code: def test_cer_case_sensitive(self):
      refs = ["White House"]
      preds = ["white house"]
      # S = 2, D = 0, I = 0, N = 11, CER = 2 / 11
      char_error_rate = cer.compute(predictions=preds, references=refs)
      self.assertTrue(abs(char_error_rate - 0.1818181818) < 1e-6)
  
file_path: evaluate/metrics/cer/test_cer.py
imports: import unittest
  from cer import CER
label_desc: Use image node_id 1 for calling the TestCER obj's underlying member method code with example usage: obj.test_cer_case_sensitive() without return types