text: import sys
  import os
  
  SCRIPT_DIR = os.path.dirname(os.path.abspath(__file__))
  sys.path.append(os.path.dirname(SCRIPT_DIR))
  
  from src.popoto.redis_db import POPOTO_REDIS_DB
  from src import popoto
  
  # MODELS WITH A SINGLE KEYFIELD
  
  class GeoModel(popoto.Model):
      key = popoto.KeyField()
      coordinates = popoto.GeoField()
  
  
  rome = GeoModel(key="Rome")
  rome.coordinates = popoto.GeoField.Coordinates(latitude=41.902782, longitude=12.496366)
  rome.save()
  
  assert rome in GeoModel.query.filter(coordinates=popoto.GeoField.Coordinates(latitude=41.902782, longitude=12.496366))
  assert rome in GeoModel.query.filter(coordinates_latitude=41.902782, coordinates_longitude=12.496366)
  
  vatican = GeoModel(key="Vatican")
  vatican.coordinates = popoto.GeoField.Coordinates(latitude=41.904755, longitude=12.454628)
  vatican.save()
  
  assert vatican in GeoModel.query.filter(coordinates=rome.coordinates, coordinates_radius=5, coordinates_radius_unit='km')
  assert rome in GeoModel.query.filter(coordinates=vatican.coordinates, coordinates_radius=5, coordinates_radius_unit='km')
  
  area51 = GeoModel.create(key="Area 51")
  area51.coordinates = (None, None)
  area51.save()
  
  for item in GeoModel.query.all():
      item.delete()
  