docstr: Tests predicate returning False on first call.
docstr_tok: ["Tests","predicate","returning","False","on","first","call","."]
code: def test_wait_for_predicate_instant_false(self):
      """Tests predicate returning False on first call."""
      predicate_mock = mock.MagicMock(side_effect=[False])
      # 10 retry limit to avoid a near infinite loop on an error.
      train_utils.wait_for_predicate(predicate_mock, num_retries=10)
      self.assertEqual(predicate_mock.call_count, 1)
  
file_path: agents/tf_agents/train/utils/train_utils_test.py
imports: from absl.testing import parameterized
  from absl.testing.absltest import mock
  import numpy
  import reverb
  import tensorflow
  from tf_agents.system import system_multiprocessing
  from tf_agents.train.utils import test_utils
  from tf_agents.train.utils import train_utils
  from tf_agents.utils import test_utils
label_desc: Use image node_id 4 for calling the TrainUtilsTest obj's underlying member method code with example usage: obj.test_wait_for_predicate_instant_false() without return types