code: def test_whole_set_predicate(self):
      assert fn.wholeSetPredicate({"i"}) == {r"{'i'}"}
      assert fn.wholeSetPredicate({"donald"}) == {r"{'donald'}"}
      assert fn.wholeSetPredicate({"goofy"}) == {r"{'goofy'}"}
      assert fn.wholeSetPredicate({"cipciop"}) == {r"{'cipciop'}"}
  
imports: import unittest
  from dedupe import predicate_functions
  from dedupe.cpredicates import ngrams
label_desc: Use image node_id 25 for calling the TestPredicateFunctions obj's underlying member method code with example usage: obj.test_whole_set_predicate() without return types