code: def test_does_not_divide_by_zero_with_no_count(self, device: str):
      accuracy = BooleanAccuracy()
      assert accuracy.get_metric() == pytest.approx(0.0)
  
file_path: allennlp/tests/training/metrics/boolean_accuracy_test.py
imports: from typing import Any, Dict, List, Tuple, Union
  import torch
  import pytest
  from allennlp.common.testing import AllenNlpTestCase, multi_device, global_distributed_metric, run_distributed_test
  from allennlp.training.metrics import BooleanAccuracy
label_desc: Use image node_id 5 for calling the BooleanAccuracyTest obj's underlying member method code with example usage: obj.test_does_not_divide_by_zero_with_no_count(device) without return types