text: from unittest import TestCase
  
  import numpy as np
  
  from scattertext.Scalers import percentile_alphabetical
  
  
  class TestPercentile_lexicographic(TestCase):
  	def test_percentile_lexicographic(self):
  		scores = [1, 1, 5, 18, 1, 3]
  		text = ['c', 'a', 'five', 'eighteen', 'b', 'three']
  
  		ranking = percentile_alphabetical(scores, text)
  		np.testing.assert_array_almost_equal(ranking, np.array([0.4, 0, 0.8, 1., 0.2, 0.6]))
  