def test_average_same(self, qty=1000):
for i in range(qty):
a = Bitstring()
b = a.copy()
c = Bitstring.average(a, b)
self.assertEqual(c.distance_to(a), 0)
self.assertEqual(c.distance_to(b), 0)
def test_average_random(self, qty=1000):
for i in range(qty):
a = Bitstring()
b = Bitstring()
c = Bitstring.average(a, b)
d0 = a.distance_to(b)
d1 = c.distance_to(a)
d2 = c.distance_to(b)
self.assertEqual(d1+d2, d0)
self.assertTrue(d1 < d0)
self.assertTrue(d2 < d0)
self.assertTrue(abs(d1-d2) <= 1)
