def test_multiple_hyps(self):
     pivot = get_pivot([{
         'a': 0.6,
         'x': 0.4
     }, {
         'b': 1.0
     }, {
         'c': 1.0,
         'z': 3.0
     }])
     self.assertEqual(pivot, ['a', 'b', 'z'])
 def test_single_hypothese(self):
     pivot = get_pivot([{'a': 1.0}, {'b': 1.0}, {'c': 1.0}])
     self.assertEqual(pivot, ['a', 'b', 'c'])
 def test_empty_cn(self):
     pivot = get_pivot([])
     self.assertEqual(pivot, [])