"""Return the top 10 asteroids farthest from the Sun"""
from mpc_client.query import Query
q = Query()
q.limit(10)
q.filter(aphelion_distance='is_not_null')
q.order('aphelion_distance', desc=True)
for asteroid in q:
print asteroid.designation, asteroid.orbit.aphelion_distance
"""Save a query to a local file for use later"""
from mpc_client.query import Query
q = Query()
q.limit(100)
q.save_to_file('first_100_asteroids.json')
def test_filter_parameters(self):
"""Adding a filter should append a string to parameters"""
q = Query()
q.filter(hello="World")
self.assertEqual(q._parameters['hello'], "World")
def test_limit(self):
"""A query with a limit filter should return exactly that many results
(we assume there are that many to return)"""
q = Query().limit(13)
q.run()
self.assertEqual(len(q._results), 13)
def test_change_order(self):
"""Overriding an order paramter by a descending order parameter should
remove the original parameter altogether"""
q = Query().order("something")
q.order("something_else", desc=True)
self.assertIsNone(q._parameters.get('order_by', None))
def test_default_order(self):
"""Adding an order parameter should update parameters"""
q = Query()
q.order('hello')
self.assertEqual(q._parameters['order_by'], "hello")
