def update_ratings(self, color):
points = {self.color: 1.0, self.opponent.color: 0.0}.get(color, 0.5)
mine = utils.loads(self.factory.db[self.name])
others = utils.loads(self.factory.db[self.opponent.name])
mine['rating'], others['rating'] = utils.elo(mine['rating'],
others['rating'],
points)
self.factory.db[self.name] = utils.dumps(mine)
self.factory.db[self.opponent.name] = utils.dumps(others)
def test_elo():
rating = 1613
for opponent, result in [(1609, 0.0),
(1477, 0.5),
(1388, 1.0),
(1586, 1.0),
(1720, 0.0)]:
rating = utils.elo(rating, opponent, result)[0]
assert round(rating) == 1603