code: def test_failed_load_idempotent(self):
      expected_message = "you will never stop me"
  
      @lazy.lazy_load("bad")
      def bad():
          raise ValueError(expected_message)
  
      with self.assertRaisesRegex(ValueError, expected_message):
          bad.day
      with self.assertRaisesRegex(ValueError, expected_message):
          bad.day
  
file_path: tensorboard/tensorboard/lazy_test.py
imports: import unittest
  from tensorboard import lazy
label_desc: Use image node_id 5 for calling the LazyTest obj's underlying member method code with example usage: obj.test_failed_load_idempotent() without return types