xfail(
                  reason="Initializing a Series from a MultiIndex is not supported"
              )
          )
  
      s = Series(index)
      result = s.map({})
  
      expected = Series(np.nan, index=s.index)
      tm.assert_series_equal(result, expected)
  
imports: from collections import Counter, defaultdict
  from decimal import Decimal
  import math
  import numpy
  import pytest
  import pandas
  from pandas import DataFrame, Index, MultiIndex, Series, bdate_range, date_range, isna, timedelta_range
  import pandas._testing
label_desc: Use image node_id 16 for calling a global function with example usage: test_map_empty(request, index) without return types