code: def test_early_stop_invalid_min_delta(self) -> None:
      # Check for invalid min_delta
      with self.assertRaisesRegex(
          ValueError,
          "`min_delta` must be greater than or equal to 0. Got -1",
      ):
          EarlyStopChecker("min", 3, min_delta=-1)
  
imports: import unittest
  import torch
  from torchtnt.utils.early_stop_checker import EarlyStopChecker
label_desc: Use image node_id 16 for calling the EarlyStopCheckerTest obj's underlying member method code with example usage: obj.test_early_stop_invalid_min_delta() without return types