code: def test_latitude_whole_earth(self):
      latitudes = np.linspace(-89.0, 89.0, 100)
      lower, upper = latitude_bounds(latitudes)
      assert lower == MIN_ALLOWED_LATITUDE
      assert upper == MAX_ALLOWED_LATITUDE
  
imports: import unittest
  import numpy
  from ..bounds import latitude_bounds, longitude_bounds, merge_longitude_bounds, MAX_ALLOWED_LATITUDE, MIN_ALLOWED_LATITUDE, EPSILON
label_desc: Use image node_id 3 for calling the LatitudeBounds obj's underlying member method code with example usage: obj.test_latitude_whole_earth() without return types