'Tests that the \'get_best_bid_ask\' method produces the
correct values depending upon validity of ticker.'

def test_get_best_bid_ask(self):

    (bid, ask) = self.price_handler.get_best_bid_ask('AMZN')
    self.assertEqual(PriceParser.display(bid, 5), 502.10001)
    self.assertEqual(PriceParser.display(ask, 5), 502.11999)
    (bid, ask) = self.price_handler.get_best_bid_ask('C')
