code: def test_early_stopping_on_delta():
      scores = iter([1.0, 2.0, 2.01, 3.0, 3.01, 3.02])
  
      trainer = Engine(do_nothing_update_fn)
  
      h = EarlyStopping(
          patience=2,
          min_delta=0.1,
          score_function=lambda _: next(scores),
          trainer=trainer,
      )
  
      assert not trainer.should_terminate
      h(None)  # counter == 0
      assert not trainer.should_terminate
      h(None)  # delta == 1.0; counter == 0
      assert not trainer.should_terminate
      h(None)  # delta == 0.01; counter == 1
      assert not trainer.should_terminate
      h(None)  # delta == 0.99; counter == 0
      assert not trainer.should_terminate
      h(None)  # delta == 0.01; counter == 1
      assert not trainer.should_terminate
      h(None)  # delta == 0.01; counter == 2
      assert trainer.should_terminate
  
imports: import os
  import pytest
  import torch
  import ignite.distributed
  from ignite.engine import Engine, Events
  from ignite.handlers import EarlyStopping
label_desc: Use image node_id 5 for calling a global function with example usage: test_early_stopping_on_delta() without return types