code: def test_get_super_tile_min_max():
      tile_info = {
          "level": 0,
          "x_range": (-MERCATOR_CONST, MERCATOR_CONST),
          "y_range": (-MERCATOR_CONST, MERCATOR_CONST),
          "tile_size": 256,
          "span": (0, 1000),
      }
  
      agg = _get_super_tile_min_max(
          tile_info, mock_load_data_func, mock_rasterize_func
      )
  
      result = [np.nanmin(agg.data), np.nanmax(agg.data)]
  
      assert isinstance(result, list)
      assert len(result) == 2
      assert_is_numeric(result[0])
      assert_is_numeric(result[1])
  
file_path: datashader/datashader/tests/test_tiles.py
imports: from __future__ import annotations
  import datashader
  import datashader.transfer_functions
  from datashader.colors import viridis
  from datashader.tiles import render_tiles
  from datashader.tiles import gen_super_tiles
  from datashader.tiles import _get_super_tile_min_max
  from datashader.tiles import calculate_zoom_level_stats
  from datashader.tiles import MercatorTileDefinition
  import numpy
  import pandas
label_desc: Use image node_id 7 for calling a global function with example usage: test_get_super_tile_min_max() without return types