class_docstr: Test ROCAUC visualizer
class_docstr_tok: ["Test","ROCAUC","visualizer"]
docstr: Test ROCAUC with classifiers that have no scoring method
docstr_tok: ["Test","ROCAUC","with","classifiers","that","have","no","scoring","method"]
code: def test_no_scoring_function(self):
      """
      Test ROCAUC with classifiers that have no scoring method
      """
      visualizer = ROCAUC(FakeClassifier())
      with pytest.raises(ModelError):
          visualizer._get_y_scores(self.binary.X.train)
  
imports: import pytest
  import numpy
  import numpy.testing
  from unittest.mock import patch
  from tests.base import VisualTestCase
  from yellowbrick.classifier.rocauc import *
  from yellowbrick.exceptions import ModelError
  from yellowbrick.datasets import load_occupancy
  from sklearn.svm import LinearSVC, SVC
  from sklearn.naive_bayes import GaussianNB
  from sklearn.linear_model import LogisticRegression
  from sklearn.base import BaseEstimator, ClassifierMixin
  from sklearn.model_selection import train_test_split
  from sklearn.ensemble import RandomForestClassifier, AdaBoostClassifier
  from sklearn.preprocessing import MinMaxScaler
  from sklearn.pipeline import Pipeline
label_desc: Use image node_id 22 for calling the TestROCAUC obj's underlying member method code with example usage: obj.test_no_scoring_function() without return types