code: def test_binary_classification_metrics_single_class(self, metric):
      y_true = np.array([0, 0, 0, 0, 0, 0])
      y_pred = np.array([0, 0, 0, 0, 0, 0])
      classes = [0, 1]
      with pytest.raises(ValueError):
          metric_to_func[metric](y_true, y_pred)
      assert isinstance(
          metric_to_func[metric](y_true, y_pred, classes), float
      )
  
file_path: responsible-ai-toolbox/erroranalysis/tests/test_metrics.py
imports: import logging
  import numpy
  import pytest
  from erroranalysis._internal.constants import Metrics, ModelTask, binary_classification_metrics, multiclass_classification_metrics, object_detection_metrics, regression_metrics
  from erroranalysis._internal.metrics import metric_to_func
label_desc: Use image node_id 2 for calling the TestMetrics obj's underlying member method code with example usage: obj.test_binary_classification_metrics_single_class(metric) without return types