def test_reset(self):
'''It should reset value to initial value'''
backoff = ExpBackoff(init=1.0, rate=2.0, cap=10, deviation=0.3)
backoff.inc()
backoff.reset()
self.assertEqual(1.0, backoff.value)
def test_inc(self):
'''It should increment to cap'''
backoff = ExpBackoff(init=1.0, rate=2.0, cap=10, deviation=0.3)
self.assertEqual(1.0, backoff.value)
self.assertEqual(2.0, backoff.inc())
self.assertEqual(4.0, backoff.inc())
self.assertEqual(8.0, backoff.inc())
self.assertAlmostEqual(10.0, backoff.inc(), delta=10 * 0.3)
self.assertAlmostEqual(10.0, backoff.inc(), delta=10 * 0.3)
def test_inc(self):
'''It should increment to cap'''
backoff = ExpBackoff(init=1.0, rate=2.0, cap=10, deviation=0.3)
self.assertEqual(1.0, backoff.value)
self.assertEqual(2.0, backoff.inc())
self.assertEqual(4.0, backoff.inc())
self.assertEqual(8.0, backoff.inc())
self.assertAlmostEqual(10.0, backoff.inc(), delta=10 * 0.3)
self.assertAlmostEqual(10.0, backoff.inc(), delta=10 * 0.3)
def __init__(self, *args, **kwargs):
'''Repeatedly attempt to establish a MongoDB connection.
Arguments are passed to :class:`pymongo.connection.Connection`.
'''
self._conn_args = args, kwargs
self._conn = None
Trier.__init__(self, self._try_connect, backoff=ExpBackoff(cap=600))
def test_reset(self):
'''It should reset value to initial value'''
backoff = ExpBackoff(init=1.0, rate=2.0, cap=10, deviation=0.3)
backoff.inc()
backoff.reset()
self.assertEqual(1.0, backoff.value)
