code: def test_display_RasterTileViz(display, data):
      """Assert that show calls the mocked display function"""
      tiles_url = "https://a.tile.openstreetmap.org/{z}/{x}/{y}.png"
      viz = RasterTilesViz(tiles_url, access_token=TOKEN)
  
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 33 for calling a global function with example usage: test_display_RasterTileViz(display, data) without return types