code: def test_all_classifiers_agree():
      # 10 classifiers that return 1
      predictions = np.ones((1, 10))
  
      assert np.all(BaseDS._all_classifier_agree(predictions))
  
imports: import unittest.mock
  from unittest.mock import Mock, MagicMock
  import numpy
  import pytest
  from sklearn.exceptions import NotFittedError
  from sklearn.neighbors import KNeighborsClassifier
  from deslib.base import BaseDS
  from deslib.util.dfp import frienemy_pruning_preprocessed
  from .conftest import create_base_classifier
label_desc: Use image node_id 1 for calling a global function with example usage: test_all_classifiers_agree() without return types