code: def test_amazon_digital_music(self):
      random.seed(time.time())
      if random.random() > 0.8:
          ratings = digital_music.load_feedback()
          reviews = digital_music.load_review()
          self.assertEqual(len(ratings), 64706)
          self.assertEqual(len(reviews), 64705)
  
imports: import unittest
  import random
  import time
  from cornac.datasets import amazon_digital_music
label_desc: Use image node_id 1 for calling the TestAmazonDigitalMusic obj's underlying member method code with example usage: obj.test_amazon_digital_music() without return types