class_docstr: Test FeatureImportances visualizer
docstr: With both feature_importances_ and coef_, one has priority
docstr_tok: ["With","both","feature_importances_","and","coef_",",","one","has","priority"]
code: def test_find_importances_param_priority(self):
      """
      With both feature_importances_ and coef_, one has priority
      """
      model = MockEstimator()
      model.make_importance_param("feature_importances_", "foo")
      model.make_importance_param("coef_", "bar")
      visualizer = FeatureImportances(model)
  
      assert hasattr(model, "feature_importances_")
      assert hasattr(model, "coef_")
  
      importances = visualizer._find_importances_param()
      assert importances == "foo"
  
imports: import pytest
  import numpy
  import numpy.testing
  import matplotlib.pyplot
  from yellowbrick.exceptions import NotFitted
  from yellowbrick.model_selection.importances import *
  from yellowbrick.datasets import load_occupancy, load_concrete
  from sklearn.datasets import load_iris
  from sklearn.ensemble import RandomForestClassifier
  from sklearn.ensemble import GradientBoostingClassifier
  from sklearn.base import BaseEstimator, ClassifierMixin
  from sklearn.linear_model import LogisticRegression, Lasso
  from sklearn.impute import SimpleImputer
  from sklearn.pipeline import Pipeline
  from unittest import mock
  from tests.base import VisualTestCase
label_desc: Use image node_id 17 for calling the TestFeatureImportancesVisualizer obj's underlying member method code with example usage: obj.test_find_importances_param_priority() without return types