code: def test_display_GraduatedCircleViz(display, data):
      """Assert that show calls the mocked display function"""
      viz = GraduatedCircleViz(
          data,
          color_property="Avg Medicare Payments",
          label_property="Avg Medicare Payments",
          radius_property="Avg Covered Charges",
          radius_function_type="match",
          color_function_type="match",
          radius_default=2,
          color_default="red",
          access_token=TOKEN,
      )
      viz.show()
      display.assert_called_once()
  
imports: import os
  import json
  import base64
  import random
  from mock import patch
  import pytest
  from mapboxgl.viz import *
  from mapboxgl.errors import TokenError, LegendError
  from mapboxgl.utils import create_color_stops, create_numeric_stops
  from matplotlib.pyplot import imread
label_desc: Use image node_id 19 for calling a global function with example usage: test_display_GraduatedCircleViz(display, data) without return types