docstr: Test GarbageCollector callback was called correct number of times (with predict entry point)
docstr_tok: ["Test","GarbageCollector","callback","was","called","correct","number","of","times","(","with","predict","entry","point",")"]
code: def test_garbage_collector_call_count_predict(self) -> None:
      """
      Test GarbageCollector callback was called correct number of times (with predict entry point)
      """
      input_dim = 2
      dataset_len = 10
      batch_size = 2
      expected_num_total_steps = dataset_len / batch_size
  
      my_unit = DummyPredictUnit(2)
      gc_callback_mock = MagicMock(spec=GarbageCollector)
  
      dataloader = generate_random_dataloader(
          dataset_len, input_dim, batch_size
      )
  
      predict(my_unit, dataloader, callbacks=[gc_callback_mock])
      self.assertEqual(gc_callback_mock.on_predict_start.call_count, 1)
      self.assertEqual(
          gc_callback_mock.on_predict_step_end.call_count,
          expected_num_total_steps,
      )
      self.assertEqual(gc_callback_mock.on_predict_end.call_count, 1)
  
imports: import gc
  import unittest
  from unittest import mock
  from unittest.mock import MagicMock
  from torchtnt.framework._test_utils import DummyEvalUnit, DummyFitUnit, DummyPredictUnit, DummyTrainUnit, generate_random_dataloader
  from torchtnt.framework.callbacks.garbage_collector import GarbageCollector
  from torchtnt.framework.evaluate import evaluate
  from torchtnt.framework.fit import fit
  from torchtnt.framework.predict import predict
  from torchtnt.framework.train import train
label_desc: Use image node_id 5 for calling the GarbageCollectorTest obj's underlying member method code with example usage: obj.test_garbage_collector_call_count_predict() without return types