class_docstr: Test the JointPlot visualizer with histograms
class_docstr_tok: ["Test","the","JointPlot","visualizer","with","histograms"]
docstr: Test that xhax and yhax are available
docstr_tok: ["Test","that","xhax","and","yhax","are","available"]
code: def test_haxes_available(self):
      """
      Test that xhax and yhax are available
      """
      oz = JointPlot(hist=True)
      assert oz.xhax is not None
      assert oz.yhax is not None
  
imports: import sys
  import pytest
  import numpy
  from functools import partial
  from unittest.mock import patch, MagicMock
  from sklearn.datasets import make_classification, make_regression
  from tests.base import IS_WINDOWS_OR_CONDA, VisualTestCase
  from yellowbrick.exceptions import YellowbrickValueError
  from yellowbrick.features.jointplot import *
  from ..fixtures import Dataset
label_desc: Use image node_id 1 for calling the TestJointPlotHistogram obj's underlying member method code with example usage: obj.test_haxes_available() without return types