def test_position_distance(self):
altitude1 = 0
altitude2 = 32000
pos1 = Position.from_deg_min_sec_feet(
('N37 36. 26.00.', 'W122 22. 49.59.'), altitude1)
pos2 = Position.from_deg_min_sec_feet(
('N36 36. 26.00.', 'W122 22. 49.59.'), altitude2)
self.assertAlmostEqual(
pos1.distance(pos2),
sqrt((altitude2 * FEET_TO_METERS_CONSTANT)**2 +
LatLon(pos1.lat_lon).distance(LatLon(pos2.lat_lon))**2))
